28 results about "High activity" patented technology

The invention belongs to the field of building material, which more particularly relates to a preparation method and application of a mineral admixture with high activity that takes wasted concrete as raw material. The preparation method of the mineral admixture with high activity comprises the following steps: (1) the wasted concrete is collected, the sundries are removed, and crushing equipment is used for processing concrete blocks into particle with diameter of being distributed in 2 to 40mm as recycled aggregate; (2) grinding or crushing equipment is used for striping and exfoliating the cement paste attached on the surface of the recycled aggregate, thus separating the formed powder with hardened cement stone and having diameter of 0.05 to 1mm to be the raw materials of the mineral admixture with high activity; (3) powder preparation equipment are used for processing the raw material further into superfine powder with Bertrand rate surface area not less than 600m<2>/Kg, that is the finished products of mineral admixture with high activity. The preparation method and application of a mineral admixture with high activity that takes wasted concrete as raw material has the advantages of good economy, high performance price ratio, large marketing need, good environmental protection and economy benefit, which has wide prospect for generalization and application.

The invention discloses a phenol ortho-methylation catalyst and a preparation method thereof. The catalyst is an alkaline Fe/Mg compound oxide, wherein, the mol ratio of Fe to Mg is 1: (0.1-2). The preparation method comprises the following steps: mixing and dissolving soluble malysite and soluble magnesium salts into alcohols solvent according to a required proportion to prepare a solution A; adding polyethyleneglycol (PEG) into strong aqua ammonia to prepare a solution B; slowly mixing the solution A and the solution B in a cocurrent flow mode under the condition of normal temperature and ultrasound, and then going on with the ultrasound for 30 minutes; filtering, washing, drying and baking the obtained precipitation; porphyrizing the baked solid and repulverizing the solid into 10-20 mesh finely ground particles after tabletting; the finely ground particles are the catalyst. The catalyst has the advantages of high activity at low temperature, simple preparation, innocuity, good stability, high selectivity of ortho position, particularly high selectivity of orthocresol and few by-products.

The invention provides a catalyst for selective hydrogenation and olefin removal of reformed generated oil. The catalyst comprises an active component oxide, an auxiliary agent oxide and a carrier, wherein according to the content of metal, the content of the components is as follows in percentage by mass: 0.05-0.5wt% of the active component oxide, 0.5-10wt% of the auxiliary agent oxide and the residual amount of the carrier; the active component oxide is at least one of oxides of noble metal Pt, Pd and Ru; the auxiliary agent oxide is one or two of oxides of Na, K, Mg, Ca, Co, Fe, Ni, Mo and Cu; the carrier is Al2O3. The catalyst has the advantages of high activity, good selectivity, long service life and low cost.

The invention relates to the technical field of photocatalysis, and specifically relates to a graphene-based gamma-FeO2O3 composite material photocatalyst, and a preparation method and use thereof. According to the graphene-based gamma-FeO2O3 composite material photocatalyst, gamma-Fe2O3 particles are attached to the surface of graphene, size distribution of the graphene is 1-50 mu m and the size distribution of the gamma-Fe2O3 particles is 20-500nm. The preparation method mainly comprises the following steps: preparation of graphite oxide; preparation of a graphite oxide iron sulfate hydrate intercalating matter; and preparation of the graphene-based gamma-FeO2O3 composite material photocatalyst. The graphene-based gamma-FeO2O3 composite material photocatalyst prepared by the preparation method disclosed by the invention has high carrier transmission rate, large specific surface area and low energy gap, so that the photocatalyst has extremely high activity of photocatalytic degradation of organic matters. The photocatalytic activity of the photocatalyst disclosed by the invention is over 86% higher than that of pure gamma-FeO2O3 particles. The photocatalyst has good circular stability, can be repeatedly used for many times, and does not cause secondary pollution in the photocatalytic degradation process.

An iron removing flux for Mg alloy contains magnesium chloride, potassium chloride, sodium chloride, calcium chloride, calcium fluoride and Ti (or Mn) compound. Its advantages are high effect on removing iron and other impurities from Mg alloy, high activity and low cost.

The invention discloses a bacterial strain for producing laccase, a method for producing laccase by the bacterial strain, the produced laccase and application of the laccase, and relates to the field of microbial enzyme. The bacterial strain for producing laccase is trametes pubescens (Trametes pubescens BJFC-C1108) with a microbial preservation number of CGMCC No. 10308. By utilizing the trametes pubescens (Trametes pubescens BJFC-C1108), the yield of the produced laccase is relatively high; the enzyme activity can be up to 28.687 U/mL; the prepared laccase has relatively high activity, stability and tolerance under the alkali condition (pH 7.0-10.0), has relatively high tolerance for metal ions, can be used for shortening the time required by complete decoloring of azo dye Congo red to a certain extent, has a potential application value, can be applied to more industrial fields and has favorable development and application prospects.

The invention relates to a method for extracting fulvic acid from sugar cane deep processing alcohol slops. The method comprises the following steps of: heating the alcohol slops under reduced pressure for performing evaporation concentration, and adding sulfuric acid for ageing; alkalifying an ageing solution with a sodium hydrate solution, and separating to obtain a dissolved part; acidifying the dissolved part with a hydrochloric acid solution, and separating to obtain a dissolved part; and adding acetone into the obtained dissolved part, centrifugally separating, and concentrating an acetone solution to obtain fulvic acid. According to the method, alcohol slops are fully utilized, and high-activity fulvic acid is produced.

The invention discloses kelp microcrystalline cellulose and a preparation method thereof as well as application of the prepared microcrystalline cellulose. The preparation method of the kelp microcrystalline cellulose comprises the following steps of by adopting waste kelp residues after kelp glue-extracting as the materials, carrying out flocculation collecting, acidification decalcification, alkaline treatment, bleaching treatment, washing, drying and hydrolytic treatment, wherein in the hydrolytic treatment, two different low-temperature cellulases are respectively added according to the addition of 20U/g-30U/g; carrying out enzymolysis for 0.5-12 hours in a water bath of 10 DEG C-40 DEG C; and drying and crushing to obtain the kelp microcrystalline cellulose. According to the preparation method of the kelp microcrystalline cellulose, the production cost is low, the environment pollution is small, the hydrolysis step adopts a double-enzyme jointed enzymolysis technology, the degradation speed is stable, the degraded cellulose is uniform in molecular weight, the cellulose crystalline grains are small and uniform, degradability of the fibers can be effectively controlled, and the microcrystalline cellulose with high purity and high activity is obtained. The kelp microcrystalline cellulose disclosed by the invention is high in cellulose content, high in water holding capacity and expansion force, and can be used for food additive and pharmaceutical adjuvant in the food industry.

Belonging to the technical field of catalysts for oxidation of benzene to maleic anhydride, the invention in particular relates to a catalyst for oxidation of benzene to maleic anhydride, a preparation method and application thereof. The catalyst for oxidation of benzene to maleic anhydride provided by the invention still has high conversion rate and maleic anhydride mass yield under the conditionof a low molten salt temperature. The catalyst with high activity and low molten salt service temperature provided by the invention can save a large amount of electrical power energy, and has a positive promoting effect on the maintenance and service life of the reaction device. Moreover, due to the high activity of the catalyst, the way of diluting the catalyst bed layer with a carrier can alsobe employed to reduce the catalyst consumption, thus further reducing the cost of enterprises.

The invention discloses an activated carbon-supported ruthenium-based ammonia synthetic catalyst and a preparation method thereof. The preparation method comprises the steps of with potassium ruthenate K2RuO4 H2O as a metallic ruthenium precursor, liquid ammonia and acetic acid as a stabilizer of ruthenium impregnation liquid, alkaline metal and alkaline-earth salts or bases as aids, and activatedcarbon as a supporter, performing impregnating to obtain the activated carbon-supported ruthenium-based ammonia synthetic catalyst. The activated carbon-supported ruthenium-based ammonia synthetic catalyst prepared herein is free of chlorine ions; active ingredients and the aids are distributed evenly on the catalyst; the prepared catalyst has stable performance, high activity, and good safety ofuse and is suitable for industrial production and application.

A catalyst for production of propylene through catalytic dehydrogenation of propane adopts alumina-chrome oxide as a mixed carrier, metallic Pt as an active component and metallic Sn, La and Ca as assistants, the chemical formula of the catalyst is Pt-Sn-Ca/Cr2O3.Al2O3 and Pt-Sn-La-Ca/Cr2O3.Al2O3, and a mass ratio of Cr2O3 to Al2O3 in the mixed carrier is 2:1. A preparation method of the catalyst has the advantages of simple process and easy operation; a performance test result of the catalyst shows that the catalyst has high propane conversion rate, high activity, long service life and high propylene selectivity; and the initial conversion rate is about 48%, and the catalyst still has a high conversion rate of about 40% and high propylene selectivity of above 91% 4h later, so the catalyst has a great economic effect, and can be industrially popularized.

The invention discloses a preparation method of a high-activity waterproof soap-free emulsion polymer. Raw materials for polymerization comprise: 7 to 19 parts of an amide hydrophilic monomer; 6 to 17parts of a soap-free amide hydrophilic monomer; 0.28 to 0.85 part of a chain transfer agent; 0.21 to 0.49 part of an initiator a; 2.3 to 4.5 parts of an initiator b; 9-18 parts of a soap-free alkyl hydrophobic monomer, 202-267 parts of an alkyl hydrophobic monomer, 3.4-7.8 parts of a cross-linking agent, 2.4-6.7 parts of a flexible small monomer, 5-16 parts of a polyether, 0.4-0.9 part of a graphene oxide functional monomer, 3.2-8.6 parts of a pH regulator, 9-20 parts of a neutralizer and the balance of water, wherein the total amount of the raw materials is 1000 parts. According to the invention, amide monomers and alkyl monomers are used as raw materials; soap-free emulsion polymerization method is adopted to obtain a self-made soap-free polymer for water resistance; and the soap-free polymer is reacted with other raw materials to synthesize an emulsion polymer waterproof coating. According to the method, adverse effects caused by emulsifiers are eliminated, graphene oxide is addedto improve the film-forming property and the film-forming strength of the coating, the added cross-linking agent enhances the density and the hardness of formed film, the cohesiveness is enhanced, andthe waterproof capacity and the weather resistance are improved.

The invention relates to a high-activity multifunctional laundry bead and a preparation method thereof, and belongs to the technical field of daily chemical detergents. The laundry bead is prepared from dodecyl benzene sulfonate, dodecyl benzene sulfonic acid monoethanol amine salt, oleic acid monoethanol amide polyoxyethylene ether, fatty acid methyl ester ethoxylate, amine oxide, an organic silicon compound, deionized water, propylene glycol, an re-deposition resistant agent, triisopropanol amine, an anti-cross-color agent, a bacteriostatic agent, a compound enzyme, a water softener, a fluorescent whitening agent, a preservative, citric acid, essence and perfume. The raw materials are uniformly mixed and stirred, the pH is adjusted, then discharging is carried out, and finally packagingis performed to obtain the laundry bead. By adding a little amount of solvent and the dissolving property of a nonionic surfactant, the active matter content of the laundry bead can reach 80% and is 3-4 times higher than that of a traditional detergent in the market.

The invention discloses an anode with high activity, carbon deposition resistance and sulfur poisoning resistance for a solid oxide fuel cell. The anode is formed by compounding a metal material and a cerium-zirconium based oxide material. The anode disclosed by the invention can be used for effectively reducing the anode carbon deposition and the poisoning effect of a sulfur-containing compound on the anode for the solid oxide fuel cell which takes organic hydrocarbon as fuel, thereby reducing the polarization resistance of the anode and effectively enhancing the medium-low temperature property of a cell and the long-term stability of the cell.

The invention relates to a preparation method of a high activity Pd/C catalyst, and the preparation method is mainly used for solving the problems of poor Pd dispersion in the catalyst, low microcrystal content and poor thermal stability of the prior art. The preparation method adopts activated carbon as a carrier and impregnates or sprays solution containing Pd on the activated carbon for preparing the Pd/C, wherein, two additives of A and B are added in the solution containing Pd, the additive A is selected from compounds with the above formula, R1 or R2 is selected from one of H, CH3, NH2, OH or COOH, n or m is selected from integrals of 0 to 5; the additive B is selected from compounds with the following formula: CH3(CH2)xO(CH2CH2O)yPO(OM)2(CH3(CH2)xO(CH2CH2O)y)2PO(OM), wherein, y is selected from the integrals of 1 to 5; x is selected from the integrals of 7 to 15; M is selected from Na or K; therefore, the technical proposal can better solve the problems and can be used in the industrial production of para-toluic acid catalyst by using 4-carboxy benzaldehyde.

A 7-[4-[4-(2,3-dichlorophenyl)-1-piperazine]-2- butenoxy]-3,4-dihydro-2-(1H)-quinoline-2-one and its receptable salt, its preparing process featuring use of high-activity, 1,4-dibromo-2-butene to replace 1,4-bibromobutane, its application in preparing aripiperazole and the process for preparing aripiperazole are disclosed.

The invention relates to the field of preparation of pillared layered saponite-containing catalyst carrier by using saponite, and in particular, provides a catalyst carrier and a preparation method and an application thereof. The method comprises the steps: (1) grinding a first slurry containing hydrogen type pillared layered saponite, mixing the first slurry after grinding with an alumina source, and dispersing evenly to obtain a second slurry; and (2) mixing the second slurry with an adhesive, and molding to obtain the catalyst carrier. The invention also provides a hydroisomerizing cracking catalyst and an application thereof. According to the preparation method of the catalyst carrier, the first slurry containing the hydrogen type pillared layered saponite is ground, the first slurry after grinding is mixed with the alumina source, and then the mixture is dispersed evenly to obtain the second slurry, so that the finally obtained catalyst carrier has the advantages of increase of the number of effective acidic sites of an acidic component and more uniform dispersion of the acidic components; the catalyst prepared by the carrier has the advantages of high activity, high selectivity of a target product and the like.

The invention discloses a method for preparing a micro-mesoporous carbon anode material from an amino acid modified metallic organic framework and application. The method comprises steps of synthesizing the amino acid modified metallic organic framework, pretreating the metallic organic framework material, carrying out a carbonization reaction, and the like, the synthesized metallic organic framework is washed and dried, and high-temperature carbonization treatment is carried out directly, and then a nitrogen doped porous carbon material of a rich micro-mesoporous structure is prepared. Compared with a pure metallic organic framework-based carbon material, the carbon electrode material prepared by using the method has a large specific surface area, a large aperture distribution range and alarge pore volume, and has high activity for electro-catalysis oxygen reduction reactions. Meanwhile, the preparation method is simple and easy to control, gentle in condition, easy in raw material obtaining and good in application prospect.

A high-activity chloride-free CuI/Y catalyst consists of an active component CuI and a Y molecular sieve. The catalyst comprises the following component in terms of metals: 5.0-20 wt% of Cu, wherein CuI accounts for 90-100 wt%, Cu accounts for 00-10wt%, and the rest is the Y molecular sieve. The high-activity chloride-free CuI/Y catalyst has the advantages of high CuI content, zero chloride and high activity.

The invention discloses an actinomycete signal peptide for expressing intracellular protein to an extracellular position. The actinomycete signal peptide is named as Kp-SP, and is from a Kocuria sp.3-3 strain; the nucleotide sequence of the actinomycete signal peptide is shown as SEQ ID No.1, and the amino acid sequence is shown as SEQ ID No.7. The invention also discloses application of the signal peptide to the expression of amylase or cellulose by using the built recombinant escherichia coli. The signal peptide has the capability of secreting foreign protein to the extracellular position in a normal expression carrier, so that the protein expression quantity is increased; the enzyme activity is obviously improved; in addition, the foreign protein extracellular secretion capability is also realized in the constitutive expression carrier pBSPPc; an effective path is provided for producing high-activity secretion protein. As a basic gene engineering technology, the invention provides the favorable conditions for the industrial protein production; the protein expression quantity and the enzyme activity are enhanced; the separation cost is reduced; great application prospects are realized in the protein industrial production aspect.

The invention discloses a preparation method of a catalyst for synthesizing p-hydroxybenzonitrile. The preparation method comprises the following steps of: 1) adding a phosphorus source to water and stirring and dissolving at 50 DEG C to 85 DEG C, and adding sieved calcium source in batches; after filtering and washing, drying at 120 DEG C to 180 DEG C, and pulverizing and sieving to obtain a precursor powder; 2) adding an auxiliary agent to the sieved precursor powder and mixing uniformly, adding deionized water, conducting extrusion molding, to obtain a shaped catalyst precursor, and dryingto constant weight, wherein mass ratio of the precursor powder to the auxiliary agent to the deionized water is (50 to 75) to (4 to 10) to (24 to 40); 3) placing the shaped catalyst precursor to a muffle furnace, heating at a temperature increase rate of 4 DEG C to 8 DEG C/min to 550 DEG C to 700 DEG C and keeping the temperature for 2 to 5 hours, and synthesizing the catalyst for synthesizing p-hydroxybenzonitrile. The catalyst obtained by the invention is used for the gas-solid phase synthesis of the p-hydroxybenzonitrile and has the advantages of high activity, good selectivity and servicelife equal to or more than 4,000 hours.

The invention relates to high-activity wild grape wine with seeds and a preparation method thereof. The preparation method comprises the steps of preprocessing wild grapes, carrying out split charging, aerobic fermentation and anaerobic fermentation, processing grape seeds, and carrying out post-fermentation, filtration, encapsulation, sealing and after-packaging. According to the high-activity wild grape wine, high-activity anti-oxidation nutrient substances such as resveratrol and organic acid are increased, meanwhile, a deep processing and utilizing scheme is provided for by-products produced during the brewing of grape wine from grape seeds and the like, and the raw material resources are well utilized. On this basis, the specific preparation technological process is detailed, the antioxidant activity of the product and the content contrast of relevant substances are verified by virtue of subsequent detection, and meanwhile, a sensory evaluation result is matched so as to determine an optimal preparation method. The content of active components in the product is increased, meanwhile, the optimal taste and flavor of the product are guaranteed, and the product has multiple superiorities of nutrition, health, delicacy, storage resistance, easiness in production and process and the like.

The invention discloses a highly-conductive carbon material and a low-temperature preparation method thereof. The low-temperature preparation method is characterized in that a precursor rich in terminal alkynyl groups is reacted in a gas atmosphere or a vacuum environment to obtain black solid powder which is the highly-conductive carbon material; the precursor rich in terminal alkynyl groups contains at least three terminal alkynyl groups; and the precursor rich in terminal alkynyl groups has a conjugate structure. The carbon material is obtained through low-temperature chemical synthesis under very mild conditions by using the precursor rich in terminal alkynyl groups through using the high activity characteristic of the alkynyl groups, the preparation efficiency of the low-temperature preparation method is greatly more than that of existing carbon material preparation technologies, and the carbon material obtained through the method has the advantages of good conductivity, good stability and excellent processing performances. The method has the advantages of simple process, low cost, wide application range, facilitation of industrial large-scale production, and facilitation of further promotion of the carbon material to many application fields needing mild conditions.

The invention discloses a ferulic acid derivative as well as a preparation method and application thereof, and belongs to the technical field of medicine research. The target ferulic acid derivative is prepared by acylating chlorination of ferulic acid and further esterification condensation with a serine derivative and lipoic acid condensation product. Wherein the used lipoic acid can eliminate free radicals for accelerating aging and pathopoiesis; the lipoic acid has the characteristics of fat solubility and water solubility, so that the lipoic acid can pass through the whole body, can reach any cell part, and provides comprehensive efficacy for a human body; meanwhile, serine is adopted as a linking part of ferulic acid and lipoic acid, the chiral structure of the serine is utilized, so that the compound has better targeting property, and the serine is a safe substance after in-vivo degradation and has better safety in vivo; the prepared ferulic acid derivative has the characteristics of good nephritis curative effect, high activity, low toxicity to other organs, good druggability and the like.

The invention discloses a preparation method of alumina gel and polyaluminium chloride, and belongs to the technical field of alumina gel and polyaluminium chloride preparation. The invention mainly provides a preparation method of high-activity alumina gel and high-purity, low-energy-consumption and waste-residue-free polyaluminum chloride. The method comprises the following steps: neutralizing an aluminum salt solution or dilute acid with sodium aluminate, potassium aluminate or dilute alkali solution within a certain period of time until the pH value is 4-8 to obtain high-activity alumina gel, and keeping the temperature of the alumina gel and a one-step solution for preparing polyaluminum chloride at 65-95 DEG C for 0.5-2 hours to obtain polyaluminum chloride with the basicity of 90% or below. The alumina gel prepared by the method is high-purity amorphous hydrated alumina, when the polyaluminum chloride is further prepared, the solution is clear and transparent, filter pressing orsedimentation is not needed, no waste residue is generated, the preparation process does not need cooling, the production time is short, the energy consumption is low, and the purity of the finishedproduct polyaluminum chloride is high.

The invention provides a PMMA-aluminum hydroxide-organophosphorus acrylic composite base material and a preparation method thereof. The composite base material comprises aluminum hydroxide ultrafine microspheres subjected to surface hydrophobic modification through a silane coupling agent and a titanate coupling agent and copolymer resin, and the mixing ratio of the aluminum hydroxide ultrafine microspheres subjected to surface hydrophobic modification to the copolymer resin is (21-27):(7-3). In the prior art, aluminum hydroxide powder has high surface activity and large organic matter adsorption capacity, and especially has high adsorption capacity for hydrophilic acrylate copolymer resin; through modification of the aluminum hydroxide powder, the aluminum hydroxide powder shows high hydrophobicity so that 80% or above of aluminum powder can be added into acrylate copolymer resin to prepare an acrylic artificial stone composite material with the low cost and the high flame retardanceand heat resistance; phosphorus-containing acrylate is introduced into acrylic artificial stone resin through a bulk copolymerization method, so that after the novel copolymer resin is composited withthe modified aluminum powder, more excellent flame retardance can be achieved.

The invention discloses a high-activity hyaluronic acid-polypeptide conjugate as well as a preparation method and application thereof. The preparation method of the high-activity hyaluronic acid-polypeptide conjugate comprises the following steps: preparing aldehyde modified hyaluronic acid; the preparation method comprises the following steps: dissolving aldehyde modified hyaluronic acid in a buffer solution, adding auxin and sodium cyanoborohydride, and reacting; ethyl carbazate is added for a reaction; finally, the hyaluronic acid-polypeptide conjugate is obtained. According to the technical scheme, the auxin can be perfectly connected to the hyaluronic acid, and the binding rate is about 70%; the secondary structure of the auxin in the hyaluronic acid-polypeptide conjugate disclosed by the invention is not changed; and in a skin tissue test, the hyaluronic acid-polypeptide conjugate can be effectively transferred to a corium layer.