422results about How to "Easy industrial scale-up" patented technology

The invention relates to a method for preparing alcohols by selectively hydrogenating aldehydes, belonging to hydrogenation technologies. In order to meet the requirements of people on two aspects, i.e. the improving of the selectivity on preparing the alcohols by hydrogenating the aldehydes and the prolonging of the service life of a catalyst currently, the method proposes that: the aldehydes are taken as raw materials; the reaction temperature is 20-300 DEG C; the reaction pressure is 0.1-7.0 MPa; the weight space velocity of the aldehydes is 0.02-20 h<-1>; the aldehydes and hydrogen gas are in contact with a hydrogenation catalyst; and the aldehydes are produced into corresponding alcohols through selectively hydrogenating. In the method, the hydrogenation catalyst comprises a carrier, a metal active component and silane groups; the silane groups are grafted through a silylanizing treatment; and the content of the silane groups in the total weight of the catalyst is 0.05 wt% to 25 wt%. Compared with the existing method, with the adoption of the catalyst in the method provided by the invention, the selectivity is high, the amount of byproducts, such as ethers, esters and acetals is greatly lowered; and meanwhile, the generation amount of carbon deposit is little, so that the catalyst has longer service life.

The invention discloses a solid-phase synthetic method of a highly ordered mesoporous carbon material. The solid-phase synthetic method comprises the following steps: 1) mixing a structure-directing agent with a high molecular monomer used as a carbon source, and grinding for 5-180 min at 10-100 DEG C; 2), heating for 0.5-120 h at 40-380 DEG C; 3) under the protection of inert gases, rising the temperature to 500-2,100 DEG C at the temperature rising speed of 1-40 DEG C/min, and roasting for 2-10 h at high temperature. The functionalization mesoporous carbon material is synthetized through the organic-organic self-assembly between the high molecular monomer and the structure-directing agent and between the low polymer of the high molecular monomer and the structure-directing agent, and the mechanical grinding. The solid-phase synthetic method is simple to operate, efficient, and low in cost, and the prepared mesoporous carbon material has a highly ordered mesoporous channel, high specific surface area (500-2,500 m<2>/g and large pore volume (pore diameter of 2.5-20 nm and pore volume of 0.1-2.5 cm <3>/g).

The invention relates to a method for preparing a minor-diameter carbon nanotube array on the surface of a flaky material, which belongs to the technical fields of nanometer materials and the preparation process thereof. The method comprises the following steps: the nanoparticles including one or more of Fe, Co, Ni, Cu and Mo (active metals) are dispersed on various flaky materials such as a graphitic sheet, magnesia or layered double hydroxide according to the density (10<8>-10<12> grains/cm<2>), then the chemical vapor deposition is performed, and finally, the carbon nanotube array grows onthe flaky surface. The diameter of the nanotube is less than 20 nm in the array. The method is easy to operate, realizes the mass production of the carbon nanotube array and promotes the industrial application.

The invention discloses a copper based catalyst used for hydrogenating carbon dioxide to synthesize methanol, and a preparation method and an application thereof. The preparation method of the catalyst comprises the following steps: 1, processing a zinc salt, an aluminum salt, a zirconium salt and a stabilizer to prepare a first solution, or processing the zinc salt, the aluminum salt and the zirconium salt to prepare a second solution; 2, processing carbonate and hydroxide to prepare a third solution; 3, processing a copper salt to prepare a fourth solution; 4, processing the first solution and the third solution to form a first precipitation solution, or processing the second solution and the third solution to form a second precipitation solution; 5, adding the fourth solution to the first precipitation solution to form a third precipitation solution or adding the fourth solution to the second precipitation solution to form a fourth precipitation solution, ageing after Cu in the precipitation solution precipitates, and washing; and 6, drying, and calcining. The catalyst contains 30-50% of Cu, 20-40% of Zn, 10-20% of Al, and 5-20% of Zr. The catalyst is used for a reaction for hydrogenating carbon dioxide to synthesize methanol.

The invention provides a method for preparing carbon nano pipe arrays on the inner surface of a particle, belonging to the technical field of novel material and novel material preparation. In the method, the active metal components are loaded on the inner surface of the particle, and subjected to reduction or thermal decomposition to obtain a loaded type particle inner surface containing metal nano particles; the loaded type particle inner surface is subjected to chemical vapor deposition, and carbon nano pipe arrays grow up between the particle inner surfaces. By the physical or chemical separation, the carbon nano pipe arrays are separated from the particles, and the carbon nano pipe arrays with high purity are obtained, wherein in the method, the reaction speed and the operational conditions are controlled, the bed density of a reactor is kept between 10 and 1000kg/m<3>, and the carbon nano pipes/particles are in flowing/ fluidized states. The method has the advantages of being easily operated, realizing the mass production of the carbon nano pipe arrays and promoting the industrialized application of the carbon nano pipe arrays.

The invention discloses an unsaturated hydrocarbon hydrogenation catalyst, belonging to the technical field of hydrogenation catalysts. For meeting the requirements of water resistance and carbon deposition resistance on the unsaturated hydrocarbon hydrogenation catalyst, the catalyst contains a carrier, a metal active ingredient loaded on the carrier and a silane group, the silane group on the catalyst is grafted by performing silylanizing treatment, and the content of the silane group is 0.05-25 percent by weight; and the carrier is made of a porous material of which the specific surface area is 2-300 m<2>/g, the pore volume is 0.05-1.2 ml/g, the average pore diameter is 9-150 nanometers, over 50 percent of pore volume is included in pores with pore diameters being greater than 9 nanometers, and the pore volume of pores with pore diameters being smaller than 5 nanometers is less than 25 percent. Compared with the conventional catalyst, the catalyst disclosed by the invention has theadvantages of high water resistance, small amount of deposited carbon, longer service life and great reduction in the powder removal phenomenon of the catalyst when the catalyst is applied to unsaturated hydrocarbon hydrogenation.

The invention discloses a catalyst for synthesising methanol by hydrogenation of carbon dioxide. The catalyst is composed of oxides with the following molar ratio based on metal: 20-50% of La, 0-10% of M, 15-35% of Cu, and 2-15% of Zn, wherein M is one or more of Zr, Y, K, Ag, Ce, Pd, Mn, Mg, Fe, Co, Ni or Cr. The catalyst disclosed by the invention has the advantages that preparation is simple, operation is easy, catalyst performance repeatability is good, industrial amplification is easy to realize, and reaction conversion rate and reaction selectivity are high.

The invention discloses an antibiotic pharmaceutical wastewater processing method and an antibiotic pharmaceutical wastewater processing device, and belongs to a wastewater processing technology. According to the invention, a porous filtering membrane is specifically arranged between an anion-exchange membrane and a cation-exchange membrane of an electrodialyzer membrane reactor, such that electrodialysis is intrinsically coupled with a membrane filtering process. Macromolecular substances such as mycelia, proteins, and colloidal are retained with a sieving effect of the porous filtering membrane, such that ion-exchange membrane surface pollution is reduced. Also, under an effect of a direct current electric field, with a selective permeability of the ion-exchange membranes upon charged ions, separation and concentration of anions and cations, and charged antibiotic ions are realized. With an adopted external direct current electric field, a specific solute can be effectively prevented from forming membrane pollution on the surface of the porous filtering membrane, such that the processing process can be safely and stably operated. With the method and the device, antibiotic wastewater processing system investment and operation cost can be greatly reduced; and salt ions and residual antibiotics can be highly efficiently recovered from pharmaceutical wastewater. The method and the device have important application values in antibiotic production and wastewater processing.

The invention relates to a comprehensive development and utilization technology of cereals, especially oats and particularly relates to a whole-oat dietary beverage and a method for preparing the whole-oat dietary beverage by virtue of an enzyme preparation. The whole-oat dietary beverage is a beverage prepared by mixing oat grains or oat powder with water to obtain oat pulp and hydrolyzing the oat pulp through amylase and protease. The process of hydrolyzing the oat pulp through the amylase and the protease is finished in one step. The beverage is good in flavor and the production method of the beverage is easy to implement industrially.

The invention discloses a preparation method of a molecular sieve catalyst. The preparation method is characterized in that a molecular sieve with a crystallized aluminosilicate structure is subjected to acid pickling treatment and surface silanization treatment. With the method, the pore structure and the acid property of the molecular sieve can be effectively adjusted; and when used for converting methanol and dimethyl ether into gasoline components, the invention is favored to improve the selectivity of the gasoline components in the process of converting into hydrocarbon reactions.

The invention discloses applications of carbonyl reductase being as a catalyst in the preparation of chiral alcohol by asymmetric reduction of a prochiral carbonyl compound, and a gene, protein and a mutant of the carbonyl reductase. The invention also provides a recombinant expression vector and a recombinant expression transformant containing the gene of the carbonyl reductase. When the carbonyl reductase disclosed by the invention is utilized for catalyzing the asymmetric reduction reaction of the prochiral carbonyl compound, the reaction conditions of the asymmetric reduction are moderate, the operation process is simple and convenient, and the amplification is easy; and the chiral alcohol product prepared by the asymmetric reduction reaction is high in concentration and optical purity. Therefore, the carbonyl reductase has a good industrial application and development prospect in the preparation of the optically pure chiral alcohol.

The invention discloses a method for producing an alcohol by hydrogenizing a ketone or producing a ketone by dehydrogenizing an alcohol. In order to meet the two requirements that the selectivity of the reaction for producing the alcohol by hydrogenizing the ketone or producing the ketone by dehydrogenizing the alcohol can be increased and the service life of a catalyst can be prolonged, the ketone or alcohol is used as a raw material to contact a hydrogenation catalyst in a hydrogen atmosphere, and catalytic conversion is performed to obtain the corresponding alcohol or ketone, wherein the catalyst comprises a carrier, a metal active component and a silane group, the metal active component is one or more of nickel, cobalt and copper, the silane group of the catalyst is grafted through silylation treatment and the silane group accounts for 0.05wt%-25wt% of the total weight of the catalyst. Compared with the existing catalyst, the catalyst has high selectivity; the yield of by-products, namely ether, olefin, alkane and ketal is greatly reduced; and the amount of deposited carbon is low and the catalyst has longer service life.

A process for synthesizing methyl aminoformate includes the catalytic reaction between methanol, urea and catalyst at 120-200 deg.C, under 0.1-3 MPa for 0.5-20 hr and condensing and recovering ammonia gas. Its advantages are low cost and high selectivity to product.

The invention discloses a new nitrilase and gene thereof, a recombinant expression vector and a recombinant expression transformant containing the gene, a method for preparing the recombinant nitrilase or microbial cell containing the recombinant nitrilase by use of the recombinant expression transformant, and application of the microbial cell in dehydrating ortho-chlorine mandelonitrile or other analogues and producing chiral ortho-chlorine mandelonitrile or other analogues. The recombinant nitrilase disclosed by the invention comes from Labrenzia aggregate and can be used as a catalyst for dehydrating and splitting ortho-chlorine mandelonitrile or other analogues; and the recombinant nitrilase has the advantages of high catalysis efficiency, strong enantioselectivity, mild reaction conditions, environmental friendliness and the like.

A uniform phase-distributing apparatus in the liquid-contained multi-phase fluidizing system where the density of solid phase is higher than that of liquid phase features that the material feeding inlet is arranged on the bottom of case, the sleeve pipe structure consisting of at least two nested pipes is arranged on the top of case, and the predistributor and master distributor are used. Its advantage is stable fluidizing state.

The present invention relates to an iron-copper base catalyst synthesizing mixture of lower alcohols. In weight percentage, the iron-copper base catalyst consists of 20 percent to 60 percent of Cu, 15 percent to 60 percent of Fe, 0.4 percent to 20 percent of Mn, 0.4 percent to 30 percent of Zn and 0 percent to 5 percent of MA. The catalyst is prepared by a coprecipitation method. The iron-copper base catalyst has the advantages of simple preparation, easy operation, good reaction performance repeatability of the catalyst, realizing industrial amplification easily, good stability and high total alcohol selectivity.

The invention provides an extraction device and method. A mixed settler extractor comprises a mixing chamber, an organic liquid film generator, a gas-liquid separation device and a liquid-liquid coalescence separation device. The mixing chamber is provided with a heavy phase input port and a first heavy phase discharge port. The organic liquid film generator is connected with the mixing chamber and provided with a light phase input port and a gas inlet. The gas-liquid separation device is connected with the mixing chamber. The liquid-liquid coalescence separation device is connected with the gas-liquid separation device and provided with a liquid inlet, a first light phase discharge port and a second heavy phase discharge port. The extraction device can be provided with no clarifying chamber, the integrated structure of the mixing chamber and the clarifying chamber is well achieved, the problem of heavy phase liquid distribution uniformity of a mixing chamber and the problem about light phase, heavy phase and gas phase separation of the mixing chamber are solved, the occupied area is small, energy consumption is low, a high-flow water solution containing a to-be-separated target object can be treated, and back-mixing of a high-position extraction tower can be relieved.

The invention relates to a regeneration method of copper, ruthenium, cobalt, nickel, palladium and platinum-based metal catalysts. In order to reduce the carbon deposition rate of a regenerated catalyst and prolong the service life of the regenerated catalyst, the invention provides a method. The method comprises the following steps: removing deposited carbon of the catalyst, activating and carrying out silanization treatment. Compared with the existing catalyst regeneration method, the method has the advantages that the yield of target products (the obtained catalyst) is high, and the amountof byproducts generated due to nonmetal catalysis is greatly reduced; the amount of carbon generated on the surface of the catalyst is low, and the catalyst has longer service life; and the influenceof the water content on the catalyst is reduced. The regeneration method is simple to operate, and has lower cost increase compared with that in the prior art.

The invention provides a solid phase extraction method for extracting total astaxanthin from haematococcus pluvialis, comprising the following steps of: (1) solid extraction: uniformly mixing haematococcus pluvialis with silica gel at the weight ratio of 1:1-5:1, adding 1-5mL of methanol, 10-20mL of petroleum ether and 1-5mL of methylene chloride into 10g of haematococcus pluvialis, stirring and extracting for 0.1-1h, and putting the extracted mixture into a chromatography column; (2) elution: carrying out elution by the use of methanol and collecting a red eluant part; and (3) condensation: carrying out underpressure distillation on the red eluant part to obtain a dark red astaxanthin oily liquid. The solid extraction method provided by the invention has advantages of simple operation step, short time, high recovery rate, low consumption of the organic solvent, little environmental pollution and low production cost, and is easy for industrial scale-up.