34results about How to "Help industrial production" patented technology

The invention relates to a method for making rice steamed sponge cakes through synergistic fermentation of fresh fermented glutinous rice and yeast and a processed product of the rice steamed sponge cakes. The method comprises the following steps that firstly, rice pulp is subjected to oxygenation fermentation by using the fresh fermented glutinous rice to obtain fresh-fermented-glutinous-rice fermented rice milk; secondly, the yeast is added into the fresh-fermented-glutinous-rice fermented rice milk for synergistic fermentation; finally, steaming and aging are conducted to obtain the rice steamed sponge cakes. The rice steamed sponge cakes are made by means of the method of step-by-step synergistic fermentation of the fresh fermented glutinous rice and the yeast, the fresh fermented glutinous rice and the yeast synergistically cooperate with each other, the quality of the rice steamed sponge cakes is effectively optimized, the product can be soft in texture, good in elasticity and toughness, cool and smooth in taste and rich in sour and sweet flavor, the fermentation time of the product can be effectively shortened, the production cycle is shortened, and industrial production isfacilitated.

The invention provides manipulator automatic bending equipment. The equipment is applied to a bending machine, the bending machine is provided with a base support, a pushing mechanical arm and a discharging channel, the pushing mechanical arm and the discharging channel are arranged at the two ends of the base support, and the mechanical arm automatic bending equipment comprises a rack arranged atthe side edge of the base support and provided with a through groove, a first driving source arranged on the rack and used for providing power, a movable arm movably arranged in the through groove, an upper die base, a positioning pre-pressing part and a lower die base. The first driving source can drive the movable arm to vertically move; the upper die base is arranged at the end, extending outof the through groove, of the movable arm; the bottom of the upper die base is connected with a bending stamping head; the positioning pre-pressing part is arranged at one end of a bending stamping head in a sliding manner and used for bending and positioning a workpiece; the lower die base is arranged on a base support and corresponds to the upper die base in position; and a bending part of the workpiece is accurately positioned through the positioning pre-pressing part, and the machining efficiency is improved while the machining precision is improved.

The invention relates to a catalyst preparation technology, and aims to provide a preparation method of a catalyst for preparation of FDCA (2,5-furandicarboxylic acid) through catalytic oxidation of HMF (5-hydroxymethylfurfural), and application of the catalyst. The application method comprises the following steps: adding HMF and potassium ferrate into a reaction container; adding deionized water,NaOH and K2HPO4 into a flask, and reacting under the condition of 25 DEG C for 15 minutes, wherein after the reaction, the solution is pasty; filtering to obtain filtrate, and adding concentrated hydrochloric acid into the filtrate dropwise until a large amount of white precipitate is generated; and filtering, putting solid substances into a drying box at the temperature of 50 DEG C and drying for 24 hours to obtain a white product, namely the 2,5-furandicarboxylic acid. The catalytic cost of the potassium ferrate is lower relative to that of noble metal, and the reduction product of the potassium ferrate after reaction is ferric oxide hydrate which is environmentally friendly, is a green product and avoids pollution. Through control of the alkaline condition of the system and the use amount of the buffer solution K2HPO4, the stability of the potassium ferrate can be improved and efficient preparation is realized.

A method for preparing a graphene-based LiFePO4 / C composite material is disclosed to solve the problem that both the conductivity and the rate capability of the existing lithium iron phosphate positive electrode materials are poor. The keys of the method are: 1) preparing an iron salt solution having graphene oxide dissolved therein; 2) preparing an iron phosphate / graphene oxide precursor; 3) preparing the graphene-based LiFePO4 / C composite materials. The method's beneficial effects lie in: the technological process is simple and easy to control, the obtained graphene-based LiFePO4 / C composite material, having high specific capacity, good cycle performance and excellent rate capability, is especially suitable for power battery application field.

The invention relates to technologies of polyester preparation by means of biomass, and provides a method for preparing polyhexylene 2,5-furandicarboxylate (PHF) by means of biomass. The method comprises the steps that 1,6-HDO and FDCA are subjected to esterification reaction to generate oligomer, through condensation polymerization, high polymer is obtained, and through purification, a product PHF is obtained; the FDCA is obtained by using potassium ferrate as a catalyst for catalyzing an oxidized woody biomass based platform chemical compound HMF. According to the method, the FDCA and the 1,6-HDO are used as raw materials, and both the FDCA and the 1,6-HDO are environmentally friendly and come from the biomass, so that green and economic preparation of the PHF is achieved; the method hasthe advantages of being low in catalyst cost, environmentally friendly and pollution-free; the reaction system of a catalyst promoter and the potassium ferrate / sodium hydroxide / dipotassium phosphategenerates a synergistic effect, so that the yield of the FDCA is improved; butyl titanate can not only be used as a catalyst of the esterification reaction, but also be used as a catalyst of condensation polymerization, so that one-time adding in a reaction process is achieved, experimental operation is made simple, convenient and safe, and the synthesis efficiency is high.

The invention discloses a method for preparing porous hydroxyapatite particles for deeply absorbing copper ions in solution, belonging to the technical field of chemical preparation. First, drop the phosphoric acid solution into the calcium hydroxide suspension containing citric acid to prepare a solution containing hydroxyapatite colloid. After washing with ammonium chloride, add polyvinyl alcohol with an average degree of polymerization of 350 or 1750, and then After hydrothermal treatment at C for 6 hours, cool to room temperature and centrifuge, dry the sediment at 60°C and put it in a solution containing polyethylene glycol (average molecular weight: 2000), dry at 80°C, and then heat up After calcination at 600°C and heat preservation for 2 hours, cooling with the furnace, the obtained particles were crushed and sieved to prepare porous hydroxyapatite particles for deep adsorption of copper ions in the solution. The process of the method is simple, the price of raw materials is low, the prepared porous hydroxyapatite particles have high porosity and low crystallinity, and the removal speed, high removal rate and high adsorption capacity of copper ions in the solution are fast.

The invention provides a method for increasing the amount of thalli obtained by fermentation of bacillus cereus, increasing the proportion of spores generated from the bacillus cereus and improving the storage stability of the bacillus cereus. The method comprises the following steps: in the fermentation culture process of bacillus cereus, air is introduced into the bottom of a fermentation tank, and the introduction speed of the air is 1-10 L / min, preferably 7-10 L / min. Therefore, by adjusting the fermentation process, the amount of thalli obtained by fermentation of the bacillus cereus, the proportion of spores generated from the bacillus cereus and the storage stability can be greatly improved.

The invention discloses a method for accelerating element diffusion on the surface of low-carbon steel. Step 1: remove oil stains and oxides on the surface of low-carbon steel materials, mix hard ceramic powder with elemental powder, and put it into a grinder for mechanical mixing for 20-120 minutes to make the powder Refining and fully mixing; Step 2: Treat the surface of the sample obtained in Step 1 by bombarding it with supersonic particles, dry it after ultrasonic cleaning, heat treat the sample, and finally obtain a low-carbon steel material with better diffusion effect . The process of the invention is simple and easy, and at the same time, the cost is low, and the deformation of the material is small, the surface is more uniform, the process is simple, and the powder can be reused to facilitate industrial production. It has less environmental pollution and less energy consumption, and can be widely used in the boronizing and carburizing process of industrial gears.

The invention discloses a fluorine-containing surfactant and its preparation method and application. The preparation method of the surfactant is to react a fluorocarbon acrylate compound with an amine compound and then react with an acid anhydride to obtain a fluorine-containing surfactant. Chain surfactants, this reaction can prepare a new type of fluorosurfactant containing 1 to 3 fluorocarbon chains by using different unit amines, diamines and triamines. This new type of surfactant has excellent The characteristics of reducing the surface tension of the liquid, the preparation method has the advantages of easy to obtain raw materials, easy structure control, high reaction yield and good product characteristics. At the same time, the preparation method avoids the use of phosphorus oxychloride or phosphorus trichloride. Pollution and high-risk chemical materials reduce the threshold for the preparation of fluorine-containing surfactants, no by-products are eliminated during the reaction process, and production equipment will not be corroded, which is especially helpful for industrial production.

The invention belongs to the technical field of analysis and discloses a method for detecting the purity of methyl 2-(2-chloro-1-ethylene)hydrazide formate. The detection method comprises the following steps: dissolving methyl 2-(2-chloro-1-ethylene) hydrazide formate in a diluent to obtain a control sample solution; dissolving a sample to be tested in a diluent to obtain a test sample Sample solution; take the control sample solution, detect with liquid chromatography, and record chromatogram A; take the sample solution to be tested, detect with liquid chromatography, and record chromatogram B; calculate the purity from chromatogram A and chromatogram B; The condition of phase chromatography comprises: mobile phase A and mobile phase B; Mobile phase A is phosphate buffered saline and acetonitrile; Mobile phase B is acetonitrile; The volume ratio of the phosphate buffered saline in mobile phase A and acetonitrile is (950 ± 8 ): (50±0.8). The detection method can accurately detect the purity of methyl 2-(2-chloro-1-ethylene) hydrazide formate in the sample to be tested.

The invention discloses a preparation method of a dialdehyde cellulose Salen MX catalyst. The method includes the steps of: 1) substituting the hydroxyl groups of 2nd and 3rd positions of cellulose into aldehyde groups, and adding ortho-aminophenol to perform a reaction at 50-70 DEG C for 2-4 h, filtering the reaction product to obtain a brown precipitate; 2) repeatedly washing the brown precipitate with ethanol, and drying the brown precipitate at room temperature to obtain a dialdehyde cellulose Salen MX ligand; 3) adding a transition metal compound and the dialdehyde cellulose Salen MX ligand to ethanol at the same time, performing a stirring reaction for 12-18 h at 40-70 DEG C under protection by N2, adding anhydrous LiCl, feeding air, and performing stirring reaction for 24-36 h at 30-50 DEG C; 4) filtering the reaction product to obtain a dark-brown precipitate, repeatedly washing the dark-brown precipitate with ethanol and water, and drying the dark-brown precipitate at room temperature to obtain the dialdehyde cellulose Salen MX catalyst. The dialdehyde cellulose Salen MX catalyst has excellent application prospect in the fields of catalyzing epoxidation of natural monoterpenes and copolymerization of epoxy compounds, is simple in preparation method, can be repeatedly used for more than eight times, is prepared with regenerable supporter, is high in yield and selectivity, and has advantages in industrial production of olefin catalytic epoxidation.

The invention relates to a plant nutrient for planting selenium-enriched rice. The plant nutrient comprises nano selenium dioxide, sulfur-containing amino acid, bacillus subtilis and a Tween surfactant. According to the plant nutrient disclosed by the invention, inorganic selenium is converted into biological organic selenium through the photosynthesis of rice under the combined action of sulfur-containing amino acid and bacillus subtilis, and the biological organic selenium is naturally enriched in the rice, so that the selenium content of the rice is increased. Particularly, according to the plant nutrient disclosed by the invention, through the Tween surfactant formed on the surface of the nano selenium dioxide, the damage of the nano selenium dioxide to the activity of the bacillus subtilis is favorably inhibited, so that the storage stability of the plant nutrient is favorably improved, and the industrial production is facilitated.

The invention belongs to the technical field of analysis, and discloses a method for detecting the purity of 3-chloromethyl-1, 2, 4-triazoline-5-one. The detection method comprises the following steps: dissolving 3-chloromethyl-1, 2, 4-triazoline-5-one in a diluent to obtain a control sample solution; dissolving a to-be-detected sample in the diluent to obtain a to-be-detected sample solution; taking the control sample solution, detecting by liquid chromatography, and recording a chromatogram A; taking the to-be-detected sample solution, detecting the to-be-detected sample solution by liquid chromatography, and recording a chromatogram B; and calculating the purity according to the chromatogram A and the chromatogram B. The conditions of the liquid chromatography comprise a mobile phase Aand a mobile phase B; the mobile phase A is a phosphate buffer solution and acetonitrile; the mobile phase B is acetonitrile; and the volume ratio of the phosphate buffer solution to acetonitrile in the mobile phase A is (950 + / -5): (50 + / -0.5). The detection method can accurately detect the purity of the 3-chloromethyl-1, 2, 4-triazoline-5-one in the to-be-detected sample.

The invention relates to a stem cell growth factor ethosome containing penetration-promoting peptide and a preparation method thereof, which belong to the technical field of biomedical preparations, and the preparation method specifically comprises the following steps: collecting a stem cell culture supernate, and enriching stem cell secretion factors as a water phase; dissolving phospholipid, cholesterol and vitamin E with an alcoholic solution to obtain an oil phase; mixing the two phases to obtain a stem cell factor ethosome solution; homogenizing and unifying the particle size, and then mixing with a permeability-promoting peptide to obtain the stem cell growth factor ethosome containing the permeability-promoting peptide. The permeability-promoting peptide has the effect of further improving the permeability capacity of the ethosome to enable the ethosome to reach the deep layer of skin tissues, so that the curative effect of stem cell factors wrapped by the ethosome is enhanced.The ethosome produced according to the invention has the advantages of stable property, higher encapsulation efficiency and simple technological process, and is suitable for industrial production.

The invention discloses an aluminum acetylacetone cathode modified polymer solar cell and a preparation method thereof. In a light incident direction, the cell structure sequentially comprises an ITOglass substrate, a cathode modification layer, an active layer, an anode modification layer and a metal electrode. The cathode modification layer is an aluminum acetylacetone film. According to the invention, a prepared aluminum acetylacetone solution is processed on the ITO glass substrate through a solution processing method to form a film; annealing heat treatment is carried out to acquire thecathode modification layer; and the active layer, the anode modification layer and the metal electrode are sequentially prepared to acquire the aluminum acetylacetone cathode modified polymer solar cell. The preparation method has the advantages of simple process, low cost and good repeatability, and is beneficial to large-scale industrial production. According to the invention, aluminum acetylacetone is introduced as a cathode modification layer material in the polymer solar battery; efficient electron collection is realized; and the aluminum acetylacetone cathode modified polymer solar cellwith high photoelectric conversion efficiency is acquired.

The invention discloses a method for efficiently preparing deuterated acetonitrile by photoelectric integrated catalysis, which is characterized in that deuterium water which is cheapest and easy to obtain is used as a deuterium source, acetonitrile is used as a raw material, and a plurality of catalysts are used for synergism to react at room temperature for a plurality of hours. And after the reaction is finished, carrying out reduced pressure distillation and drying to obtain the deuterated acetonitrile. The deuteration rate of the deuterated acetonitrile is greater than 99.8% through high-resolution mass spectrometry detection, and the deuterated acetonitrile meets the standard of commercial deuterated acetonitrile.

The invention belongs to the technical field of preparation of thermoelectric materials and particularly relates to a microwave sintering synthesis method of an oxide thermoelectric material Ca3-xKxCo4O9. The microwave sintering synthesis method comprises the following steps of (1), firstly weighting CaCO3, K2CO3 and Co2O3 according to stoichiometric molar ratio in Ca3-xKxCo4O9, grinding, placing ground powder in a crucible, placing the crucible in a sintering furnace, heating to 820-880 DEG C, pre-sintering for 20-30 hours at a constant temperature, cooling to room temperature in the furnace and taking out; and (2) carrying out second grinding on pre-sintered powder, pressing to sheets, holding the sheets in a double crucible, placing the double crucible in a flattening microwave oven, heating the double crucible for 10-15 minutes at a power of 400-640W, cooling the double crucible to room temperature in the furnace, taking out and pressing into sheets to obtain the target product. The method is simple in operation, the reaction raw materials during the reaction are solid, the chemical components of a reaction product is easy to control, the reaction time is short, the cost is low and the large-scale batch production of the material is facilitated; and the thermoelectric parameter power factor of the product prepared by the method is higher than that of the product prepared by virtue of a high-temperature-furnace sintering method and the thermoelectric performance is more prominent.

The invention relates to the technical field of hydrotalcite material supported catalysts, in particular to an M-Ti hydrotalcite-based closed boron cluster MB x H x The preparation method and application of nano-scale precious metal, the specific steps are as follows: dissolving alkali in water, adding dropwise soluble titanium salt and closed boron cluster MB respectively at the same time x H x The solution was continuously stirred under nitrogen protection until the reaction was complete, and then aged to obtain M-Ti hydrotalcite-based closed boron clusters MB x H x ; M-Ti hydrotalcite-based closed boron cluster MB x H x Disperse in water, add soluble salt of precious metal, stir and react under ultraviolet light irradiation at 20-50°C, filter to obtain precipitate, wash and dry to obtain the M-Ti hydrotalcite-based closed boron cluster MB x H x Nanoscale precious metals. The invention utilizes the reducibility of closed boron clusters, in-situ supports nano-precious metal particles on the surface of hydrotalcite, and the precious metal is wrapped by boron clusters, which is more stable and not easy to fall off.

The present invention relates to a method for producing rice cake made of fresh fermented glutinous rice and yeast through collaborative fermentation and its processed products. The method comprises the following steps: first, using fresh fermented glutinous rice to ferment the rice milk with oxygen to obtain fermented rice milk with fresh fermented glutinous rice; Yeast is added to fermented rice milk for brewing fermented rice to carry out collaborative fermentation; finally, steaming and maturing are carried out to obtain the rice cake. The invention adopts the step-by-step synergistic fermentation method of fresh fermented rice and yeast to make rice cakes, and the synergistic cooperation of the two can effectively optimize the quality of rice cakes, making the product soft in texture, good in elasticity and toughness, smooth in taste, and rich in sweet and sour flavor, and can be effectively The product fermentation time is reduced, the production cycle is shortened, and industrialized production is helpful.