81 results about "Disproportionation" patented technology

The invention relates to the technical field of superfine molybdenum powder preparation, in particular to a preparation device and method for low-oxygen superfine molybdenum powder. The specific preparation device comprises a sublimation bin, a reaction area and a gas-solid separation bin which are sequentially connected, the reaction zone comprises a preheating zone, a reduction zone and a conversion zone; a part of the hydrogen pipeline and a part of the carbon monoxide pipeline are arranged in the preheating area; one end of the hydrogen pipeline extends to the reduction area and is used for providing preheated hydrogen and carrying out gas-phase reduction reaction on the preheated hydrogen and the gas-phase MoO3 subjected to heat preservation; one end of the carbon monoxide pipeline extends to the conversion area and is used for providing preheated carbon monoxide and reacting with water vapor to complete primary water vapor conversion; meanwhile, partial carbon monoxide is subjected to a disproportionation reaction to generate micro carbon powder, and the micro carbon powder and water vapor are subjected to a water gas reaction to complete secondary water vapor conversion. The problem that the oxygen content of existing superfine molybdenum powder prepared through gas-phase molybdenum trioxide reduction is too high is solved.

This disclosure relates to a method for producing composite particles. The method comprises contacting catalyst particles, an oxidizing agent, and a plurality of monomers. The oxidizing agent is a peroxide, a persulfate, or ozone, and the catalyst particles are or comprise a material having Fenton or Fenton-like catalytic activity. The catalyst particles catalyze the disproportionation of the oxidizing agent to produce oxygen-radical species, which then initiate a polymerization reaction, thereby polymerizing the plurality of monomers, thereby forming a polymer shell around the catalyst particles. The present invention extends to composite particles produced by the method, an apparatus containing the composite particles, and the use thereof.

The invention relates to the field of petrifaction and discloses a Mo-W heteronuclear bimetallic composite carrier catalyst as well as a preparation method and application thereof. The Mo-W heteronuclear bimetallic composite carrier catalyst comprises an Al2O3-SiO2 composite carrier with a three-dimensional ordered macroporous structure, and Mo-W heteronuclear bimetallic which is uniformly dispersed and loaded on the composite carrier in situ, wherein Mo and W are respectively combined with the surface of the composite carrier through Mo-O-Si and W-O-Al to form charge gradient polarization sites, the valence state of Mo is + 4 to + 6, and the valence state of W is + 4 to + 6. The catalyst provided by the invention has a good mass transfer effect, can give consideration to both acidic site density and metal dispersibility, and has high conversion rate, high selectivity and strong carbon deposition resistance when being applied to toluene disproportionation, aromatic hydrocarbon transalkylation, heavy aromatic hydrocarbon lightening and other reactions.

The present application relates to a kind of purification method of nitric oxide gas, comprising the following steps: crude nitric oxide gas is imported into extraction column, and the extraction phase obtained after extraction is imported into resolution column for temperature resolution;Nitric oxide gas resolved is imported into ethanol absorption tower after alkali washing tower and condenser;Again imported into the adsorption tower filled with 13X molecular sieve;After adsorption, the gas is collected into product collection bottle, and the purity of more than 99.99% nitric oxide product is obtained.The present application uses ferrous sulfate solution as extractant, extracts refined nitric oxide, realizes the efficient extraction of nitric oxide by the coordination reaction of ferrous ion and nitric oxide in the purification process, then uses ethanol as absorbent, utilizes the significant difference in solubility of nitric oxide and nitrous oxide in ethanol, can selectively absorb the nitrous oxide impurity difficult to remove, finally uses 13X molecular sieve to further remove nitrous oxide, which is beneficial to reduce disproportionation reaction and improve product purity.

This invention provides an activation method for a liquid fatty amine, a preparation process for the liquid fatty amine and silane, wherein the liquid fatty amine has a tertiary amine group; the activation method involves activating the liquid fatty amine with silicon tetrachloride; this method can significantly improve the catalytic effect of the liquid fatty amine, and the activated liquid fatty amine exhibits higher catalytic activity in the process of disproportionation of trichlorosilane to prepare silane, which can effectively reduce the reaction activation energy, increase the reaction rate, and improve the single-pass reaction efficiency and conversion rate.

The invention provides an electric furnace thermal reduction magnesium smelting co-production silicon carbon negative electrode material and a device thereof. MgO, SiO2, coke, biological pyrolytic carbon and methane gas are used as raw materials and are added into a magnesium smelting electric arc furnace for carbon thermal reduction to obtain mixed furnace gas; the mixed furnace gas enters a quenching condenser to be subjected to isentropic expansion and cooling treatment after being subjected to heat compensation through a heat compensation chamber, and solid-phase particles and cooling furnace gas are obtained; the solid-phase particles and the cooling furnace gas are cooled by a first cooling chamber to obtain ternary mixed powder, and the ternary mixed powder is subjected to the operations of metal magnesium vacuum distillation, magnesiothermic reduction and silicon monoxide disproportionation reaction offline; residual gas in the first cooling chamber is secondarily cooled through the second cooling chamber, and a primary material required by the silicon-carbon negative electrode material is co-produced in a gas-phase reaction mode in the magnesium smelting process, so that near-full continuous production of main links of the silicon-carbon negative electrode material and co-production coupling of carbon thermal reduction of magnesium metal are realized.

The present application belongs to the field of refinery dry gas utilization, and discloses a system and method for preparing propylene by disproportionation of refinery dry gas. The system comprises a raw material pretreatment unit, a disproportionation reaction unit and a product separation unit. The raw material pretreatment unit comprises, in sequence, an alkali washing package, a dry gas compressor, a dry gas absorption tower, a first desorption tower, a second desorption tower and a circulating carbon four cooler. The disproportionation reaction unit comprises a disproportionation reactor inlet-outlet heat exchanger, a disproportionation reactor and a reaction outlet cooler. The product separation unit comprises a deethanizer, a propylene rectification tower, a reaction separation tail gas absorption tower and a remaining carbon four cooler. The system and method can reduce the consumption of carbon four raw material, improve the recovery rate of ethylene in refinery dry gas and reduce consumption.

This invention belongs to the field of chemical catalyst preparation technology, and discloses a catalyst for the disproportionation of diethylamine to triethylamine. The catalyst includes a support, and MgO, ZnO, and rare earth oxides supported on the support. The content of each component, based on 100% mass, is as follows: support 80-85%, MgO 5-10%, ZnO 5-10%, and rare earth metal oxides 2-5%. When used for the disproportionation of diethylamine to triethylamine, the catalyst exhibits high diethylamine conversion and high selectivity for the triethylamine product. After separation, unreacted diethylamine can be recycled, while monoethylamine is collected separately or recycled back to the diethylamine synthesis unit, significantly reducing overall costs.

The invention discloses a functionally partitioned sulfur filler and a preparation method thereof. The functionally partitioned sulfur filler comprises a porous sulfur core and a polydopamine film, the surface of the porous sulfur core is coated with the polydopamine film; sulfur disproportionated bacteria are loaded in pores of the porous sulfur core; denitrifying bacteria are loaded on the surface of the polydopamine membrane, and a dissolved oxygen gradient is formed in the sulfur filler; an inner-layer anaerobic zone is arranged in the porous sulfur core and is used for performing sulfur disproportionation reaction; the surface of the polydopamine membrane is an outer-layer anoxic zone and is used for carrying out denitrification reaction. According to the present invention, the flora partition is constructed in the single filler, the sulfur disproportionation bacteria are separated from the external nitrate and the dissolved oxygen to a certain degree, the symbiosis and the cooperation of the sulfur disproportionation bacteria and the denitrifying bacteria are ensured, the sulfide and the polysulfide are produced through the internal sulfur disproportionation reaction, and the electrons in the sulfide and the polysulfide are supplied to the denitrifying bacteria for use so as to achieve the efficient and stable nitrogen removal.

This invention discloses a toluene shape-selective disproportionation catalyst, its preparation method, and its application. The toluene shape-selective disproportionation catalyst contains a modified ZSM-5 molecular sieve supported on alkaline earth metals and macroporous alumina. Its total acidity is 0.15–0.25 mmol / g, the acidity outside the micropores is no higher than 5.0 μmol / g, preferably 0.5–3.0 μmol / g, and the pore volume is 0.18–0.30 cm³. 3 / g, wherein the micropore volume is 0.05~0.12cm³. 3 Based on the weight of the toluene shape-selective disproportionation catalyst, the modified ZSM-5 molecular sieve has a mass content of 40-95% and the alkaline earth metal content is 0.5-1.5%. The catalyst preparation method includes the preparation of modified ZSM-5 molecular sieves supported on alkaline earth metals and the preparation process of catalysts containing modified ZSM-5 molecular sieves supported on alkaline earth metals. The catalyst preparation process is simple, reducing the acidity of the catalyst surface without affecting the pore flow of the catalyst, improving xylene selectivity while significantly reducing side reactions such as aromatic condensation, reducing carbon deposition, and increasing catalyst lifespan.

The utility model provides a preparation device of electronic-grade silane. According to the preparation device, a first disproportionation reaction is carried out on the basis of the first reactor, dichlorosilane is rectified and separated to serve as a raw material for a second disproportionation reaction, silane can be obtained on the basis of cheap trichlorosilane and a catalytic reagent, and electronic-grade silane can be obtained on the basis of traditional purification after rectification; based on heat exchange between tower top materials of the rectifying tower I and a tower kettle reboiler of the rectifying tower II, differential pressure thermal coupling integration is realized, condensing equipment and operation steps can be omitted, energy consumption is reduced, and the defects of high preparation cost and high energy consumption of a silane preparation device in the prior art are overcome.

The present invention provides a refrigeration cycle device capable of improving system performance while suppressing disproportionation reaction by injecting a working medium containing an ethylene-based fluoroolefin without coming into contact with a motor part of a compressor. This refrigeration cycle device uses a working medium containing an ethylene-based fluoroolefin, and is provided with a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a medium-pressure accumulator, and also with an injection pipe that feeds the working medium from the medium-pressure accumulator to a compression unit in the compressor. The working medium injected from the injection pipe to the compressor is compressed by the compressor and then is directly discharged to the outside of the compressor.

The invention provides a method for preparing methyl chlorosilane by using methyl chlorosilane high-boiling cracking residual liquid. The method comprises the following steps: by taking methyl chlorosilane high-boiling residue cracking raffinate, methyl trichlorosilane and trimethyl chlorosilane as main raw materials and Al2O3-V2O5-WO3 as a catalyst, carrying out cracking disproportionation in a high-pressure reaction kettle under the conditions of heating and pressurizing, and rectifying and separating a reaction product to obtain the dimethyl dichlorosilane. According to the method, the high-value dimethyldichlorosilane can be prepared from the hazardous waste methyl chlorosilane high-boiling cracking residual liquid through the disproportionation reaction, so that cyclic utilization of the high-boiling residue cracking residual liquid is realized, and the problems that the high-boiling residue cracking residual liquid is large in discharge amount, difficult to treat and the like are solved; and through catalysis of Al2O3-V2O5-WO3, the selectivity of dimethyldichlorosilane can be improved, toxic aniline substances carried in high-boiling residue cracking raffinate can be adsorbed, and the problems of environmental pollution and the like are solved.

This utility model discloses a system for removing impurities from carbon-containing chlorosilanes and recovering chlorosilanes, comprising: a first distillation column for receiving and concentrating carbon-containing chlorosilanes; a first adsorption and reaction device connected to the first distillation column, the first adsorption and reaction device being filled with a metal adsorbent material and equipped with a silicon tetrachloride feed pipeline; a second adsorption and reaction device connected to the first adsorption and reaction device, the second adsorption and reaction device being filled with a methyldichlorosilane adsorbent material; a second distillation column connected to the second adsorption and reaction device; and a third distillation column connected to the second distillation column. This utility model can adsorb and concentrate metal impurities in carbon-containing chlorosilanes as a catalyst for the carbon removal reaction, effectively avoiding deactivation and failure caused by metal impurities encapsulating the resin catalyst, improving the conversion rate of methyldichlorosilane, and effectively avoiding the disproportionation reaction of silicon trichloride in the presence of the resin catalyst, thereby improving the carbon removal efficiency and chlorosilane recovery efficiency.

A toluene disproportionation process utilizing treated UZM-39 zeolite is described. The process produces an effluent stream containing para-xylene and benzene. The molar ratio of benzene to xylene (Bz / X) in the effluent stream can range from 1.00 to 1.14, the molar ratio of para-xylene to xylene (pX / X) in the effluent stream can range from 0.80 to 1.0, and the toluene conversion can be 20% to 40%.

A disproportionation and transalkylation catalyst can be used in the catalytic conversion of alkyl aromatic hydrocarbons. The catalyst contains an acidic molecular sieve, a first metal component immobilized on the acidic molecular sieve and an oxide additive. The first metal contained in the first metal component is at least one selected from the group of Group VB metals, Group VIB metals and Group VIIB metals, the catalyst has a medium strong acid content of 0.05-2.0 mmol / g of catalyst, and a ratio of the medium strong acid content to the total acid content of 60-99%. When used in the catalytic conversion of alkyl aromatic hydrocarbons, the catalyst exhibits high reaction activity, low aromatic hydrocarbon loss rate.

Provided is a method for suppressing a disproportionation reaction in a working medium for a refrigeration cycle in which a working medium for a refrigeration cycle, which contains a refrigerant component that can undergo a disproportionation reaction, is circulated. Carbenes generated by a disproportionation reaction of a refrigerant component are trapped by using a reactive carbene trapping agent having higher reactivity with carbene than substances other than the carbene present in a refrigeration cycle, and the disproportionation reaction of the refrigerant component is suppressed.

The invention relates to the technical field of lithium ion battery negative electrode materials, and discloses an iron / nitrogen co-doped silicon monoxide composite negative electrode material and a preparation method thereof.The method comprises the steps that in an alkaline buffer solution, dopamine is subjected to a self-polymerization reaction on the surfaces of silicon monoxide particles and is synchronously coordinated with iron salt, and the iron / nitrogen co-doped silicon monoxide composite negative electrode material is obtained; the preparation method comprises the following steps: firstly, preparing a polydopamine-iron (SiOx-coated PDA-Fe) precursor by using a hydrothermal method to form a uniform SiOx-coated polydopamine-iron (SiOx-coated PDA-Fe) precursor, then, carrying out two-step heat treatment on the precursor in an inert atmosphere to synchronously realize iron-catalyzed carbon layer graphitization and silicon monoxide disproportionation reaction, and finally, carrying out acid pickling to obtain a target product. According to the preparation method, through the precise process of step-by-step heat treatment, the coating layer is stably carbonized firstly, then material activation and conductive network construction are synchronously completed, a unique core-shell structure and a point-line-surface three-dimensional conductive buffer network are formed, the prepared material has high first efficiency, excellent rate capability and ultra-long cycle life, the process is efficient, and the preparation method is suitable for industrial production. The method is suitable for large-scale production.

The application discloses a toluene disproportionation catalyst and a preparation method and application thereof. The toluene disproportionation catalyst comprises composite modified alumina and modified molecular sieve. The composite modified alumina comprises alkali metal and / or alkaline earth metal, transition metal A and alumina. The modified molecular sieve comprises molecular sieve and modified metal. The toluene disproportionation catalyst is used for toluene disproportionation reaction and has the advantages of high benzene selectivity.

The fluorine content of the fluorine-doped ion sieve precursor is 0.2%-2%, and the particle size of the fluorine-doped ion sieve precursor is 80-150 nm. The invention also discloses a preparation method of the fluorine-doped ion sieve precursor. The preparation method comprises the following steps: preparing a manganese and lithium metal salt solution A, and preparing a citric acid solution B and a fluorine-containing salt solution D; mixing the solution A and the solution B, heating and stirring to obtain a colloidal solution C; performing vacuum drying on the solution C to obtain a solid intermediate; grinding the solid intermediate, and calcining in a muffle furnace to obtain an ion sieve precursor marked as LMO powder; weighing LMO powder, putting the LMO powder into a reaction kettle, and adding the fluorine-containing salt solution D and deionized water; placing the reaction kettle in a muffle furnace for heat treatment to obtain precursor slurry; and carrying out suction filtration, washing and drying on the precursor slurry to obtain the fluorine-doped ion sieve precursor. According to the invention, the ion sieve precursor is doped with fluorine, so that the electron transmission path of disproportionation reaction is changed, and the problem of manganese solution loss of LiMn2O4 in the process of adsorbing and extracting lithium is solved.

The invention discloses a synthesis device and process of porous tricalcium phosphate / tetracalcium phosphate in the technical field of bone repair materials. The synthesis device comprises a synthesis sintering furnace, a placement mechanism and a separation device, the sintering table is used for placing a sintering material, the synthesis sintering furnace is used for synthesizing tricalcium phosphate, tetracalcium phosphate and a porous material, the placing mechanism is used for placing a sintering raw material, and the separating device is used for enabling the sintering table to be separated from the extending part one by one so as to enable material blocks to fall on the cooling plate. The detachable sintering table is arranged on the placing mechanism, and a high-temperature-resistant metal cooling plate is arranged in the sintering table; after sintering is completed, a sintering table is detached to enable material blocks to fall on a cooling plate, a cooling medium is introduced for cooling, the enough cooling rate is directly achieved in a furnace body, the problem that the cooling rate does not reach the standard due to one-by-one discharging is avoided, the disproportionation reaction of tetracalcium phosphate can be effectively reduced, the purity of tetracalcium phosphate is improved, and the service life of the tetracalcium phosphate is prolonged. Finally, the quality of the porous material is improved.

The invention relates to a toluene disproportionation catalyst with high benzene yield and a preparation method thereof, and mainly solves the technical problems of low reaction space velocity, low one-way toluene conversion rate, large aromatic hydrocarbon loss and low benzene yield in the existing toluene disproportionation catalyst technology. The catalyst is composed of one or two hydrogen-type special-shaped molecular sieves, a binder, a transition metal oxide and a pore-forming auxiliary agent. The content of the hydrogen type molecular sieve in the catalyst is 60-80 wt%, the content of the binder is 20-40 wt%, and the content fraction of the transition metal oxide is 0.1-10%. The catalyst is applied to toluene disproportionation reaction, has a high one-way toluene conversion rate of more than 50%, benzene selectivity of more than 47% and aromatic hydrocarbon loss of less than 2%, has a reaction space velocity WHSV of up to 5.0 h <-1 >, and can well solve the problems of low reaction space velocity, low one-way toluene conversion rate, large aromatic hydrocarbon loss and low benzene yield.

The application discloses a preparation method of a modified zinc-bromine flow battery carbon felt negative electrode and a carbon felt negative electrode prepared by the method, and belongs to the field of zinc-bromine flow batteries. The carbon felt is soaked in a mixed solution of cuprous sulfate in water and acetonitrile, then acetonitrile is gradually evaporated from the solution by heating, the cuprous sulfate gradually undergoes disproportionation reaction, and the elemental copper generated by the disproportionation reaction of the cuprous sulfate is deposited on the surface of the carbon felt, so that the purpose of loading the elemental copper on the modified carbon felt is achieved. The elemental copper is relatively stable in chemical properties and has good affinity for zinc, and the loading of the elemental copper on the surface of the carbon felt can reduce the overpotential of zinc nucleation and increase the active sites on the surface of the carbon felt. In addition, there is a strong force between copper and zinc, which is conducive to the uniform deposition / detachment of zinc in the charging and discharging process, so that a more uniform zinc deposition layer is formed on the surface of the carbon felt, the formation of zinc dendrites is reduced, and the electrochemical performance of the zinc-bromine flow battery is improved.

The application discloses an ultrahigh-temperature ceramic matrix composite material and a preparation method thereof. f / C p The composite material is prepared from the carbon fiber fabric composite material by high-temperature disproportionation reaction with a molten salt reaction system. f / C p The composite material is prepared from the C f / MC p The composite material is prepared from the C f / MC p The composite material is prepared from the C f / MC-SiC ultrahigh-temperature ceramic matrix composite material. The preparation method provided by the application not only reduces the thermal chemical damage of carbon fibers in the metal infiltration process, but also solves the technical problem that the slurry infiltration ultrahigh-temperature ceramic phase is difficult to uniformly disperse in the fiber fabric, and the obtained ultrahigh-temperature ceramic matrix composite material has excellent comprehensive performance.

The invention discloses a high-valence Nb < 5 + > doped manganese oxide lithium ion sieve as well as a preparation method and application thereof, and belongs to the technical field of preparation of lithium ion sieves. The preparation method comprises the following steps: synthesizing a LiMnO2 precursor step by step, calcining manganese carbonate into Mn2O3, and carrying out hydrothermal reaction with LiOH; nbCl5 and LiMnO2 are mixed and calcined, Nb < 5 + > is doped and replaces part of Mn < 3 + > ions according to the proportion of 0.02-0.10, and a stable solid solution structure is formed. According to the lithium ion sieve, the average valence state of manganese can be improved by doping high-valence-state Nb < 5 + >, so that the disproportionation reaction of Mn < 3 + > is inhibited, the solution loss of manganese is reduced, the skeleton structure of spinel is stabilized, and lattice distortion is relieved. The adsorption capacity is 30.0-35.5 mg g <-1 >, the adsorption capacity after circulation is maintained to be 28-35 mg g <-1 >, and the manganese dissolution loss rate is 3.0-4.0%. The adsorbent is applied to extraction of lithium from salt lake brine, can enhance selective adsorption of Li < + >, overcomes the problem of performance degradation of traditional adsorbents, efficiently and stably extracts lithium, and has wide prospects and economic values.

The invention belongs to the technical field of battery materials, and provides a positive electrode material and a preparation method and application thereof, and the positive electrode material comprises modified manganese dioxide formed by doping beta-Al2O3 in a manganese dioxide lattice. According to the invention, the beta-Al2O3 is doped with manganese dioxide, so that the high-temperature performance of the button cell can be improved, the expansion of the cell after high-temperature storage is effectively slowed down, and the low-temperature pulse load level after high-temperature storage is improved. The doping of Al < 3 + > can reduce the disproportionation reaction of Mn < 3 + > and Jahn-Teller distortion, so that the stability of the structure is improved, the side reaction with electrolyte can be reduced during high-temperature storage, gas production is reduced, and the expansion height of the battery is reduced.

This invention discloses a C9+ heavy aromatic hydrocarbon lightening catalyst, its preparation method, and its application. The catalyst uses modified ZSM-5 molecular sieve and modified Beta molecular sieve as acid cracking components, and Group VIB and / or Group VIII metals as hydrogenation components. The ratio of acid content inside the micropores to acid content outside the micropores of the catalyst (A...) in / A out The ratio of micropore volume to mesopore volume (V) should be no less than 100, preferably 200-500. micro / V meso The concentration is 1.0~5.0, preferably 1.5~3.5. The method includes the modification process of the ZSM-5 molecular sieve and the Beta molecular sieve, and the kneading and molding process. The catalyst has both long-chain alkylbenzene dealkylation activity and toluene / trimethylbenzene alkyl transfer activity, realizing the lightening of heavy aromatics without the need for external toluene, and effectively avoiding side reactions such as trimethylbenzene disproportionation and aromatic condensation, delaying carbon deposition, and improving the operating cycle of the device.

The application relates to the field of heat conducting oil, and discloses a heat conducting oil base oil and a preparation method and application thereof.A preparation method of a heat conducting oil base oil, wherein the method comprises the following steps: (1) carrying out an alkylation reaction on isopropyl naphthalene and propylene to obtain an alkylation product; (2) separating and removing isopropyl naphthalene in the alkylation product; and (3) carrying out a disproportionation reaction on the product obtained in the step (2). The heat conducting oil base oil prepared by the method has high flash point and high safety, and can be applied to an application environment of 320-350 DEG C.

The application discloses a low-residual-alkali long-circulation silicon monoxide carbon material and a preparation method thereof, which comprises a low-crystal-grain-size silicon monoxide with a single lithium silicate phase as an inner core, a non-water-soluble silicate phase on the surface, and double carbon layers coated on the surface, wherein an inner layer of the double carbon layers is a hydrophobic carbon layer formed by CVD coating, and an outer carbon layer is a conductive carbon layer with a hydrophilic group. The application adopts a non-active lithium source to pre-lithiate at a constant high temperature for a long time, the non-active lithium source increases the oxygen content on the surface of the silicon monoxide, and surface passivation is completed, thereby inhibiting disproportionation reaction in the pre-lithiation process and surface reduction reaction when a subsequent active lithium source is pre-lithiated, further inhibiting the generation of crystal silicon, and lithium is diffused in the inner core to form a lithium silicate phase at a high temperature.

The application discloses a supported catalyst for 1-hexene self-disproportionation and a preparation method thereof. The raw materials of the supported catalyst for 1-hexene self-disproportionation include a ruthenium carbene complex, a chlorosilane, a phosphine-siloxane compound and a silica-alumina mesoporous molecular sieve. The silica-alumina mesoporous molecular sieve has a silica-aluminum molar ratio of 25-30, a specific surface area of 550-850 m 2 / g, a relative crystallinity of 90-95%, a pore size of 2.5-3.5 nm and a pore volume of 0.80-1.0 cm 3 / g. The active sites of the supported catalyst for 1-hexene self-disproportionation are fully exposed, the loading amount of the ruthenium carbene complex is high, the metal ruthenium is not easy to fall off, and the preparation process is simple, so that the 1-hexene self-disproportionation reaction can be effectively initiated.