Deodorant and method of preparation and use thereof

Abstract

This invention relates to a deodorant, its preparation method, and its application, belonging to the field of deodorization technology. The invention provides a deodorant preparation method, specifically involving the following steps: a mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are orderly mixed to obtain a composite powder. This powder is then mixed with a sodium silicate aqueous solution, kneaded, pressed into shape, and cured to obtain a raw blank. The raw blank is then immersed in a composite treatment solution containing silica sol, a silane coupling agent, and nano-titanium dioxide. After removal, it is dried and heat-treated to obtain the deodorant. The deodorant prepared by this invention can be applied to kitchens, bathrooms, and shoe cabinets, exhibiting excellent deodorizing effects.

Description

Technical Field

[0001] This invention belongs to the field of deodorization technology, and relates to a deodorizing agent, its preparation method and application. Background Technology

[0002] In modern family life, kitchens, shoe cabinets, and bathrooms are the main places where odors are generated and accumulate. The presence of these odors not only affects the comfort and quality of life, but may also pose a potential threat to health. Therefore, it is necessary to use deodorizing products in these scenarios. By quickly neutralizing or eliminating odor molecules, air quality can be improved, creating a fresh and healthy home environment, thereby enhancing psychological comfort and hygiene.

[0003] Although there are many types of deodorizing products on the market, including physical adsorption, chemical neutralization, masking, and photocatalytic types, they still have limitations in practical applications. For example, physical adsorption products, such as porous materials like activated carbon and silica gel, rely on their large specific surface area to adsorb odor molecules through van der Waals forces. They are gentle and safe, but their adsorption capacity for low-concentration odors or specific polar molecules is limited, and they are easily saturated and need to be replaced regularly. Chemical neutralization products use acid-base reactions, oxidation-reduction reactions, or complexation reactions with odor molecules to achieve deodorization. They are fast-acting but may introduce new chemical substances, posing risks of corrosion or irritation. Masking products, such as fragrance sprays, cover up odors by releasing stronger fragrances but do not truly eliminate harmful molecules. Their effects are short-lived and may cause secondary pollution. Photocatalytic products can produce highly oxidizing active oxides under ultraviolet light, thereby degrading various organic odors and possessing self-cleaning potential. However, they are dependent on light conditions and have poor response to visible light, making them unsuitable for widespread use. Therefore, improving deodorizing products remains a continuous direction for researchers. Summary of the Invention

[0004] The purpose of this invention is to provide a deodorant, its preparation method, and its application. Using a mineral-based deodorizing carrier as a framework, it also incorporates metal compounds such as basic copper carbonate and zinc oxide. Finally, it is treated with a composite treatment liquid containing nano-titanium dioxide, achieving chemical catalytic oxidation and photocatalytic decomposition of odor molecules, thus synergistically enhancing the deodorizing effect. Furthermore, the deodorant also incorporates mesoporous silica loaded with hexadecylpyridine chloride to achieve slow-release antibacterial activity, further inhibiting microbial growth and solving the odor problem.

[0005] The objective of this invention can be achieved through the following technical solutions: A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0006] Further, step S1 specifically involves setting the mixer speed to 15-25 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 5-15 minutes, then sequentially adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide, mixing for 4-6 minutes after each addition, and finally adding mesoporous silica and mixing for 15-25 minutes to obtain the composite powder.

[0007] Furthermore, the composite powder, by weight, comprises 60-75 parts of mineral-based deodorizing carrier, 0.8-1.5 parts of anhydrous calcium chloride, 1-2 parts of magnesium stearate, 4-6 parts of calcium peroxide, 0.8-1.2 parts of ferrous sulfate, 1.5-3 parts of basic copper carbonate, 1-2.5 parts of zinc oxide, and 4-8 parts of mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide need to be pulverized through a 60-80 mesh sieve before mixing.

[0008] Furthermore, the mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 4-6 parts by weight of attapulgite and 3-5 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 14-16wt% dilute hydrochloric acid solution at a weight ratio of 1:2.5-3.5, stir at 80-90℃ for 4-5 hours, wash with water until the pH is 5-6, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 100-110℃, heat it to 360-400℃ at a rate of 4-6℃ / min and calcine it for 3-4 hours. After cooling, crush it through a 20-40 mesh sieve to obtain a mineral-based deodorizing carrier.

[0009] Furthermore, the mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Activate mesoporous silica with an average particle size of 5-10 μm at 115-125℃ for 2-3 h to obtain the substrate; Z2. Mix 0.8-1.2 parts by weight of hexadecylpyridine chloride and 1.5-2.5 parts by weight of 45-55 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.2-1.5 until homogeneous. Let stand at room temperature for 40-50 minutes, spray dry, and then pass through an 80-100 mesh sieve to obtain mesoporous silica.

[0010] Further, in step S2, the weight ratio of the composite powder to the sodium silicate aqueous solution is 1:0.08-0.12; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:2.5-3.5; the kneading is performed in a kneader at 30-40℃ and 30-50rpm for 30-40 minutes; the pressing pressure is 10-15MPa; and the curing is performed at a temperature of 35-45℃ and a relative humidity of 80-90% for 20-28 hours.

[0011] Further, step S3 specifically involves immersing the raw blank in the composite treatment solution for 10-20 minutes, then removing it, draining it, drying it at 80-90℃ for 1-2 hours, and then heat-treating it at 110-130℃ for 40-50 minutes.

[0012] Further, the composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano-titanium dioxide, and water in a weight ratio of 1-2:0.2-0.6:0.1-0.4:10.1-10.5; the silane coupling agent is methyltriethoxysilane or γ-aminopropyltriethoxysilane; the nano-titanium dioxide is anatase nano-titanium dioxide with an average particle size of 5-20 nm.

[0013] A deodorant prepared according to the above preparation method.

[0014] Furthermore, the deodorizer is applied in kitchens, bathrooms, and shoe cabinets.

[0015] The beneficial effects of this invention are: (1) This invention provides a deodorant with a mineral-based deodorizing carrier as the skeleton, and also introduces metal compounds such as basic copper carbonate and zinc oxide. Finally, it is treated with a composite treatment liquid containing nano-titanium dioxide, which realizes chemical catalytic oxidation and photocatalytic decomposition of odor molecules, and synergistically exerts the deodorizing effect. In addition, the deodorant also introduces mesoporous silica loaded with hexadecylpyridine chloride to achieve slow-release antibacterial effect, further inhibiting the growth of microorganisms and solving the odor problem.

[0016] (2) This invention provides a deodorant that, through an "orderly mixing" process, allows magnesium stearate and anhydrous calcium chloride to preferentially coat the mineral-based deodorizing carrier and isolate the subsequently added calcium peroxide and ferrous sulfate, thereby constructing a stable solid-state Fenton-like system. It generates highly oxidizing hydroxyl radicals to oxidize and decompose odor molecules. Basic copper carbonate and zinc oxide are also added to enhance the adsorption capacity of odor molecules. Finally, mesoporous silica loaded with hexadecylpyridine chloride is added to achieve a structure of first coating, then stabilization, and finally slow release, ensuring the stable mixing of internal active components and improving the stability of the material.

[0017] (3) This invention provides a deodorizer that differs from existing deodorizing products that mask odors with fragrance. It introduces acidic sites on the surface of a mineral-based deodorizing carrier through acid activation, followed by heat treatment to increase adsorption sites. Then, the mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, etc. are mixed in an orderly manner to obtain a composite powder. The composite powder is then mixed with sodium silicate aqueous solution, kneaded, pressed into shape, and cured to obtain a blank. The blank is treated with a composite treatment liquid. With silica sol as the bonding skeleton, silane coupling agent to provide hydrophobicity and interfacial bonding force, and nano titanium dioxide as surface catalytic active sites, the internal components are effectively locked and the product service life is extended. It can be applied to kitchens, bathrooms, and shoe cabinets and has a good deodorizing effect. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with embodiments, is provided below.

[0019] In all embodiments and comparative examples of this invention, attapulgite and diatomaceous earth were purchased from Lingshou County Hengshuo Mineral Products Co., Ltd.; mesoporous silica was purchased from Qinghe County Chaotai Metal Materials Co., Ltd.; silica sol was purchased from Jinan Huijinchuan Trading Co., Ltd.; and nano titanium dioxide was purchased from Zhongke Jinyan (Beijing) Technology Co., Ltd. Unless otherwise specified, other materials and reagents used in all embodiments and comparative examples of this invention can be obtained commercially. Example 1

[0020] A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0021] Specifically, step S1 involves setting the mixer speed to 15 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 5 minutes, then adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide in sequence, mixing for 4 minutes after each addition, and finally adding mesoporous silica and mixing for 15 minutes to obtain the composite powder.

[0022] The composite powder, by weight, comprises 60 parts mineral-based deodorizing carrier, 0.8 parts anhydrous calcium chloride, 1 part magnesium stearate, 4 parts calcium peroxide, 0.8 parts ferrous sulfate, 1.5 parts basic copper carbonate, 1 part zinc oxide, and 4 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide need to be pulverized through a 60-mesh sieve before mixing.

[0023] The mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 4 parts by weight of attapulgite and 3 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 14wt% dilute hydrochloric acid solution at a weight ratio of 1:2.5, stir at 80℃ for 4 hours, wash with water until the pH is 5, and filter by pressure to obtain a filter cake. Y3. After drying the filter cake at 100℃, heat it to 360℃ at a rate of 4℃ / min and calcine it for 3 hours. After cooling, crush it through a 20-mesh sieve to obtain a mineral-based deodorizing carrier.

[0024] The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Mesoporous silica with an average particle size of 5 μm was activated at 115 °C for 2 h to obtain the substrate; Z2. Mix 0.8 parts by weight of hexadecylpyridine chloride and 1.5 parts by weight of 45 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.2 until homogeneous. Let stand at room temperature for 40 minutes, spray dry, and then pass through an 80-mesh sieve to obtain mesoporous silica.

[0025] The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.08; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:2.5; the kneading is performed in a kneader at 30°C and 30 rpm for 30 minutes; the pressing pressure is 10 MPa; the curing is performed at 35°C and 80% relative humidity for 20 hours.

[0026] Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 10 minutes, then removing it, draining it, drying it at 80°C for 1 hour, and then heat-treating it at 110°C for 40 minutes.

[0027] The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 1:0.2:0.1:10.1; the silane coupling agent is γ-aminopropyltriethoxysilane; and the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 5 nm.

[0028] A deodorant prepared according to the above preparation method.

[0029] The deodorizer is used in kitchens, bathrooms, and shoe cabinets. Example 2

[0030] A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0031] Specifically, step S1 involves setting the mixer speed to 15 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 5 minutes, then adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide in sequence, mixing for 4 minutes after each addition, and finally adding mesoporous silica and mixing for 15 minutes to obtain the composite powder.

[0032] The composite powder, by weight, comprises 64 parts mineral-based deodorizing carrier, 1 part anhydrous calcium chloride, 1.2 parts magnesium stearate, 4.7 parts calcium peroxide, 0.9 parts ferrous sulfate, 1.9 parts basic copper carbonate, 1.3 parts zinc oxide, and 5.3 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide must be pulverized through a 60-mesh sieve before mixing.

[0033] The mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 4.5 parts by weight of attapulgite and 3.7 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 14wt% dilute hydrochloric acid solution at a weight ratio of 1:2.8, stir at 83℃ for 4.2h, wash with water until the pH is 5.3, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 102℃, it is heated to 370℃ at a rate of 4.5℃ / min and calcined for 3 hours. After cooling, it is crushed and passed through a 20-mesh sieve to obtain a mineral-based deodorizing carrier.

[0034] The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Mesoporous silica with an average particle size of 5 μm was activated at 118 °C for 2 h to obtain a substrate; Z2. Mix 0.9 parts by weight of hexadecylpyridine chloride and 1.8 parts by weight of 48 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.3 until homogeneous. Let stand at room temperature for 40 minutes, spray dry, and then pass through an 80-mesh sieve to obtain mesoporous silica.

[0035] The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.09; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:2.8; the kneading is performed in a kneader at 32°C and 35 rpm for 30 minutes; the pressing pressure is 10 MPa; the curing is performed at 37°C and 82% relative humidity for 22 hours.

[0036] Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 10 minutes, then removing it, draining it, drying it at 83°C for 1 hour, and then heat-treating it at 115°C for 40 minutes.

[0037] The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 1.2:0.3:0.2:10.2; the silane coupling agent is methyltriethoxysilane; and the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 8 nm.

[0038] A deodorant prepared according to the above preparation method.

[0039] The deodorizer is used in kitchens, bathrooms, and shoe cabinets. Example 3

[0040] A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0041] Specifically, step S1 involves setting the mixer speed to 20 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 10 minutes, then adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide in sequence, mixing for 5 minutes after each addition, and finally adding mesoporous silica and mixing for 20 minutes to obtain the composite powder.

[0042] The composite powder, by weight, comprises 67.5 parts mineral-based deodorizing carrier, 1.15 parts anhydrous calcium chloride, 1.5 parts magnesium stearate, 5 parts calcium peroxide, 1 part ferrous sulfate, 2.25 parts basic copper carbonate, 1.75 parts zinc oxide, and 6 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide must be pulverized through a 70-mesh sieve before mixing.

[0043] The mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 5 parts by weight of attapulgite and 4 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 15wt% dilute hydrochloric acid solution at a weight ratio of 1:3, stir at 85℃ for 4.5h, wash with water until the pH is 5.5, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 105℃, it is heated to 380℃ at a rate of 5℃ / min and calcined for 3.5h. After cooling, it is crushed and passed through a 30-mesh sieve to obtain a mineral-based deodorizing carrier.

[0044] The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Mesoporous silica with an average particle size of 8 μm was activated at 120 °C for 2.5 h to obtain the substrate; Z2. Mix 1 part by weight of hexadecylpyridine chloride and 2 parts by weight of 50 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.35 until homogeneous. Let stand at room temperature for 45 minutes, spray dry, and then pass through a 90-mesh sieve to obtain mesoporous silica.

[0045] The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.1; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:3; the kneading is performed in a kneader at 35°C and 40 rpm for 35 minutes; the pressing pressure is 12 MPa; the curing is performed at 40°C and 85% relative humidity for 24 hours.

[0046] Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 15 minutes, then removing it, draining it, drying it at 85°C for 1.5 hours, and then heat-treating it at 120°C for 45 minutes.

[0047] The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 1.5:0.4:0.25:10.3; the silane coupling agent is γ-aminopropyltriethoxysilane; and the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 12 nm.

[0048] A deodorant prepared according to the above preparation method.

[0049] The deodorizer is used in kitchens, bathrooms, and shoe cabinets. Example 4

[0050] A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0051] Specifically, step S1 involves setting the mixer speed to 25 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 15 minutes, then adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide in sequence, mixing for 6 minutes after each addition, and finally adding mesoporous silica and mixing for 25 minutes to obtain the composite powder.

[0052] The composite powder, by weight, comprises 71 parts mineral-based deodorizing carrier, 1.3 parts anhydrous calcium chloride, 1.8 parts magnesium stearate, 5.2 parts calcium peroxide, 1.1 parts ferrous sulfate, 2.5 parts basic copper carbonate, 2.1 parts zinc oxide, and 7.1 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide must be pulverized through an 80-mesh sieve before mixing.

[0053] The mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 5.3 parts by weight of attapulgite and 4.6 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 16wt% dilute hydrochloric acid solution at a weight ratio of 1:3.2, stir at 87℃ for 5 hours, wash with water until the pH is 5.7, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 108℃, it is heated to 390℃ at a rate of 5.5℃ / min and calcined for 4 hours. After cooling, it is crushed and passed through a 40-mesh sieve to obtain a mineral-based deodorizing carrier.

[0054] The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Mesoporous silica with an average particle size of 10 μm was activated at 122 °C for 3 h to obtain a substrate; Z2. Mix 1.1 parts by weight of hexadecylpyridine chloride and 2.3 parts by weight of 53 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.4, let stand at room temperature for 50 minutes, spray dry, and pass through a 100-mesh sieve to obtain mesoporous silica.

[0055] The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.11; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:3.2; the kneading is performed in a kneader at 37°C and 45 rpm for 40 minutes; the pressing pressure is 15 MPa; the curing is performed at 42°C and 87% relative humidity for 26 hours.

[0056] Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 20 minutes, then removing it, draining it, drying it at 87°C for 2 hours, and then heat-treating it at 125°C for 50 minutes.

[0057] The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 1.7:0.5:0.33:10.4; the silane coupling agent is methyltriethoxysilane; and the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 15 nm.

[0058] A deodorant prepared according to the above preparation method.

[0059] The deodorizer is used in kitchens, bathrooms, and shoe cabinets. Example 5

[0060] A method for preparing a deodorant, the preparation of which includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

[0061] Specifically, step S1 involves setting the mixer speed to 25 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 15 minutes, then adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide in sequence, mixing for 6 minutes after each addition, and finally adding mesoporous silica and mixing for 25 minutes to obtain the composite powder.

[0062] The composite powder, by weight, comprises 75 parts mineral-based deodorizing carrier, 1.5 parts anhydrous calcium chloride, 2 parts magnesium stearate, 6 parts calcium peroxide, 1.2 parts ferrous sulfate, 3 parts basic copper carbonate, 2.5 parts zinc oxide, and 8 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide must be pulverized through an 80-mesh sieve before mixing.

[0063] The mineral-based deodorizing carrier is obtained by acid activation and calcination of an attapulgite and diatomaceous earth composite. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 6 parts by weight of attapulgite and 5 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 16wt% dilute hydrochloric acid solution at a weight ratio of 1:3.5, stir at 90℃ for 5 hours, wash with water until the pH is 6, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 110℃, it is heated to 400℃ at a rate of 6℃ / min and calcined for 4 hours. After cooling, it is crushed and passed through a 40-mesh sieve to obtain a mineral-based deodorizing carrier.

[0064] The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Mesoporous silica with an average particle size of 10 μm was activated at 125 °C for 3 h to obtain a substrate; Z2. Mix 1.2 parts by weight of hexadecylpyridine chloride and 2.5 parts by weight of 55 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.5 until homogeneous. Let stand at room temperature for 50 minutes, spray dry, and then pass through a 100-mesh sieve to obtain mesoporous silica.

[0065] The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.12; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:3.5; the kneading is performed in a kneader at 40°C and 50 rpm for 40 minutes; the pressing pressure is 15 MPa; the curing is performed at 45°C and 90% relative humidity for 28 hours.

[0066] Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 20 minutes, then removing it, draining it, drying it at 90°C for 2 hours, and then heat-treating it at 130°C for 50 minutes.

[0067] The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 2:0.6:0.4:10.5; the silane coupling agent is γ-aminopropyltriethoxysilane; and the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 20 nm.

[0068] A deodorant prepared according to the above preparation method.

[0069] The deodorizer is used in kitchens, bathrooms, and shoe cabinets.

[0070] Comparative Example 1 Based on Example 3, keeping other conditions unchanged, step S1 is modified. Specifically, the mixer speed is set to 20 rpm, and mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are directly added and mixed for 50 min to obtain composite powder.

[0071] Comparative Example 2 Based on Example 3, keeping other conditions unchanged, step S1 is modified. Specifically, the mixer speed is set to 20 rpm. First, the mineral-based deodorizing carrier is added and stirred for 10 min. Then, calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide are added in sequence. Each addition requires 5 min of mixing. Finally, mesoporous silica is added and mixed for 20 min to obtain the composite powder.

[0072] Comparative Example 3 Based on Example 3, keeping other conditions unchanged, step S1 is modified as follows: the mixer speed is set to 20 rpm, mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate are added and mixed for 10 min, calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide are added and mixed for 20 min, and finally mesoporous silica is added and mixed for 20 min to obtain composite powder.

[0073] Comparative Example 4 Based on Example 3, keeping other conditions unchanged, step S1 is modified. Specifically, the mixer speed is set to 20 rpm. First, mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate are added and mixed for 10 min. Then, calcium peroxide and ferrous sulfate are added in sequence, and each addition is mixed for 10 min. Finally, mesoporous silica is added and mixed for 20 min to obtain composite powder.

[0074] Comparative Example 5 Based on Example 3, keeping other conditions unchanged, step S1 is modified. Specifically, the mixer speed is set to 20 rpm. First, mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate are added and mixed for 10 minutes. Then, basic copper carbonate and zinc oxide are added in sequence, and each addition is mixed for 10 minutes. Finally, mesoporous silica is added and mixed for 20 minutes to obtain composite powder.

[0075] Comparative Example 6 Based on Example 3, keeping other conditions unchanged, step S1 is modified. Specifically, the mixer speed is set to 20 rpm. First, mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate are added and mixed for 10 min. Then, calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide are added in sequence. Each addition requires 5 min of mixing, and mixing continues for 20 min to obtain composite powder.

[0076] Comparative Example 7 Based on Example 3, keeping other conditions unchanged, equal parts by weight of nano-titanium dioxide were used to replace calcium peroxide and ferrous sulfate. The nano-titanium dioxide was anatase-type nano-titanium dioxide with an average particle size of 12 nm.

[0077] Comparative Example 8 Based on Example 3, keeping other conditions unchanged, the acid activation treatment in the preparation process of the mineral-based deodorizing carrier was removed.

[0078] Comparative Example 9 Based on Example 3, keeping other conditions unchanged, the calcination treatment in the preparation process of the mineral-based deodorizing carrier was removed.

[0079] Comparative Example 10 Based on Example 3, keeping other conditions unchanged, the mesoporous silica was not subjected to loading treatment.

[0080] Effect test 1. Using the deodorants prepared in Examples 1-5 and Comparative Examples 1-10 as samples, the deodorizing effect of the samples was tested. The test method was as follows: In 2m 3 Both the sample group air test chamber and the same blank control group test chamber were filled with 2.6 mg / cm³ of air. 3 Ammonia, 2.3 mg / cm³ 3 Hydrogen sulfide gas, 0.8 mg / cm³ 3 Formaldehyde gas was mixed with other odorous gases. In the sample test chamber, 250g of the sample was placed in an open glass container. In the blank control test chamber, the same open glass container was placed empty. After 24 hours, the concentration of each gas in each test chamber was measured using a gas concentration detector. Each sample group and blank control group were tested three times, and the average value was taken. The removal rate was calculated using the following formula: Removal rate (%) = (Gas concentration of blank control group after 24 h - Gas concentration of sample group after 24 h) / Gas concentration of blank control group after 24 h × 100%; The results are recorded in Table 1 below;

[0081] 2. Using the deodorants prepared in Examples 1-5 as samples, the antibacterial effect of the samples was tested. The test method was as follows: The sample was pressed into a disc with a diameter of 6 mm and sterilized with ultraviolet light for 2 hours. Then, 1 mL of a 10% concentration was taken from each disc. 5 Staphylococcus aureus and Escherichia coli at CFU / mL were dropped onto their respective culture media, spread evenly, and allowed to stand for 10 minutes to allow the bacterial solution to spread completely. The growth of the bacteria was observed and the diameter of the inhibition zone was measured after 24 hours. Each group of samples was tested in triplicate, and the average results were recorded as shown in Table 2 below.

[0082]

[0083] As shown in Table 1, the deodorants prepared in Examples 1-5 of this invention also have good inhibitory effects on Staphylococcus aureus and Escherichia coli.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for preparing a deodorant, characterized in that, The preparation of the deodorant includes the following steps: S1. The mineral-based deodorizing carrier, anhydrous calcium chloride, magnesium stearate, calcium peroxide, ferrous sulfate, basic copper carbonate, zinc oxide, and mesoporous silica are mixed in an orderly manner to obtain a composite powder. S2. Mix the composite powder and sodium silicate solution, knead, press into shape, and cure to obtain a raw blank. S3. Immerse the raw blank in a composite treatment solution containing silica sol, silane coupling agent and nano titanium dioxide, remove it, dry it and heat treat it to obtain the deodorant.

2. The method for preparing the deodorant according to claim 1, characterized in that, Specifically, step S1 involves setting the mixer speed to 15-25 rpm, first adding the mineral-based deodorizing carrier, anhydrous calcium chloride, and magnesium stearate and mixing for 5-15 minutes, then sequentially adding calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide, mixing for 4-6 minutes after each addition, and finally adding mesoporous silica and mixing for 15-25 minutes to obtain the composite powder.

3. The method for preparing the deodorant according to claim 1, characterized in that, The composite powder, by weight, comprises 60-75 parts mineral-based deodorizing carrier, 0.8-1.5 parts anhydrous calcium chloride, 1-2 parts magnesium stearate, 4-6 parts calcium peroxide, 0.8-1.2 parts ferrous sulfate, 1.5-3 parts basic copper carbonate, 1-2.5 parts zinc oxide, and 4-8 parts mesoporous silica; the calcium peroxide, ferrous sulfate, basic copper carbonate, and zinc oxide need to be pulverized through a 60-80 mesh sieve before mixing.

4. The method for preparing the deodorant according to claim 1, characterized in that, The mineral-based deodorizing carrier is a composite of attapulgite and diatomaceous earth that has been acid-activated and thermally activated. The preparation of the mineral-based deodorizing carrier includes the following steps: Y1. Mix 4-6 parts by weight of attapulgite and 3-5 parts by weight of diatomaceous earth, then crush them to obtain composite mineral powder. Y2. Mix the composite mineral powder and a 14-16wt% dilute hydrochloric acid solution at a weight ratio of 1:2.5-3.5, stir at 80-90℃ for 4-5 hours, wash with water until the pH is 5-6, and filter by pressure to obtain the filter cake. Y3. After drying the filter cake at 100-110℃, heat it to 360-400℃ at a rate of 4-6℃ / min and calcine it for 3-4 hours. After cooling, crush it through a 20-40 mesh sieve to obtain a mineral-based deodorizing carrier.

5. The method for preparing the deodorant according to claim 1, characterized in that, The mesoporous silica is mesoporous silica supported on hexadecylpyridine chloride, and the preparation of the mesoporous silica includes the following steps: Z1. Activate mesoporous silica with an average particle size of 5-10 μm at 115-125℃ for 2-3 h to obtain the substrate; Z2. Mix 0.8-1.2 parts by weight of hexadecylpyridine chloride and 1.5-2.5 parts by weight of 45-55 wt% ethanol solution, and stir until completely transparent to obtain a hexadecylpyridine chloride solution. Z3. Mix the substrate and hexadecylpyridine chloride solution at a weight ratio of 1:1.2-1.5 until homogeneous. Let stand at room temperature for 40-50 minutes, spray dry, and then pass through an 80-100 mesh sieve to obtain mesoporous silica.

6. The method for preparing the deodorant according to claim 1, characterized in that, The weight ratio of the composite powder and the sodium silicate aqueous solution in step S2 is 1:0.08-0.12; the sodium silicate aqueous solution is obtained by mixing powdered sodium silicate and water at a weight ratio of 1:2.5-3.5; the kneading is performed in a kneader at 30-40℃ and 30-50rpm for 30-40 minutes; the pressing pressure is 10-15MPa; the curing is performed at a temperature of 35-45℃ and a relative humidity of 80-90% for 20-28 hours.

7. The method for preparing the deodorant according to claim 1, characterized in that, Specifically, step S3 involves immersing the raw blank in the composite treatment solution for 10-20 minutes, then removing it, draining it, drying it at 80-90℃ for 1-2 hours, and then heat-treating it at 110-130℃ for 40-50 minutes.

8. The method for preparing the deodorant according to claim 1, characterized in that, The composite treatment solution in step S3 is obtained by mixing silica sol, silane coupling agent, nano titanium dioxide, and water in a weight ratio of 1-2:0.2-0.6:0.1-0.4:10.1-10.5; the silane coupling agent is methyltriethoxysilane or γ-aminopropyltriethoxysilane; the nano titanium dioxide is anatase nano titanium dioxide with an average particle size of 5-20 nm.

9. A deodorant prepared by the method according to any one of claims 1-8.

10. An application of the deodorant according to claim 9, characterized in that, The deodorizer is used in kitchens, bathrooms, and shoe cabinets.

Images