2033 results about "Metal catalyst" patented technology

The invention discloses a low-density low-viscosity polyurethane pouring sealant containing plastic microspheres and a preparation method thereof. The pouring sealant comprises a component A and a component B, the component A comprises the following components in parts by weight: 25-40 parts of castor oil polyol and 9-24 parts of modified castor oil polyol containing a benzene ring structure; 15 to 22 parts of polyester polyol; 10 to 17 parts of plastic microspheres; 12-16 parts of a liquid flame retardant; 0.2 to 0.3 part of an amine catalyst; 0.3 to 0.4 part of a metal catalyst; 0.1 to 0.4 part of a coupling agent; 0.1 to 0.4 part of a defoaming agent; 2-6 parts of a dewatering agent; wherein the ester polyol is Zibo charge beauty CM-1830 polyester polyol. The two-component polyurethane pouring sealant with low viscosity, low density and better mechanical property is prepared by selecting the polyester polyol in the component A and selecting and proportioning other components.

The invention discloses a preparation method of a small-size defective cerium-based MOFs supported metal catalyst for hydrogenation, and belongs to a preparation technology of a nano composite catalytic material. The preparation method comprises the following steps: in a cerium-based MOFs synthesis process, introducing a proper amount of monocarboxylic acid as a regulator to synthesize a cerium-based MOFs carrier with adjustable defects and size, then loading a metal active component to the cerium-based MOFs carrier, and combining adjustment of reduction conditions to prepare the cerium-based MOFs loaded metal composite catalyst with small-size defects for DCPD hydrogenation. The defects and the size of the cerium-based MOFs carrier are effectively regulated and controlled through the monocarboxylic acid regulator, controllable regulation of the electronic state, the size and the catalytic activity of the loaded metal active component can be achieved by combining regulation and control of the reduction condition of the loaded metal nanoparticle active component, the process is simple, parameters are controllable, the period is short, and the method is suitable for DCPD hydrogenation large-scale production.

The invention discloses a highly active graphite felt for vanadium battery and a preparation method thereof, and belongs to the technical field of all-vanadium liquid flow battery electrodes. The method comprises the following steps: electrodepositing a layer of polymer on the graphite felt, then hydrothermally loading metal molybdenum, chelating the metal molybdenum with phytic acid, and finally pyrolyzing at high temperature to obtain a graphite felt loaded with an organic skeleton-metal oxide-organic skeleton hierarchical structure. The hierarchical structure is not only conducive to increasing the specific surface area and active sites of the graphite felt, but also can protect the metal catalyst from falling off or being consumed under long-term catalytic reaction and electrolyte flushing.

The invention belongs to the field of catalyst preparation and compound synthesis, and particularly relates to a composite metal catalyst, a preparation method and application of the composite metal catalyst in co-production of diethylenetriamine and piperazine. The composite metal catalyst consists of three parts, namely a main active component, an auxiliary active component and a carrier, the main active component is at least any one of Ni and Cu, the auxiliary active component is at least any one of Mg, Cr, Mn, Co, Sr, La and Ba, and the carrier is Al2O3. The invention also provides a method for co-production of piperazine from diethylenetriamine by using the composite metal catalyst. By adopting the method disclosed by the invention, the coproduction of the piperazine with high added value in the continuous synthesis process of the diethylenetriamine can be realized.

The invention provides a composite noble metal catalyst as well as a preparation method and application thereof, and relates to the technical field of proton exchange membrane electrolyzed water. The composite noble metal catalyst comprises a noble metal oxide catalyst and a modified inert oxide, wherein the specific surface area of the modified inert oxide is greater than or equal to 50m < 2 > / g; a modifier adopted for modification comprises any one or a combination of at least two of a fluorine ion-containing inorganic substance, perfluoro-substituted organosilane or organic amine silane. According to the invention, the modified inert oxide with high specific surface area is introduced into the catalyst, so that the pores of the catalyst layer are accurately regulated and controlled from the molecular level, and the uniformity and repeatability of regulation and control are improved. A pore gradient is constructed in multiple dimensions, a microporous structure is formed inside the aggregate, mesopores and macropores are formed outside the aggregate, and the material transmission process is further promoted. The electrolytic performance of the PEM electrolyzed water is enhanced, and the stability of the PEM electrolyzed water is also improved.

The invention discloses a method for preparing a carbon monoxide oxidation catalyst by using a waste vanadium-titanium catalyst and electroplating sludge, which realizes the mutual reaction of metal components in the electroplating sludge and components in the waste vanadium-titanium catalyst through the synergistic effect of various physical and chemical treatment methods and additives in the whole preparation process. The complex multi-metal catalyst can be used for photo-catalytic oxidation of carbon monoxide, has a remarkable oxidation effect and has a good application prospect.

The present disclosure relates to supported metal catalysts, such as biochar-supported atomically dispersed metal catalysts, and methods of using supported metal catalysts to remove contaminants, such as antibiotics and per- and polyfluoroalkyl substances (PFAS), from aqueous medium.

The invention provides a large-aperture alumina carrier as well as a preparation method and application thereof. The large-aperture alumina carrier is prepared from dry materials and water, and the dry materials comprise inert fibers, aluminum hydroxide and ammonium aluminum carbonate. According to the invention, under the condition of low water-powder ratio, primary pores and secondary accumulation pores in aluminum hydroxide and ammonium aluminum carbonate are reserved to the greatest extent under high extrusion pressure in the carrier extrusion and molding process due to the enhancement effect of inert fibers; although the apertures of the primary pores, the secondary accumulation pores and the macropores generated by decomposition of the ammonium aluminum carbonate are reduced during roasting of the carrier, the volume ratio of the pores with the pore size of more than 500nm in the final carrier is still obviously increased due to the existence of the inert fibers, and the volume ratio of the pores with the pore size of more than 500nm is 15-25%. In addition, the by-product ammonium aluminum carbonate generated in the recovery process of the waste ethylene oxide catalyst is used as the raw material and the macroporous pore-enlarging agent, so that the production cost of the large-aperture alumina carrier is reduced. The prepared large-aperture alumina carrier can be used for preparing a residual oil hydrodemetallization catalyst.

The invention discloses a pure silicon Beta molecular sieve packaging metal catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: dissolving a silicon source, a template agent, a ligand, a metal salt and a mineralizer in water, carrying out a crystallization reaction at 120-200 DEG C, and carrying out calcination treatment and reduction treatment on the crystallized solid to obtain the pure silicon Beta molecular sieve packaging metal catalyst. The pure silicon Beta molecular sieve packaged metal catalyst is obtained. The pure silicon twelve-membered ring macroporous Beta molecular sieve encapsulated metal catalyst is prepared through a ligand protection in-situ hydrothermal synthesis strategy, so that the size of a metal nanocluster can be reduced, the high-temperature thermal stability of the metal nanocluster is improved, the adsorption and diffusion processes of guest molecules can be regulated and controlled, and the stability of the metal nanocluster is improved. Furthermore, the catalyst shows excellent catalytic performance when being used for catalyzing a propane dehydrogenation reaction and a methyl cyclohexane dehydrogenation reaction, and efficient and stable propane and methyl cyclohexane dehydrogenation performance is achieved.

The invention discloses a molybdenum-doped iridium-based multicomponent alloy core-shell structure PEM water electrolysis catalyst and a preparation method thereof, relates to the technical field of electrocatalysts, and forms an electrocatalyst material which takes precious metal iridium as a shell and transition metal cobalt and iridium as a core and is doped with transition metal molybdenum in the core shell. As the transition metal molybdenum has good corrosion resistance, the structure can improve the stability of the catalyst, and the transition metal is low in price, so that the cost of the catalyst can be reduced, and the activity among multi-metal catalysts is improved; meanwhile, the performance of the catalyst can be further improved by removing redundant metal on the surface and in the catalyst. The catalyst prepared by the method is high in OER activity, good in stability, low in cost and easy to industrialize, overcomes the defects of existing PEM water electrolysis hydrogen production, and has important value in the field of electrochemical application and practical engineering.

The invention belongs to the field of catalyst preparation, and relates to a preparation method and application of a novel hydrocarbon isomerization catalyst. The preparation method comprises the following steps: firstly, preparing a metal precursor, wherein the metal precursor can be prepared by loading a metal species in a mesoporous silica channel or interacting the metal species with an anionic polymer; then adding the precursor into an SAPO-11 synthesis system containing a phosphorus source, an aluminum source, a silicon source and a structure-directing agent, and carrying out hydrothermal or dry glue water vapor assisted crystallization; and finally, washing, drying and roasting the crystallized product to obtain the hierarchical porous SAPO-11-based metal catalyst with highly dispersed metal species. The method provided by the invention successfully realizes simultaneous modulation of the dispersity of metal species and the pore structure property of SAPO-11, and effectively improves the activity and isomer selectivity of the catalyst in a hydrocarbon skeletal isomerization reaction; the catalyst can be used for improving the octane number of gasoline, the condensation point of diesel oil, the viscosity-temperature performance of lubricant base oil, the freezing point of biological aviation kerosene and the like.

The invention discloses a preparation method for selectively oxidizing thioether into sulfoxide through photo-initiation, and belongs to the field of synthesis of medical compounds. The preparation method comprises the following steps that in the air atmosphere, a thioether compound is dissolved in an acetonitrile-water mixed solvent, inorganic metal salt catalysts such as ferric chloride and copper sulfate are added, the mixture reacts for 8-48 h at the temperature of 0-45 DEG C under illumination with the wavelength of 295-405 nm, selective oxidation is carried out, and the sulfoxide product is obtained, and the molar ratio of thioether to the catalysts is 5: 1. The method overcomes the problems of excessive oxidation risk, complicated operation, environmental pollution and the like caused by dependence of a noble metal catalyst and use of a strong oxidant in the existing thioether oxidation method, has the advantages of high catalytic efficiency, high yield and excellent selectivity, can greatly reduce the production cost, is suitable for later industrial synthesis and amplification, and has wide application prospects. The method has the advantages of no expensive metal catalyst or oxidant, simple preparation process, high efficiency, environmental protection, safety and cost saving.

The invention relates to the technical field of chemical production, in particular to a method and device for prolonging the service life of an active metal catalyst on line, and the method comprises the following steps: respectively carrying out activity recovery on the active metal catalyst by using an alkane solvent and a mixed gas containing H2, an ammonia-containing compound and an inert gas; the activity recovery comprises solvent circulation desolvation and hydrogen circulation cracking, and the solvent circulation desolvation comprises dissolution, internal circulation and / or external circulation; when gamma is more than gamma hydrogen and less than gamma solution, carrying out solvent circulation desolvation; when gamma is smaller than or equal to gamma hydrogen, hydrogen cycle cracking is carried out; when gamma is greater than or equal to gamma solution, reacting; gamma is the activity% of the catalyst at any stage; gamma hydrogen is a critical value for hydrogen cycle cracking, and gamma hydrogen is less than or equal to 60%; the gamma solution is a critical value of the solvent circulation desolvation, and the gamma solution is more than 60% and less than or equal to 80%. The method adopts a mode of combining solvent circulation desolvation and hydrogen circulation cracking, so that the activity of the catalyst is effectively improved, the service life is prolonged, and the number of times of unloading the catalyst is reduced.

The invention relates to a diffusion source for a neodymium-iron-boron magnet and a preparation method and application of the diffusion source. The invention discloses a rare-earth metal catalyst which comprises the following components in percentage by mass: 46%-49% of an organic solvent, 0.1%-2% of an adhesive, 0.1%-5% of a metal oxide and 46%-49% of rare-earth metal, and the melting point of the metal oxide is higher than that of the neodymium-iron-boron magnet. The specific organic solvent, the adhesive, the metal oxide and the rare earth metal are matched for use according to a specific matching relation, so that the diffusion source is more stable, the diffusion effect is improved, and when the magnet attached with the diffusion source is subjected to thermal diffusion treatment, the rare earth metal can be diffused into the magnet so as to improve the coercive force and other properties of the magnet. In the process, the high-melting-point metal oxide is adhered to the surface of the magnet and then serves as a spacer, the adhesion phenomenon of the magnet in the high-temperature sintering diffusion process is reduced or avoided, grain boundary diffusion is further promoted, and the performance of the magnet is improved.

A quantitative analysis method for internal and external loading capacities of carbon nanotubes. The method comprises the following steps: (1) placing, in a tubular furnace, carbon nanotubes loaded with metal catalyst particles, and vacuumizing same; (2) performing annealing and capping; (3) calcining same, then placing same in a reaction kettle, adding dilute sulfuric acid, and heating same while stirring to obtain a sulfuric acid metal salt solution and capped carbon nanotubes in which metal catalyst particles are loaded; (4) measuring the loading capacity of nickel in the carbon nanotubes by means of IPC-MS technology; and (5) measuring the content of metal ions in the sulfuric acid metal salt solution by means of an EDTA coupling method. Capping the carbon nanotubes in advance before detection prevents metal nano particles loaded in the tubes from leaking, provides prerequisites for subsequent respective detection of the loading capacities in the tubes and on the outer walls, and also improves the detection precision of the internal and external loading capacities of carbon nanotubes. Moreover, the progress rate and extent of the capping reaction are regulated and controlled by adjusting the annealing temperature and rate, thereby achieving a better capping effect.

The invention discloses an aluminum-based metal catalyst as well as a preparation method and application thereof, the efficient novel aluminum-based metal catalyst is prepared through simple and low-cost smelting, casting and crushing processes, the degradation efficiency of a persulfate advanced oxidation system on sewage pollutants is remarkably improved, and the environmental pollution is reduced. The degradation efficiency and the catalyst cost are both lower than those of a conventional Fe-based catalyst, and the problem that the catalytic efficiency is reduced due to inactivation of Fe < 2 + > in the conventional Fe-based catalyst is solved. According to the invention, the high activity of catalytic ions in the reaction process is realized through a multi-component alloy component system, which is the future development direction of persulfate advanced oxidation system catalysts.

The invention discloses a supported high-entropy metal catalyst as well as a preparation method and application thereof. The supported high-entropy metal catalyst comprises a carrier and an active metal component supported on the carrier, the active metal component at least contains Cu, and simultaneously contains a combination of at least four of Fe, Ni, Co, Mn, Ru, Pt and Pd; in the active metal component, the molar weight of each metal element is 5-50% of the total molar weight of the active metal component; in the supported high-entropy metal catalyst, the mass of the active metal component accounts for 5-30% of the total mass of the supported high-entropy metal catalyst. According to the supported high-entropy metal catalyst provided by the invention, due to the combination of various elements, the system entropy is increased, and the metal activity and selectivity are modulated through the interaction of electrons among metals, so that the supported high-entropy metal catalyst has excellent reaction activity, stability and heat absorption acting performance in a multi-component alcohol-water reforming reaction.

The invention discloses a high-efficiency composite catalyst for waste gas purification and a use method thereof, belongs to the technical field of catalysts, and aims to solve the technical problems that a zeolite molecular sieve used as a VOCs catalyst in the prior art is high in hydrophilicity, easy to cause a catalyst poisoning phenomenon and low in adsorption efficiency. The method comprises the following steps; the preparation method comprises the following steps: mixing styrene, divinyl benzene, a hydrophobic metal catalyst and a polar monomer, adding a related auxiliary agent to obtain an oil phase, mixing the oil phase and a water phase, and carrying out post-process treatment to obtain the high-efficiency composite catalyst for waste gas purification. A zeolite molecular sieve is used as a carrier, a hydrophobic inorganic adsorption material is prepared through modification of a modified fluorine-containing silane coupling agent, then the hydrophobic inorganic adsorption material is soaked in a mixed transition metal oxide solution, and the hydrophobic metal catalyst is obtained and has the advantage of being high in catalytic efficiency.

The invention relates to the technical field of catalyst preparation, and provides preparation of a Co-coated NC supported ruthenium metal catalyst and application of the Co-coated NC supported ruthenium metal catalyst in selective hydrogenation reaction of benzoic acid. The method comprises the following steps: adding benzoic acid and a Co-NC supported ruthenium catalyst into a high-pressure reaction kettle, and hydrogenating with benzoic acid in the high-pressure reaction kettle to obtain cyclohexanecarboxylic acid. The mass ratio of benzoic acid to the catalyst is 24: (1-6); hydrogen is used for replacement, and the hydrogen pressure ranges from 0.1 MPa to 2 MPa; the reaction temperature ranges from 333 K to 353 K; and stirring and reacting for 0.5-1 hour to obtain the product cyclohexanecarboxylic acid. Data of the embodiment of the invention show that the conversion rate of benzoic acid hydrogenation provided by the invention is 63.8%-98.6%, and the selectivity of cyclohexanecarboxylic acid is 75.6%-99.7%.

The invention provides a Pt-Sn bimetallic catalyst and a preparation method and application thereof.The preparation method comprises the steps that 1, a Y molecular sieve is placed in a mixed solution of KOH and methyl alcohol, centrifugation and washing are conducted till the Y molecular sieve is neutral after stirring, drying and roasting are conducted, and a non-acid KY molecular sieve is obtained; the silica-alumina ratio of the Y molecular sieve is 3-100; 2) taking the non-acidic KY molecular sieve as a carrier, and loading Sn by adopting an atomic layer deposition technology to obtain a Sn-modified non-acidic KY molecular sieve; and 3) loading Pt by using the Sn-modified non-acidic KY molecular sieve as a carrier and adopting an atomic layer deposition technology to obtain the Pt-Sn bimetallic catalyst. According to the preparation method provided by the invention, spatial distribution of Pt and Sn is accurately regulated and controlled by combining an atomic layer deposition technology, so that the electronic state of Pt species is adjusted, alkane is promoted to be dehydrogenated into an olefin intermediate, and the aromatization catalytic activity and the aromatic hydrocarbon selectivity of alkane are improved.

The invention relates to the technical field of air electrode preparation, in particular to a metal-loaded super-hydrophobic air electrode, a preparation method and chlorine production application, the air electrode comprises a high-hydrophobicity gas diffusion layer obtained through polytetrafluoroethylene modification, and the metal-loaded super-hydrophobic air electrode is prepared through a corona etching and electrochemical in-situ deposition technology. A uniform and highly-dispersed metal catalyst layer directly grows on the surface of the polytetrafluoroethylene substrate, so that the gas diffusion electrode with excellent mass transfer performance and an efficient catalytic function is obtained; the prepared electrode is used for carrying out electrochemical catalysis on a water body containing chloride ions by adopting a cyclic voltammetry method, and active chlorine can be efficiently generated in situ; the prepared metal-loaded super-hydrophobic air electrode has the advantages of being low in oxygen mass transfer resistance, high in catalyst utilization rate, free of generation of by-products, capable of efficiently generating active chlorine and the like, and has wide application potential in actual water environment disinfection.

The invention relates to the technical field of fuel cells, and mainly relates to a carbon-supported metal catalyst and a preparation method thereof. The preparation method comprises the following steps: dispersing platinum acetylacetonate, acetylacetone salt of transition metal and a carbon material in a solvent, drying to remove the solvent to obtain a precursor, and annealing for the first time in an air atmosphere to obtain a mixture; annealing the mixture for the second time in a hydrogen-argon atmosphere, cooling, pickling, washing, drying, and annealing for the third time in the hydrogen-argon atmosphere to obtain the carbon-loaded metal catalyst. According to the preparation method, platinum and acetylacetone salt of transition metal are used, after uniform dipping, annealing is directly carried out in the air atmosphere, two-step gas phase reduction is carried out in the hydrogen argon atmosphere, the platinum-based intermetallic compound nano-particles wrapped by the adjustable carbon layer are prepared, particle aggregation is effectively prevented, the prepared catalyst is high in order degree, and the catalyst has good catalytic activity. And the particles are fine and uniformly distributed and have excellent activity.

The invention discloses an application of a zirconium sulfate solid superacid and a nickel-carbon catalyst in concerted catalysis of hydrodeoxygenation of a lignite model compound. Under the mild conditions of 140-180 DEG C, 1 MPa H2 and 2-4 h, SO4 < 2-> / ZrO2 and 10% Ni / AC are used as catalysts, and 100% conversion rate of lignite model compounds such as diphenyl ether and the like and 100% high selectivity of cyclohexane are achieved. The solid superacid catalyst and the metal catalyst are physically mixed to synergistically catalyze hydrodeoxygenation of the lignite model compound, and a new thought is provided for clean and efficient utilization of coal.

The invention relates to a multi-carbonyl enol compound which has a structure as shown in a general formula I. The compound has a plurality of carbonyl enol structures. The invention further provides a synthesis method of the compound, the multi-carbon-based enol compound is prepared through an acylation reaction, a Willgerodt-Kindler reaction, a Vilsmeier-Haack-Arnold reaction and a hydrolysis reaction, the intermediate reaction step does not involve a noble metal catalyst, and the synthesis route is economical and efficient. The invention also provides a diazo naphthoquinone photoinitiator prepared by esterification and condensation of the compound as a monomer and diazo naphthoquinone sulfonyl chloride, and an application of the photoinitiator in I-line photoresist configuration. The compound disclosed by the invention is highly symmetrical in structure, has a unique enol interconversion and multi-carbonyl and hydroxyl functional group coexisting structure, and has an extremely wide application prospect.

The invention relates to the technical field of gas purification, and discloses a methane-removing nitrogen automatic regeneration type purification method which comprises the following steps: pretreatment of raw material gas: controlling the pressure and flow of a raw material gas inlet, and introducing the raw material gas into a gas-gas heat exchange device for primary heat exchange; performing catalytic reaction to remove methane: injecting oxygen into the raw material gas, mixing, heating by a heating device, introducing into a catalytic barrel, reacting methane with oxygen by using a rare metal catalyst to generate water and carbon dioxide, and automatically adjusting the oxygen injection amount by detecting the content of methane and oxygen in the gas at the outlet of a catalytic system, maintaining the temperature in the catalytic barrel in a specified interval; and cooling treatment: sequentially passing the raw material gas from which methane is removed through a gas-gas heat exchange device and a water-cooling heat exchange device, and cooling the raw material gas to a specified temperature. The methane removal nitrogen automatic regeneration type purification method aims at solving the problems that a purification system is low in regeneration efficiency and insufficient in automation degree.

An ammonia production method involves producing ammonia from nitrogen molecules, in a production device for performing electrolysis, in the presence of a metal complex and a solid catalyst in a cathode, by providing electrons from a power source, protons from a proton source, and nitrogen molecules from a means for supplying nitrogen gas, and by providing hydrogen molecules by sending hydrogen molecules to an anode including sending hydrogen gas produced at the cathode to the anode. Concerning a metal complex and a solid catalyst, as the metal complex, rac-ethylenebis(4,5,6,7-tetrahydro-1-indenyl) zirconium dichloride or the like is used, and as the solid catalyst, a metal catalyst or the like is used.

The invention relates to the technical field of chemical synthesis, and particularly discloses an alpha methyl beta phosphonate compound and a synthesis method thereof.The alpha methyl beta phosphonate compound is obtained by directly oxidizing the alpha position of aryl ketone into carbon positive and combining the carbon positive with diethyl phosphite anions under the alkaline condition by using hydrogen peroxide and iodine as oxidizing agents. The alpha methyl substituted beta phosphate ester compound can be generated by a one-step method. The method is suitable for synthesizing compounds of phosphoric acid (methyl, ethyl, propyl and the like) with different alkyl substitutes (methyl, ethyl, propyl and the like) at carbonyl alpha positions. According to the method, the alpha-methyl substituted beta phosphate compound can be synthesized only by using commercial cheap and easily available aryl ketone as a raw material, using hydrogen peroxide and iodine as oxidants and using diethyl hypophosphite as a phosphine source, and reacting in the DMSO solvent at 100 DEG C for 12 hours, so that the target product can be obtained, and the yield is excellent. Compared with previously reported methods, the method does not need low-temperature operation, is simple to operate, adopts a one-pot method, does not need a metal catalyst, and all raw materials are common bulk chemicals.

The invention relates to a low-cost composite metal catalyst which is a CuO / ZnO / Al2O3 composite metal catalyst, and the molar ratio of CuO to ZnO to Al2O3 is (6-4): (3-4): (0.5-1). The composite catalyst is prepared by the following steps: adding carbonate into a mixed salt aqueous solution of copper salt, zinc salt and aluminum salt for co-precipitation, grinding a filter cake, and roasting at high temperature. According to the catalyst, 1, 12-dodecanedioic acid dimethyl ester which is low in price and easy to obtain can serve as a raw material, 1, 12-dodecanediol is prepared through catalytic hydrogenation under the milder condition compared with the prior art, high yield and low cost are achieved on the premise that the process condition control difficulty is greatly reduced and the process safety is improved, and the problems that in the prior art, 1, 12-dodecanedioic acid dimethyl ester is synthesized, and the cost is low are solved. The technical problems of high energy consumption, expensive catalyst, harsh reaction conditions and difficult realization of industrial production in the reaction process of 1, 12-dodecanediol in the prior art are solved.

The invention discloses an application of a boron nitride non-metal catalyst in acetylene hydrochlorination reaction, and a preparation method of the boron nitride non-metal catalyst comprises the following steps: 1) adding a boron-containing compound, a nitrogen-containing compound and a halide into deionized water, and fully dissolving to obtain a mixed solution; secondly, adding a template agent KIT-6 into the mixed solution, and uniformly stirring; transferring into a hydrothermal reaction kettle with a polytetrafluoroethylene lining, purging air in the reaction kettle with nitrogen, sealing, and reacting at 250-400 DEG C for 20-40 hours; and 2) after the reaction is finished, carrying out suction filtration and washing on a product with deionized water, transferring the product into an HF solution to be soaked so as to remove the residual template agent, then washing the product with deionized water until the product is neutral, and drying the product to obtain the boron nitride non-metal catalyst. The preparation method of the catalyst is simple, and the catalyst has high activity and high stability at a low reaction temperature.

The present invention relates to the technical field of supported metallocene catalysts, and particularly relates to a supported metallocene catalyst additive, a preparation method thereof and an application. The supported metallocene catalyst additive has the following structure: #imgabs0#, wherein R is selected from C1-C10 alkyl groups, R1 and R3 are selected from alkyl groups and adamantyl groups and are in the ortho and para positions of -OH, R2 is selected from C1-C10 alkyl groups and cycloalkyl groups, and R' is selected from alkyl groups. This additive can greatly retain the catalytic activity and copolymerization performance of the metallocene catalyst, increase the metal loading and catalytic activity, and reduce the dosage of the traditional cocatalyst MAO.