78 results about "Acid property" patented technology

The invention discloses property-transformation alumina carrier which contains titanium and silica agent and its relative preparing method. Said silica agent is added in the sol process of aluminum hydroxide to improve the specific surface, pore diameter and pore capacity of alumina; after the sol process, individually using acid agent and alkali agent to adjust the pH value of mixed paste solution for several times to make the attained alumina with more centralized pore distribution; the titanium agent is added after the sol process and before the aging process, to improve the surface acid property, surface acid amount and B acid amount of carrier. In addition, the surface of alumina is modified by titanium to decrease the interactive condition between active metal and carrier, which can apply the diffusion of active metal components in the catalyst. The property transformation of said invention can be used as catalysis material when processing oil, especially as the catalyst carrier of hydrogenation treatment and hydrogenation transformation.

Compounds and methods for sorbing organosulfur compounds from fluids are provided. Generally, compounds according to the present invention comprise mesoporous, nanocrystalline metal oxides. Preferred metal oxide compounds either exhibit soft Lewis acid properties or are impregnated with a material exhibiting soft Lewis acid properties. Methods according to the invention comprise contacting a fluid containing organosulfur contaminants with a mesoporous, nanocrystalline metal oxide. In a preferred embodiment, nanocrystalline metal oxide particles are formed into pellets (14) and placed inside a fuel filter housing (12) for removing organosulfur contaminants from a hydrocarbon fuel stream.

The invention discloses a preparation method of a hydrodemetallization catalyst. The method includes the following steps that 1, a physical pore-expanding agent I is soaked with an alkali-containing metal element solution I and hydrogenation active component soaking liquid I, a physical pore-expanding agent II is soaked with an alkali-containing metal element solution II and hydrogenation active component soaking liquid II, and the physical pore-expanding agent I and the physical pore-expanding agent II are dried and then soaked with an ammonium salt solution in a spraying mode for use; 2, the physical pore-expanding agent I and the physical pore-expanding agent II obtained in the step 1 are mixed with dry pseudo-boehmite gel powder, a chemical pore-expanding agent, an extrusion aid and a peptizing agent, the mixture is kneaded into plastic, strip extrusion is carried out, a formed material is subjected to heat treatment, the treated material is dried and roasted, and a modified alumina supporter is obtained; 3, the modified alumina supporter is soaked with hydrogenation active component soaking liquid III, and the catalyst is obtained through drying and roasting. The catalyst prepared through the method has a high active metal content at macropores and a low active metal content at micropores, the acid property at macropores is obviously improved, and the anti-carbon capacity of macropores is improved.

The invention discloses a gradient acid distributed ZSM-5 molecular sieve and a preparation method thereof. The ZSM-5 molecular sieve prepared by the method has a molar ratio of silicon oxide to alumina being 25-200, and simultaneously has weak acid, strong acid and super acid. The ZSM-5 molecular sieve having gradient acid distribution is obtained by supplementing an aluminium source to the ZSM-5 molecular sieve for a secondary synthesis. The ZSM-5 molecular sieve product obtained by the method has gradient acid properties, and has wide application prospects in the field of isomerization, alkylation, catalytic cracking and the like.

The invention relates to a lactobacillus caucasus JMCC0101 with an antioxidant function. The lactobacillus caucasus JMCC0101 is a probiotic separated and screened from a traditional fermented milk product in Dali in Yunnan Province in China; the bacterial strain is preserved at the General Microbiology Center of the China Committee for Culture Collection of Microorganisms with the preservation number of CGMCC No.11772. The lactobacillus caucasus JMCC0101 is finally screened through experiments such as sample collection, enrichment, separation, purification and identification in sequence. The lactobacillus caucasus JMCC0101 has very good acid and bile salt tolerant characteristic and antioxidant ability, good survival property, weak acid property and a fermentation flavor. The lactobacillus caucasus JMCC0101 is applied to preparation of probiotic powder or lactic acid bacteria beverage.

The invention relates to an Al2O3-ZrO2 multiple oxide and a supported hydrodesulfurization catalyst obtained by taking the multiple oxide as a carrier. The specific surface of the multiple oxide is between 200 and 270 m<2>/g, the pore volume of the multiple oxide is between 0.2 and 0.5 cm<3>/g, and the pore diameter of the multiple oxide is between 4 and 9 nanometers. The multiple oxide carrier can be obtained through assembling and synthesizing aluminum source and zirconium source by the hydrothermal precipitation method, coating method and the like; and the multiple oxide has large specific surface, appropriate pore canal structure, optimal acid property and redox property, and can be taken as an ideal carrier of diesel hydrodesulfurization catalyst. The invention also provides a deep hydrodesulfurization catalyst obtained by taking the multiple oxide as the carrier, and the catalyst shows better hydrodesulfurization activity than the common catalyst when used in hydrodesulfurization treatment of petroleum products.

The invention discloses a distillation hydrogenation refining catalyst whose main component is W/Mo/ Ni/SiO2/Al2O3, added with B agent. The invention also provides relative preparation that using alumina carrier which contains silicon and boron to obtain final product via two-stage immerge method, while the immerging solution contains three active components as tungsten, molybdenum and nickel. The invention has simple preparation, low cost, and adjustable physical-chemical property via agents, to obtain needed porous structure and surface acid property, to improve hydrogenation activity. The inventive catalyst is used in variable distillation hydrogenations, as diesel hydrogenation with high drying point.

The invention discloses aluminum hydroxide dry glue containing silicon and boron and a preparation method thereof. A silicon source in the method adopts an organic silicon source which is added after the aluminum oxide is gelatinized, and a boron source adopts boron-containing organic compound solution which is added after the silicon source is added and aged, so silicon and boron auxiliary agents are uniformly distributed on the aluminum oxide, in addition, the hole structure and the acid property of the aluminum oxide are regulated, and the aluminum hydroxide dry glue has the characteristics of large pore volume, large specific surface area and concentrated hole distribution and is particularly applicable to catalysis materials of hydrotreating catalysts.

The present invention belongs to the technical field of preparation of 2,6-dimethylnaphthalene, and particularly relates to a method for using CuSAPO-11 molecular sieve for preparation of 2,6-dimethylnaphthalene. The method solves the technical problems that high activity and high 2,6-DMN selectivity of a molecular sieve catalyst used in 2,6-dimethylnaphthalene preparation methods in the prior art are difficult to achieved at the same time and stability of the catalyst is poor. The catalyst used in the method is the silicon phosphate copper and aluminum molecular sieve CuSAPO-11, a copper salt is added into a process for synthesis of silicon phosphate aluminum molecular sieve SAPO-11 by use a hydrothermal synthetic method for further synthesis of the new type silicon phosphate copper and aluminum molecular sieve CuSAPO-11. The molecular sieve catalyst has suitable acid property, high specific surface area and large mesoporous pore size, so that the molecular sieve catalyst shows higher catalytic activity in the alkylation reaction of naphthalene, the molecular sieve catalyst has high 2,6-dimethylnaphthalene selectivity, and the ratio of 2,6-dimethylnaphthalene to 2,7-dimethylnaphthalene is high.

An extract from green coffee beans is disclosed which contains polyphenols and bioactive compounds e.g. Chlorogenic acids in a significantly higher concentration (70-80%) than in extracts of prior art methods (40-50%). The extract has greater ability to quench oxidative stress and destroy free radicals and offers health benefits due to its anti-obesity, anti-diabetic, antihypertensive, anti-tumor and anti-acid properties. The higher concentration of bioactive compounds has been achieved by use of polar solvents having polarity less than that of alcohols used for extraction. The use of such solvents of lower polarity such as n-Butyl alcohol, ethyl acetate or acetone results in extraction of enriched Chlorogenic acid fractions into the extract, leaving polar impurities behind in aqueous medium. The extract obtained has significantly higher content of polyphenols and chlorogenic acids ranging from 70-80% and a distinctive HPLC profile.

The invention discloses a fast-drying, low-temperature type environmental-protection epoxy resin bicomponent dry coating, which consists of two components, namely A and B, and is characterized by: 1. 10 to 15 minutes of initial curing time at the temperature of 25 DEG C and 1 hour of fully curing time; 2. good anti-seismic property, anti-shock property, anti-aging property, anti-compression property, and waterproof property, moisture-proof property, anti-acid property, and the like; 3. high bonding strength, less influence of seasonal climate on construction thereof, being capable of being prepared on the condition of low temperature of minus 20 to minus 80 DEG C, non-hardening property in winter and thus overcoming the difficulty of construction in winter; 4. 30 to 45 minutes of surface drying time, thereby providing a reasonable construction period for construction; and 5. good toughness, non-brittleness, and being capable of preventing deformation, distortion, and falling-off caused by various external factors. The invention can be widely applicable to industries such as construction and decoration, machinery, metal and ceramics, leather and wood, furniture and footwear, and the like.

The invention discloses a white tea water supplementing sleeping mask, which is prepared from the following raw materials in parts by weight: 15 to 30 parts of white tea extraction liquid, 2.5 to 3.5 parts of ice crystal forming agents, 2 to 3 parts of mycose, 0.1 to 0.5 part of sodium hyaluronate, 2 to 5 parts of propylene glycol, 0.5 to 1.5 parts of vitamin E and 50 to 70 parts of de-ionized water. The white tea water supplementing sleeping mask has the advantages that the preparation is simple; the raw materials are natural; the prepared white tea water supplementing sleeping mask has faint scent, weak acid property, mild property, no irritation, no toxic effects and has the effects of supplementing water, preserving moisture, resisting allergy and balancing the skin grease. The stress relieving effect can also be reached through the special fragrance of the white tea, so that people feel relaxed; the sleeping is promoted.

A hydrogenation catalyst with high denitrification performance, with silicon and phosphorus-containing alumina as the carrier, and metal oxides of VIB and/or VIII groups as active components; the pore volume of the carrier is 0.70-1.5mL/g , the specific surface area is 250~450m ² /g; the 20-30nm pore ratio of the catalyst carrier reaches more than 20%; the acid properties of the carrier surface are: the acid amount is 0.2-0.7mmol/g, and the B acid is 0.1-0.3mmol/g; the specific surface area of ​​the catalyst is 200- 400m ² /g, the pore volume is 0.4-1.0mL/g, and the proportion of 20-30nm pores reaches more than 20%. The invention also provides a preparation method of a hydrogenation catalyst with high denitrification performance.

The invention relates to a preparation method of 3, 3-diaminodiphenylsulfone, which comprises adding iron powder with solvent in weak acid property, to reduce 3, 3-dinitrodiphenylsulfone into 3, 3-diaminodiphenylsulfone. The inventive method is beneficial for reaction and the reaction is complete, the invention processes purification after the reaction to obtain high-purity white crystal, the mother liquor is deposited, depressurized and distilled to recover solvent for reuse. In the reaction, sulfolane solvent can be added into the reaction to shorten the reaction time to 2-6h, thereby improving reaction selectivity, and sulfolane can be circulated in the preparation while the loss is 5%, to improve solvent utilization and reduce cost.

The invention relates to a method for extracting eugenol in velvety lilac flower leaves, comprising the following steps of: firstly, cleaning and drying the velvety lilac flower leaves, sieving by a 40-mesh sieve after crushing the velvety lilac flower leaves by a crusher, and obtaining velvety lilac flower powder; secondly, putting the sieved velvety lilac flower powder into an extraction tank with the extraction temperature of 30-50 DEG C, the extraction pressure of 10-20 MPa, the carbon dioxide flow of 10-50L/h and the extraction time of 50-100min, and obtaining an extraction liquid A; and thirdly, obtaining an extraction liquid B by extracting the extraction liquid A by an NaOH solution 3 times, obtaining an extraction liquid C by extracting the extraction liquid B by ether 3 times after acidizing the extraction liquid B to show acid property on blue litmus paper by chlorhydric acid; drying by anhydrous sodium sulfate, and recovering the ether to obtain a light yellow oily liquid, i.e. the eugenol. An extraction solvent used in the preparation method has the advantages of wide sources, low cost, high extraction ratio, low cost, simple operation, short extraction time, high extraction efficiency and no solvent residues.

The invention discloses a method for producing attapulgite toothpaste against smoke spots, which has the following key points of the technical proposal: the ingredients is carried out the processes of proportioning, stirring at low speed, crushing and pulping, grinding, stirring at high speed, vacuum degassing and then is canned for obtaining the finished products of the attapulgite toothpaste against the smoke spots. The attapulgite toothpaste against the smoke spots is consisted of pasty attapulgite clay, sodium dodecyl sulfate, sodium monofluoro-phosphate, zinc citrate, methyl salicylate, potassium sorbate, mint oil and demin-water. The attapulgite toothpaste against the smoke spots is able to directly adsorb and clear away a plurality of offensive odor and tastes in mouth cavities, strengthen and regenerate tooth enamel on the surface of teeth, increase the anti-acid property of the teeth, prevent plague, restrain adhesion of pigments of the smoke spots, tea spots, etc., on the surface of the teeth and clear away mottles of the smoke spots, blot, mottled enamel, etc., settled on the surface of the teeth. The production method is applicable to producing the attapulgite toothpaste against the smoke spots, Chinese herbal toothpastes and other medicated toothpastes.

The invention relates to the technical field of traditional Chinese medicine extraction, and specifically relates to a method for separating and extracting rheinic acid and emodin from anthraquinone compounds in rheum officinale. The anthraquinone compounds in rheum officinale mainly comprise rheinic acid, emodin, aloe-emodin, chrysophanol, physcion, and glycoside of physcion. Rheinic acid and emodin are widely used in the medicine field and have different properties and pharmacological effects. On the basis that the acid properties of rheinic acid and emodin are different, an alkaline substance is used to extract total anthraquinone compounds from rheum officinale, then a pH-gradient method is adopted to separate and extract rheinic acid and emodin from the total anthraquinone compounds, and then the rheinic acid and emodin are purified.

The invention discloses a preparation method of an isomerization catalyst with an MTW type structural molecular sieve serving as a carrier. The preparation method comprises the following specific steps: firstly, performing partial templating agent removal treatment on templating agent-containing molecular sieve raw powder with an MTW structure in an inert atmosphere at 50 to 300 DEG C; then performing further templating agent removal treatment on the molecular sieve having the MTW structure and subjected to the partial templating agent removal in an oxygen atmosphere at 50 to 400 DEG C; carrying metal active ingredients on an obtained molecular sieve carrier, and performing drying and reduction to obtain the target catalyst. Effective regulation of the acid properties and pore properties of the catalyst is realized by controlling a removal mode of a templating agent in the molecular sieve carrrier. Compared with a catalyst prepared in the prior art, the catalyst prepared with the method disclosed by the invention is higher in isomerization selectivity and isomer yield in the normal paraffin isomerization reaction.

The invention discloses a boron-containing aluminum hydroxide solid elastomer and the preparation method thereof. In the method, a stable solution of boron-containing organic compounds is added to conventional aluminum hydroxide gel, and the mixture is aged, filtered, washed and dried to obtain boron-containing aluminum hydroxide solid elastomer. The boron-containing aluminum hydroxide solid elastomer of the invention is a carrier ingredient with excellent performance, can provide large pore volume and large specific surface area, possesses suitable pore structure and acid property, and is especially suitable for being used as the catalyst material required in catalysis and process of heavy hydrocarbon.

The invention discloses an application of using N-benzoyl-N-phenylhydroxylamine as a stabilizing agent in domestic waste incineration fly ash treatment. The N-benzoyl-N-phenylhydroxylamine is efficient, stable, cheap, and easy to get, and has the advantages of less amount, simple stabilizing treatment method, low cost and no secondary pollution for heavy metal in domestic waste incineration fly ash. A leaching concentration of the heavy metal in a fly ash stabilizing product accord with a provision about leaching toxicity of dangerous wastes, and has better anti-acid properties. The stability effect is obviously influenced when a pH is lower than 3. The invention provides a low-cost method in the domestic waste incineration fly ash treatment to remove an important barrier for limiting the cleaning development of a rubbish incineration enterprise. Not only can the large environmental benefits be obtained, but also the obvious social effects and the good social effects can be obtained.

A method for preparing a dialkyloxydianhyrohexitol (dimethylisosorbide) composition by etherification of dianhydrohexitol (isosorbide). The aim is to achieve a “clean” method that avoids the use of a methylation agent such as dimethyl sulfate or methyl chloride, which generates stoechiometric quantities of salts, or expensive dialkyl-carbonates, wherein only one of the two methyl groups participates in the preparation of mixed isosorbide ethers. The method involves using at least one O-alkylation agent and a catalyst including an acid or an acid salt, preferably a catalyst having Lewis or BrØnsted acid properties. A device for carrying out the method wherein the device includes a vaporization oven and a reaction oven is also described.