56results about "Organic-compounds/hydrides/coordination-complexes catalysts" patented technology

The present invention is directed to novel organometallic complexes as catalysts for the reaction of compounds with isocyanate and hydroxyl functional groups to form urethane and/or polyurethane and the process employing such catalysts. More particularly, the present invention is directed to novel complexes of zinc(II) with substituted amidines. These novel catalysts are useful for the production of urethanes and polyurethanes which are important in many industrial applications.

The invention relates to the technical field of photocatalytic materials, and relates to a preparation method and an application of bimetallic photocatalytic functional POM/MOFs. Bimetallic photocatalytic functional POM/MOF target materials with a porous structure are prepared through a hydrothermal synthesis technology or a layered diffusion technology with polyoxometalate POM as a functional group, L as a connection ligand and Cu<2+>, Co<2+> or Fe<2+> in a transition metal salt Tm as nodes, and the target materials POM/MOFs are applied in a functional photocatalytic carbon- carbon coupling reaction. The preparation method has the advantages of simple synthetic steps, easy operation, low energy consumption and high yield, and the obtained functional materials have the advantages of stable chemical properties, and easy large-area popularization and application. The MOF photocatalytic materials have a large specific surface area, have a very good conversion rate and reusability under the irritation of a 18W energy saving lamp when the use amount is 6/1000 of the amount of a substrate, and are suitable for the needs of large-scale industrial production.

The invention relates to esterification catalyst, which is inorganic compound including ionic liquid and inorganic compound with Lewis acid. The cation of the ionic liquid is imidazole or pyridine taken place by C1C15 alkyl, wherein, the substituting group number is one or more, and the anion is BF4<-> or PF6<->; the inorganic compound with Lewis acid is selected from FeCl3, SnCl4, ZnCl2 or Zn (NO32) and so on, and the mol ratio of the inorganic compound with Lewis acid and the ionic liquid is 0.01 to 1.0:1. The catalyst is used for esterification reaction, the selectivity is good, the yield rate of the esterified ester is high, and the service life is long.

The invention provides a method for synthesizing chiral sultam containing hetero atoms by palladium-catalyzed asymmetric hydrogenation, wherein the catalyst is a chiral diphosphine ligand of palladium. The reaction is carried out at a temperature of between 25 and 60 DEG C and at a pressure of 40 atmosphere for 12 hours in solvent of 2, 2, 2-trifluoroethanol. Sulfonyl oxathiazinane heterocycle five-membered cyclic imide is hydrogenated to obtain corresponding chiral sultam containing oxathiazinane heterocycles with enantiomeric which excessively reaches 97 percent; and benzo N-sulfonyl oxathiazinane heterocycle six-membered cyclic imide is hydrogenated to obtain corresponding chiral sultam containing oxathiazinane heterocycles with enantiomeric which excessively reaches 99 percent; and benzo N-sulfonyl benzothiazinane heterocycle six-membered cyclic imide is hydrogenated to obtain corresponding chiral sultam containing benzothiazinane heterocycles with enantiomeric which excessively reaches 98 percent. The method has the advantages of simple and practical operation, high enantiomeric selection and good yield, and the reaction has green atomic economy and is friendly to environment.

An object of the invention is to provide a preparation process of a latent catalyst that can gives a latent catalyst, which can exert an excellent catalytic activity at the time of molding and therefore, can provide a resin composition having good curing property, fluidity and storage stability, in a short time in a high yield without mixing in ionic impurities. The present invention relates to a preparation process of a phosphonium silicate latent catalyst, comprising reacting (A) a proton donor represented by the following formula (1):

[Chemical Formula 1]

HY¹-Z¹-Y²H  (1)

[wherein Y¹ and Y² may be the same or different and each represents a group resulting from a proton donating substituent through release of a proton, Z¹ represents a substituted or unsubstituted organic group which bonds to the proton donating substituents Y¹H and Y²H, and two substituents Y¹ and Y² in the same molecule are capable of bonding to a silicon atom to form a chelate structure], (B) a trialkoxysilane compound and (D) a phosphonium salt compound represented by the following formula (2):

[wherein R¹, R², R³ and R⁴ may be the same or different and each represents an organic group having a substituted or unsubstituted, aromatic or heterocyclic ring or represents a substituted or unsubstituted aliphatic group and X⁻ represents a halide ion, a hydroxide ion or an anion resulting from a proton donating group through release of a proton], wherein the reaction is carried out in the presence of (C) a metal alkoxide compound.

The invention discloses a trivalent copper catalyst and a preparation method thereof and application to hydrochlorination of acetylene. The preparation method of the trivalent copper catalyst comprises the steps that a nitrogen-containing heterocyclic compound and copper salt are added into a trichloromethane solution to mix to obtain a mixed solution A containing a bivalent copper compound; ionicliquid is added into the obtained mixed solution A, and under the action of an oxidant, a mixed solution B containing a trivalent copper compound is obtained; and a porous solid carrier is immersed in the obtained mixed solution B containing the trivalent copper compound for 0.5-5 h, then the treated solid is taken out, and heated and dried under the condition of blue light irradiation, and the trivalent copper catalyst is obtained. The trivalent copper catalyst is used for the reaction of acetylene hydrochlorination to prepare vinyl chloride. The trivalent copper catalyst is prepared by simple operation steps, the stability and activity of the catalyst are improved, the production cost is lowered, and good application prospect is achieved.

The invention relates to a one-step copolymerization method for preparing an efficiently-selective carbon nitride photocatalyst based on energy environment backgrounds, and belongs to the field of carbon material science. The efficiently-selective photocatalyst serves as a simple pathway for acquiring complicated organic oxidation products, converting solar energy into chemical energy and storing the chemical energy, and a support is provided for sustainable utilization of energy, so that a mild and efficient photocatalyst is extremely sought. According to the method, 3, 3', 4, 4'-BTDA (benzophenonetetracarboxylic dianhydride) with long triplet lives is creatively introduced based on melem with a tri-s-triazine structure, conduction and valence band values of carbon nitride are adjusted, the triplet lives are prolonged, so that singlet oxygen is generated, and selective photocatalyst oxidation capacity of the carbon nitride is improved. The carbon nitride photocatalyst prepared by the method does not contain precious metals, is low in cost and simple to operate and solves the problem of application limit of the carbon nitride in the elective photocatalyst oxidation field, and batch production of the photocatalyst can be achieved.

The present invention provides a photocatalyst film that includes a support; an organic-inorganic composite layer containing, in a graft polymer layer including a graft polymer chain directly bonded to the surface of the support, a crosslinked structure formed by hydrolysis and condensation polymerization of an alkoxide of an element selected from Si, Ti, Zr or Al; and a photocatalytically active layer, in this order, and a method for producing the same.

The invention discloses a lithium air battery catalyst based on metal organic frameworks (MOFs), and a method for preparing the lithium air battery catalyst. The catalyst consists of a transition metal complex and MOFs carriers, wherein the transition metal complex is obtained by reacting cobalt salt or manganese salt with a nitrogen-containing ligand. After being applied to a lithium air battery, the catalyst is high in catalytic activity and high in stability. By using the low-cost nitrogen-containing ligand as a raw material, the catalyst has the advantages of simple preparation process, low preparation cost and the like.

The invention relates to a preparation method and application of a porous biomass acidic solid material. The preparation method is characterized by comprising the following steps: adding a lignosulfonate water solution having a certain concentration, an aldehyde compound, a template agent and a catalyst into a reaction vessel according to a certain ratio, uniformly mixing, and reacting at 50-220 DEG C for 2-120 hours; drying, grinding, removing the template, performing acid treatment, and washing to neutral; and drying to obtain the material. The porous material structurally contains multiple surface acidic groups such as sulfonic groups, carboxyl groups and hydroxyl groups, has a high surface distribution density and is a favorable porous acidic solid material. The material is used for esterification reaction, and the esterification yield is up to 85% or above. The material provided by the invention has the advantages of abundant raw material sources, controllable structure, simple preparation process and the like.

The invention relates to a preparation method of rice hull carbon based solid sulfoacid. The preparation method of the rice hull carbon based solid sulfoacid which can be applied to various acid catalyzed reactions. The preparation method of the rice hull carbon based solid sulfoacid includes the following steps: mixing rice hulls with concentrated sulfuric acid, heating and stirring the mixture, conducting partial carbonization, obtaining solid materials, filtering, water washing and alcohol washing, and obtaining the carbon based solid sulfoacid. The sulfoacid preparation method of the rice hull carbon based solid is simple in operation, short in reaction time, high in density of obtained carbon based solid sulfoacid and capable of bring convenience for industrial implementation and the like, and providing a novel method.

A process for preparing an amine by reacting a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group of ammonia and primary and secondary amines, in the presence of a supported copper-, nickel- and cobalt-containing catalyst, wherein the catalytically active material of the catalyst, before the reduction thereof with hydrogen, comprises oxygen compounds of aluminum, of copper, of nickel, of cobalt and of tin, and in the range from 0.2 to 5.0% by weight of oxygen compounds of yttrium, of lanthanum, of cerium and/or of hafnium, each calculated as Y₂O₃, La₂O₃, Ce₂O₃ and Hf₂O₃ respectively, and catalysts as defined above.

The invention relates to a prussian blue analogue nanosheet array material and a water electrolysis application thereof, wherein a preparation method of the material comprises the following steps: 1)pretreating foamed nickel to serve as a matrix; 2) mixing a Co(NO3)2.6H2O solution with a Na2Fe(CN)5NO.H2O solution, and then stirring at room temperature until the solution is turbid to obtain a mixed solution; and 3) putting the matrix into the mixed solution, carrying out standing reaction for 2-48 h, and carrying out post-treatment to obtain the prussian blue analogue nanosheet array material.The material is used as a catalyst for water electrolysis reaction. Compared with the prior art, the prepared ultrathin prussian blue analogue nanosheet array material is simple in preparation process and low in cost, can be used for carrying out stable and efficient hydrogen evolution reaction, oxygen evolution reaction and total water decomposition under different current densities, and has huge potential value in large-scale hydrogen production application.

A process for producing a high surface area iron material, comprising predominantly low crystalline iron oxides, starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m²/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.

The invention discloses a preparation method and application of alkyl tetrahydronaphthalene. The alkyl tetrahydronaphthalene comprises one or more alkyl substituents which are the same as one another, and the method comprises the following steps: respectively carrying out alkylation reaction on tetrahydronaphthalene and olefins with different carbon chain lengths by adopting an ionic liquid catalyst; and carrying out standing layering, water washing, reduced pressure distillation and the like on the reaction product to obtain an alkyl tetrahydronaphthalene product, and carrying out segmented reduced pressure distillation on the product to finally obtain the alkyl tetrahydronaphthalene product composed of different side chain numbers. Alkyl tetrahydronaphthalene prepared by the method is used for base oil after being adsorbed and decolored, and has lower viscosity, lower pour point, better thermal stability and excellent additive solubility, and products of different components can be applied to the fields of different oil products according to adjustable properties of the products.

The invention provided a catalyst loaded with ionic liquid and a preparation method and application of the catalyst. According to the catalyst, the dispersion effect of metal in a carbide carrier is better, the catalytic activity is higher, the stability is better, ionic liquid is stabilized on the surface of the carrier through silicon hydroxyl, and is not prone to being loosen from the surface of the carrier, the metal is stabilized on the outer surface layer of the catalyst through the form of coordination with the ionic liquid, the influence of mass transfer is reduced, meanwhile the dispersion of the metal is increased, an external static electric filed is introduced into the preparation of the metal-based catalyst loaded with the ionic liquid for the first time, the enrichment of a metal active center on the surface layer of the ionic liquid is promoted, because the metal active center of the catalyst is distributed on the surface layer of the ionic liquid, the influence of substrate diffusion is reduced, and under the evaluated reaction conditions, the induction period of the catalyst is eliminated.

The invention relates to a method for preparing benzene sulfonamide compounds. In the method, a ternary catalyzing system of ethyltriphenylphosphonium bromide-silver compounds-porphyrin is adopted; the method for preparing N-tert-Butylbenzenesulfenamide from the reaction of methyl tertiary butyl ether with a weak reactivity and benzene sulfonamide compounds is realized; remarkably technical effects of preferable reaction temperature, high yield and good universality are achieved; moreover, as appropriate additives are added in the reaction, the collision between molecules is promoted and the reaction time is shortened; the method has favorable industrialization perspective and industrialized production value.

The invention belongs to the technical field of novel functional material design and preparation and provides a preparation method and application of a MnO2/Cu-Al-BTC ternary metal-organic framework material. The preparation method is characterized in that a Cu-Al precursor material excellent in physical and chemical properties is synthesized by using a microwave-assisted heating-impregnation combined method is as the synthesizing method, selecting the mixed liquid of benzoic acid and acetic acid as the stabilizer and using di-mu-hydroxo-bis[(N,N,N',N'-tetramethylethylenediamine)copper(II)] chloride and aluminum 9-octadecenylacetoacetate-diisopropoxide as the metal salt, and then FMES and OP-6 are selected as the molecule inducer to induce MnO2 to enter the framework structure of the Cu-Alprecursor material to prepare a MnO2/Cu-Al-BTC catalyst with ternary metal active sites. The denitrification efficiency of the prepared material reaches 90-96%, and the structural stability of the material can be kept until the temperature reaches 340 DEG C.