62results about How to "Easy for industrial scale-up production" patented technology

The invention relates to a preparation method of a catalyst for the selective hydrogenation of alkyne and alkadiene. A carrier of the catalyst is a compound of 30-99% of aluminum oxide, 1-50% of titanium oxide, 1-30% of magnetism oxide and 1-40% of zinc oxide based on the weight of the carrier of the catalyst as 100%; meanwhile, an alcohol reagent and an alkali metal or an alkaline-earth metal are used as modifying reagents; the preparation method is an acidity sol mixed kneading molding method; the active components of the catalyst comprise three or more of palladium, gold, silver, bismuth, cerium, lanthanum, tin and antimony, and a loaded solution of the active components is subjected to polymerization; the carrier of the catalyst prepared by the method has relatively low acid content; and the prepared catalyst shows up relatively appropriate reaction activity in the selective hydrogenation reaction of the alkyne and the alkadiene and has relatively good hydrogenation selectivity, relatively strong green oil generation resistance and relatively low palladium wastage rate.

The invention discloses a method for preparing progesterone and derivatives thereof. A compound 1 serves as a starting material, and through an oxidation reaction and a rearrangement reaction, the progesterone and derivatives thereof, namely, compounds 3 are obtained, wherein the reaction formula is defined in the description. By means of the method, the finished product progesterone and derivatives thereof are obtained with the total yield being 75wt% or above; the method is low in cost, environmentally friendly and suitable for industrial production.

The present invention belongs to the field of the preparation of palladium catalyst, and is especially supported palladium catalyst and its preparation process and application. The supported palladium catalyst is noble metal palladium supported onto nanometer alumina fiber carrier and has the supported amount of palladium as the active component in 0.1-1 wt%. The nanometer alumina fiber carrier is gamma-alumina fiber, and the noble metal palladium is supported onto the nanometer alumina fiber carrier through equal volume soaking process. The high dispersive supported palladium catalyst is used in hydrogenating anthraquinone to prepare hydrogen peroxide solution, has high hydrogenating effect and mild reaction condition, and suitable for industrial production.

The invention relates to a 5, 5 '-bistetrazole-1, 1'-dioxo hydroxylammonium salt synthetic method, and belongs to organic synthesis technical field. According to the method, glyoxal is used as a raw material, and TKX-50 is obtained by changing of intermediate raw materials, a reaction solvent and technological conditions; the second step is direct preparation of diazido glyoxime by use of one pot method, reaction conditions are mild, the intermediate links are reduced, and the product yield is improved. The third step is direct introduction of HCl gas for preparation of BTO without separation of the high sensitivity diazido glyoxime, BTO salt can be obtained by use of an alkaline solution, later period control of TKX-50 purity is facilitated, product quality can be improved, and the whole reaction overall yield is more than 72%. According to the method, a lot of intermediate operation links can be reduced, the product yield is improved, and the method helps to achieve industrial production.

The invention relates to a technology method dimethyl purple urea acid catalyst hydrogenation reaction that uses inorganic oxygen as carrier, uses load type NiB, NiCoB amorphous alloy as catalyst and dimethyl purple urea acid hydrogenation reacting to make 1, 3-dimethyl-4-amino group-5-formamido urea. The invention has good catalyst activity in dimethyl purple urea acid hydrogenation reacting, and has no influent by high temperature. It is save, no pollution, mild reacting condition, and simple technology.

The invention discloses a preparation method of a supported medium and high temperature denitration catalyst. The method comprises the following steps: 1, dissolving a soluble active metal component precursor salt and a soluble auxiliary metal component precursor salt into deionized water to obtain a transparent impregnation solution; 2, impregnating a molecular sieve carrier for 6h-24h, filtering, drying at temperature of 80-120 DEG C for 12h-24h to obtain a catalyst precursor; 3, putting the catalyst precursor in a heat treatment furnace, heating to 300 DEG C-400 DEG C, calcining while introduction of air for 1h-3h, heating up to 600-800 DEG C, calcining for 2h-6h, and cooling to obtain the supported medium and high temperature catalyst. The supported medium and high temperature denitration catalyst prepared by the method has high strength, is not easy to pulverize, has long service life, and has low catalyst bulk density. The catalyst has a NO conversion rate of 85% or more at a suitable application temperature of 300 to 500 DEG C.

The invention discloses a heat-conducting adhesive containing graphene as well as a preparation method and an application of the heat-conducting adhesive, and belongs to the technical field of new materials and applications of the new materials. The graphene composite heat-conducting adhesive material is prepared from graphene and conventional packing used cooperatively as heat-conducting packingas well as acrylic resin and other auxiliaries as a matrix with a simple process. Graphene and the conventional packing in the composite material are uniformly dispersed, the characteristics of high heat conductivity of graphene and massive filling capacity of the conventional packing are fully played, the prepared heat-conducting adhesive has properties remarkably better than those of a traditional heat-conducting adhesive, and heat-dissipating and cooling effects of electronic devices can be remarkably improved. The graphene composite heat-conducting adhesive adopts a simple process, can realize large-scale industrial production and can be taken as a novel efficient heat-conducting interface material to be applied to heat dissipation of electronic equipment independently or by cooperation with the base.

The invention relates to a method for modifying silicon dioxide aerogel. The method of the invention is characterized in that the nature of the azeotropy of C4 to C10 aliphatic alcohols and water under the constant temperature is utilized for removing free water in the silicon dioxide wet gel; the esterification reaction of alcohol and hydroxyl on the surface of silicon dioxide is utilized for the surface finishing and modification of the silicon dioxide aerogel so as to obtain water repellent products; wherein, the mass ratio of the silicon dioxide, the water, the a lcohol and a catalyst is 1: (8.0 to 9.5): (10 to 20): (0.01 to 0.05) and the catalyst is alkyl-sulfuric acid, alkyl sulfate or alkyl sulphate ion, aryl sulfonic acid, aryl-sulphonate or aryl-sulphonate ion. The invention also relates to the silicon dioxide aerogel obtained by the method and the surface of the silicon dioxide aerogel is dehydrated and contains aliphatic groups.

The present invention provides an attapulgite/cerium-zirconium solid solution composite material loaded Cu-Zn-Fe-based catalyst, a preparation method and applications of the catalyst in preparation of C1-C5 low carbon alcohols through CO2 hydrogenation. According to the present invention, the catalyst adopts an attapulgite/cerium-zirconium solid solution composite material as a carrier, and the attapulgite/cerium-zirconium solid solution composite material preparation method comprises: carrying out pressurization acid activation to prepare acid-modified attapulgite, and then adopting a co-current flow co-precipitation method to obtain the attapulgite/cerium-zirconium solid solution composite material, wherein the total loading amount of the catalysis activity component is 25-80 wt%, and the catalyst carrier accounts for 20-75 wt%; and the catalyst uses the composite material formed from the natural nanometer material attapulgite doped cerium-zirconium solid solution having characteristics of rich resource and low price as the carrier, the cost is low, and the preparation method is simple, is easily subjected to industrial scale production, and is suitable for high-value conversion of bio-butanol fermentation exhaust gas and other low H/C ratio raw gases.

The invention relates to a safe and environment-friendly type abrasion-resistant self-cleaning latex paint and a preparation method thereof. The latex paint is prepared from the following components in parts by weight: 390 to 420 parts of emulsion, 20 to 30 parts of film forming additive, 5 to 50 parts of silicon sol, 2 to 4 parts of multifunctional ammine additive, 5 to 10 parts of hydrophobic agent, 2 to 5 parts of wetting agent, 7 to 8 parts of dispersant, 2 to 5 parts of defoaming agent, 1 to 3 parts of cellulose, 2 to 4 parts of thickener, 240 to 260 parts of inorganic filler, 250 to 270 parts of water, 2 to 4 parts of preservative, 1 to 2 parts of anti-mildewing agent and 15 to 20 parts of propylene glycol. Compared with the prior art, the latex paint has the advantages that the compactness of a paint film is good, the hardness is high, the abrasion-resistant property is good, static electricity is not produced, and various dust in air is difficult to adhere; the preparation method is simple, the controllability is good, the green and environment-friendly effect is achieved, the technical defect of poor dirt resistance in a latex paint is effectively overcome, the service life of the latex paint is prolonged, the economy is good, the industrialized expanding production is easy, and the application prospect is good.

The invention discloses a heat conductive interface material for heat dissipation of electronic equipment and belongs to the technical field of new materials. Through simple process, graphene and common filler are cooperated to form heat conductive filler; then with acrylic resin and other additives being a substrate, a graphene composite heat conductive adhesive material is prepared and serves asthe heat conductive interface material. In the heat conductive interface material, the graphene and the common filler are uniformly dispersed, so that the characters that the graphene has high heat conductivity and the common filler achieves large filling quantity are fully achieved, and the performances of the heat conductive adhesive are better than those of a conventional heat conductive adhesive. The product significantly improves heat dissipation and cooling effect on electronic devices. The graphene composite heat conductive adhesive is simple in preparation method and allows large-scale industrial production, and can be applied independently or matched with a substrate as a novel high-effective heat conductive interface material for heat dissipation of electronic equipment.

The invention provides a catalytic synthesis method of an N-substituted ethanol amine compound. The synthesis method includes the steps that an epoxy compound shown by the formula (II) (please see the specification), an amine compound shown by the formula (III) (please see the specification) and a metal-heteroatom-modified MCM-41 molecular-sieve-mesoporous catalyst are mixed and reacted for 40-100 min under the condition that the reaction temperature ranges from 60 DEG C to 190 DEG C, and the reaction pressure ranges from 1 MPa to 3.5 MPa, the catalyst in the reaction liquid is filtered out, and the N-substituted ethanol amine compound is obtained. According to the catalytic synthesis method, the catalyst is easy to prepare, large in specific surface area and long in service life, has abundant acidity active sites, and has the quite good catalytic performance in the process of synthesizing N-substituted ethanol amine through amine and an epoxy compound with the liquid phase method; the conversion rate of the amine is high, the selectivity of the N-substituted ethanol amine is good, the reaction condition is mild, and industry enlargement production is facilitated.

The invention discloses a low Si/Al ratio ZSM-48 molecular sieve preparation method, which comprises: (1) treating raw materials to obtain a precursor gel; (2) carrying out hydrothermal crystallization on the precursor gel to obtain a sample; and (3) treating the sample to obtain a ZSM-48 molecular sieve, wherein the raw materials comprise a silicon source, an alkali source, a structure-directingagent (SDA), an aluminum source, an acid and water, the structure-directing agent has a structure represented by a formula I (CH3)3N<+>RX (formula I), R is C2-6 alkenyl or C2-5 alkyl, and X is selected from halogen or hydroxyl.

The invention discloses a synthesis method of an MFI molecular sieve nanosheet. The method takes a small amount of template agent, silicon source and aluminum source as raw materials for hydrothermal synthesis, and is characterized by comprising the following steps: firstly, uniformly stirring the template agent, the silicon source and a certain amount of water, then selectively adding the aluminum source, adjusting the pH value of the system, stirring and pre-crystallizing for 1-50 hours at 40-100 DEG C, and then crystallizing for 1-10 days at 80-150 DEG C; and after the crystallization is finished, cooling the reaction kettle to room temperature, and then carrying out suction filtration/centrifugation, washing and drying on the product. According to the method, the synthesis temperature is low, the synthesis pressure is low, a fluorine-containing reagent does not need to be used, the yield exceeds 80%, and the thickness of the nanosheet can be regulated and controlled through the pH value of the system and the dosage of a template agent. The synthesized MFI molecular sieve nanosheet is high in crystallinity and controllable in thickness, more synthesis energy consumption is saved under the low-temperature and low-pressure conditions, industrial scale-up production is facilitated, and the MFI molecular sieve nanosheet has a good industrial popularization prospect.