49results about How to "Potential for industrial production" patented technology

The invention discloses a genetically engineered bacterium co-generating geraniol and nerol and a construction method and an application thereof, and belongs to the technical field of generic field. According to the genetically engineered bacterium disclosed by the invention, acetyl coenzyme A acyltransferase / hydroxymethyl glutaryl coenzyme A reductase, 3-hydroxyl-3-methyl glutaryl coenzyme A synthase, mevalonic acid kinase, mevalonic acid-5-phosphokinase, mevalonic acid-5-diphosphonic acid decarboxylase, isopentenylpyrophosphate isomerase, geranyl diphosphonic acid synthetase and geraniol synthetase or phosphatase are expressed. The metabolic pathways of geraniol and nerol synthesized in escherichia coli are successfully constructed by genetic engineering means, and glucose is biologically converted into geraniol and nerol.

The invention discloses a method for preparing a sodalite pure phase by taking oil shale ash as a raw material, and belongs to the field of production and preparation of inorganic functional materials. The method is characterized by comprising the following steps: firstly determining contents of SiO2 and Al2O3 in the oil shale ash raw material, sieving the oil shale ash by a sieve, and drying the oil shale ash in an oven; after drying, evenly mixing the oil shale ash with NaOH and deionized water, and stirring the mixture electromagnetically at normal temperature, wherein the proportion of a reaction raw material formulation is as follows: the proportion of H2O to Na2O is equal to 5.0-7.8, and the proportion of the Na2O to the SiO2 is equal to 2.5-7.0; transferring the materials into a reaction kettle, and crystallizing the materials at constant temperature; and finally, filtering, washing and drying the product to obtain the sodalite pure phase. The method has the advantages of preparing a sodalite molecular sieve pure phase from the low-cost raw material oil shale ash. The pretreatment for the oil shale ash is simple, has no redundant heat treatment and acid treatment, and saves energy; and the preparation flow has no alkali fusing process, simple process, easy operation, and friendly environment.

The invention discloses a method for preparing mordenite by using diatomite and belongs to the field of production and preparation of inorganic functional materials. The method is characterized by comprising the following steps of: firstly determining the content of SiO2 and Al2O3 in a diatomite raw material, screening through a screen, and then drying in a drying box; uniformly mixing the dried diatomite raw material with deionized water and water glass, wherein the proportion of reaction raw materials in the formula is as follows: H2O / Na2O=8-11, Na2O / SiO2=0.05-0.30, SiO2 / Al2O3=12-16; transferringthe material into a reaction kettle, and crystallizing at constant temperature; finally filtering, washing and drying the product to obtain the mordenite. According to the method disclosed by the invention, mordenite is prepared from the low-cost raw material diatomite; few diatomite pretreatment steps are carried out; and the energy source is saved through use of direct hydrothermal method synthesis. The preparation process has the advantages of simple process, easy operation and environmental friendliness.

The invention discloses a method for preparing a lithium ion battery silicon-carbon composite negative electrode material by taking konjac flour as a carbon source, and belongs to the technical fieldof an energy new material. The method comprises the following steps: ultrasonically dispersing the konjac flour into water to form a gel-like material, adding silicon powder into the gel-like materialby a magnetic stirrer, stirring for 2 to 12 hours, drying, placing a sample into a tubular furnace, performing heat preservation at 200 to 400 DEG C for 1 to 4 hours in the atmosphere of inert gas, heating to 500 to 900 DEG C, performing heat preservation for 1 to 8 hours, cooling to room temperature, and grinding uniformly to obtain the silicon-carbon composite negative electrode material. The method is simple in process and mild in experiment condition; and the prepared silicon-carbon composite negative electrode material has high specific capacity and high cycling performance and is suitable for large-scale production.

The invention belongs to a method for preparing a zeolite molecular sieve and relates to a method for preparing a NaX-type zeolite molecular sieve pure phase by using clay. The method comprises the following steps: stirring and mixing clinker prepared by mixing and calcining clay and sodium carbonate with sodium metaaluminate and water into colloid, crystallizing, filtering, washing and filtering to obtain the NaX-type zeolite molecular sieve pure phase. The filtered mother solution is recycled and serves as one part of the raw material. The mother solution is recycled, so that the synthetic cost is reduced, waste discharge is avoided, and the environment is not polluted. The method has obvious advantages in aspects of preparation cost, product performance, process flow, environment friendliness and economic profits, and the raw material source is rich, the cost is low, the synthesis simple and convenient, the equipment requirement is low, the product performance is high and the industrial production potential is high.

The invention provides a preparation method of a silicon oxide nanosheet composite ternary positive electrode material for a lithium battery. The preparation method comprises the following steps: adding silicon-lithium alloy (Li13Si4) powder into absolute ethyl alcohol and isopropanol to prepare a silicon-lithium alloy dispersion liquid; then conducting slow stirring and reacting in an ice-water bath to obtain a nano-silicon wafer dispersion liquid; then mixing and stirring the nano-silicon wafer dispersion liquid with nickel acetate, cobalt acetate, manganese acetate and deionized water, thenadjusting a pH value, and carrying out rotary evaporation on the solvent to obtain silicon nanosheet / NCM precursor slurry; and finally, conducting sintering under an oxygen-enriched condition to obtain the positive electrode material for the lithium battery. According to the method provided by the invention, silicon nanosheets are formed by delithiation of the silicon-lithium alloy, then the silicon nanosheets are loaded with NCM to form a uniform layered structure, and the uniform layered structure is oxidized to support positive electrode particles as a framework, so the layered structure can be inhibited from being converted into a spinel structure in circulation and sintering processes, and the structural stability of the positive electrode material is remarkably improved; and the method is simple and controllable in preparation procedures and has industrial production potential.

The invention discloses a preparation method for preparing a medium-low pressure composite dielectric film-containing formed foil by a surface self-assembly method. According to the method, low-pressure corrosion foil serves as a raw material, and surface modification is conducted on the aluminum foil through a soaking method. The preparation method comprises the following steps: sequentially soaking a corrosion foil in a solution taking 5-10mmol / L of gamma-mercaptopropyltrimethoxysilane and cyclohexane as solvents for 5 hours, a solution taking CH3COOH / H2O2(Vol) as a ratio of 5: 1 for 1 hour,and 0.3-0.8 mol / L of Ti gel for 5-10 hours; and carrying out heat treatment at 500 DEG C for 5 minutes after airing; carrying out anodic oxidation on the aluminum foil, preparing a formation solutionby taking ammonium adipate and ammonium citrate as solutes, and carrying out six-stage gradient formation on the modified aluminum foil according to the conditions that the current density is 0.1-0.3A / cm < 2 > and the voltage is 12-141 V; and sequentially carrying out intermediate treatment, re-formation, heat treatment and post-treatment on the aluminum foil to finally obtain the high-specific-volume intermediate-low-pressure composite dielectric film-containing formed foil. The method has the advantages that the process is simple, and the operation is convenient. The deposition amount of TiO2 on the surface of the aluminum foil is large, and the prepared aluminum foil is high in specific volume.

The invention discloses a preparation method of a medium-low pressure formed foil containing a composite dielectric film. According to the method, a low-pressure corrosion foil is used as a raw material, and the corrosion foil is put into Ti-containing sol through a soaking method, so that the surface of the aluminum foil contains the Ti-containing sol. Anodic oxidation is carried out on the pretreated aluminum foil, and the specific operations comprise six-stage formation, intermediate treatment, re-formation, heat treatment and post-treatment. The formation liquid is prepared from ammonium adipate, sodium citrate and deionized water, and the intermediate treatment liquid is prepared from phosphoric acid, citric acid and deionized water. The post-treatment liquid is prepared from ammoniumdihydrogen phosphate, ammonium dihydrogen citrate and deionized water. The preparation method is simple in process and convenient to operate, and the prepared aluminum foil is higher in specific volume and higher in hydration resistance.

The invention discloses beta-1,3-D-glucan modified biomimetic hollow silicon dioxide composite particles and application thereof. The composite particles are obtained by performing a coupling reactionon biomimetic hollow silicon dioxide particles and beta-1,3-D-glucan, wherein the pore diameter range of nanometer transmission pore passages of the biomimetic hollow silicon dioxide particles is 1.7-15.2nm. The composite particles have the morphologies of bacteria and the nanometer transmission pore passages with appropriate pore diameter distribution, facilitate passing of antigens and medicines with different molecular weights, have relatively high antigen loading capacity, can continuously release the antigens, can increase the antigen utilization rate, reduce the number of injections andreduce toxic and side effects of the antigens and vaccine adjuvants, and continuously provides an immunoprotective effect; the composite particles have the equivalent level of inducing antigen-specific antibodies to an aluminum adjuvant and a Freund's adjuvant, and have a wide application prospect in the biomedical field; in addition, the composite particles is simple in preparation method, low in cost, environment-friendly and low in preparation cost, and have an industrial production potential.

The invention discloses a method for preparing a cellulose solution. The basic technical principle is to improve the wettability of the solvent to natural cellulose crystals by regulating the amphiphilic properties of the cellulose solvent, thereby promoting the dissolution of the cellulose. Based on this principle, the room temperature temperature and dissolution technology method of cellulose was proposed. The method has the advantages of simple process, dissolution at room temperature, environmental friendliness and insensitivity to the water content of the system. The cellulose solvent adopts the following composition: organic base accounts for 5-70% of the total weight of the solvent, additives account for 2-90% of the total weight of the solution, and water accounts for 1-65% of the total weight of the solvent. The cellulose is blended with the cellulose solvent to form a blend, and stirred until completely dissolved to obtain the target cellulose solution. The cellulose solution prepared by the method of the present invention is used for manufacturing regenerated cellulose film, regenerated cellulose fiber or cellulose-based composite material.

The invention discloses a preparation method for preparing medium-low pressure compound medium-containing film forming foil by surface self-assembly method. In the method, the low-pressure corroded foil is used as a raw material, and the surface of the aluminum foil is modified by a soaking method. Soak the corroded foil in the solution of 5~10mmol / L γ-mercaptopropyltrimethoxysilane and cyclohexane as solvent for 5 h, CH 3 COOH / H 2 o 2 (Vol)=5:1 solution for 1 h, 0.3~0.8mol / L Ti gel soaked for 5~10 h. Heat treatment at 500°C for 5 min after drying. After that, the aluminum foil is anodized, and ammonium adipate and ammonium citrate are used as solutes to prepare a chemical solution, according to the current density of 0.1~0.3A / cm 2 , and the voltage ranged from 12 V to 141 V to perform six-level gradient formation on the modified aluminum foil. The aluminum foil is then subjected to intermediate treatment, re-formation, heat treatment, and post-treatment operations in sequence, and finally a high specific volume medium-low pressure compound dielectric film-containing foil is obtained. The advantages of the present invention are: simple process, convenient operation; TiO 2 The amount of deposition on the surface of the aluminum foil is large, and the specific volume of the aluminum foil made is high.

The invention discloses a preparation method of pulullan-animal esterase composite nanofiber. The method comprises the following steps of: extracting and purifying animal liver to prepare an animal esterase solution, then uniformly mixing the animal esterase solution with a pulullan solution to obtain a pulullan-animal esterase electrostatic spinning solution, and finally performing electrostatic spinning to prepare the pulullan-animal esterase composite nanofiber. The average diameter of the pulullan-animal esterase composite nanofiber is 70.39-108.79nm, animal esterase is uniformly distributed on the surface of the nanofiber, and the lower limit of detection on pesticide carbaryl is 0.81-1.10mg / L. The preparation method disclosed by the invention realizes immobilization of a nano material of the animal esterase, and has the advantages of simple process, low cost, environmental friendliness and the like.

The invention discloses a preparation method for low-pressure forming foil of a film containing a composite medium. In the method, low-pressure corroded foil is used as a raw material, and the corroded foil is put into Ti-containing sol through a soaking method, so that the surface of the aluminum foil contains Ti sol. The pretreated aluminum foil is anodized, and the specific operations include: six-stage chemical formation, intermediate treatment, re-formation, heat treatment, and post-treatment. The chemical conversion solution is prepared from ammonium adipate, sodium citrate and deionized water, and the intermediate treatment solution is prepared from phosphoric acid, citric acid and deionized water. The post-treatment solution is prepared by adding ammonium dihydrogen phosphate, ammonium dihydrogen citrate and deionized water. The invention has simple process and convenient operation, and the produced aluminum foil has higher specific volume and stronger hydration resistance.

The invention discloses an actinobacillus succinogenes GXAS-137, and a method for producing succinic acid by screening and fermentation of the strain; the strain is obtained by enrichment and screening from a cattle rumen; the method comprises the following steps: inoculating the actinobacillus succinogenes strains in a seed medium, culturing for 24-36 hours in an anaerobic incubator or a common incubator at 30-38 DEG C in a static manner, inoculating into a fermentation medium with an inoculation amount of 1-10%, adjusting the pH to 6.0-7.0, and performing fermentation at 30-38 DEG C for 24-120 hours to obtain succinic acid. Fermentation research is performed with different raw materials and in different media; the succinic acid yield is up to 70 g / L; and the method has potential for industrial production.

The invention discloses a method for preparing a sodalite pure phase by taking oil shale ash as a raw material, and belongs to the field of production and preparation of inorganic functional materials. The method is characterized by comprising the following steps: firstly determining contents of SiO2 and Al2O3 in the oil shale ash raw material, sieving the oil shale ash by a sieve, and drying theoil shale ash in an oven; after drying, evenly mixing the oil shale ash with NaOH and deionized water, and stirring the mixture electromagnetically at normal temperature, wherein the proportion of a reaction raw material formulation is as follows: the proportion of H2O to Na2O is equal to 5.0-7.8, and the proportion of the Na2O to the SiO2 is equal to 2.5-7.0; transferring the materials into a reaction kettle, and crystallizing the materials at constant temperature; and finally, filtering, washing and drying the product to obtain the sodalite pure phase. The method has the advantages of preparing a sodalite molecular sieve pure phase from the low-cost raw material oil shale ash. The pretreatment for the oil shale ash is simple, has no redundant heat treatment and acid treatment, and savesenergy; and the preparation flow has no alkali fusing process, simple process, easy operation, and friendly environment.

The invention discloses a boron carbide / silicon carbide ceramic hollow microsphere and a preparation method thereof. The preparation method utilizes a vinyl silane coupling agent to modify boron carbide, and then grafts PCS to B 4 on C‑V, then B 4 C-PCS is prepared into a slurry, and the polymer ball is used as a template to prepare a slurry coating ball, and finally the slurry on the polymer ball is cured in an air atmosphere, and then heat-treated in an air atmosphere to remove polymerization. Object spherical template, and finally fired at high temperature in an inert atmosphere to obtain boron carbide / silicon carbide ceramic hollow microspheres. The preparation method provided by the present invention can adjust the diameter of boron carbide / silicon carbide ceramic hollow microspheres by selecting polymer spheres with different diameters, and realize a wide range of diameter control, and the wall thickness of ceramic hollow microspheres can be changed by changing the slurry coating. The thickness of the wall can be adjusted in a wide range by adjusting the number of coating times. The preparation method is simple, convenient, fast and efficient, and the raw materials are cheap and easy to obtain, which has the potential for industrial production.