235 results about "Hydrogenolysis" patented technology

The invention discloses a dechlorination regeneration method of a chlorine poisoning noble metal catalyst and an application of the regenerated noble metal catalyst in polyolefin hydrogenolysis, and the dechlorination regeneration method comprises the following steps: dispersing the chlorine poisoning noble metal catalyst in water, adding a strong nucleophilic reagent for treatment, and carrying out centrifugal separation, washing and drying treatment to obtain the chlorine poisoning noble metal catalyst. The regenerated noble metal catalyst is obtained. A strong nucleophilic reagent dechlorination regeneration strategy under a room temperature mild condition is provided, chemically inert metal-chlorine bonds are broken through a nucleophilic substitution effect, noble metal particles are prevented from being agglomerated and sintered while deep dechlorination is realized, polyolefin hydrogenolysis activity of the catalyst can be completely recovered, activity improvement can be realized, and the catalyst has a good application prospect. Meanwhile, the regeneration cost is greatly reduced, and the regenerated noble metal catalyst can be used for efficiently hydrogenolyzing, upgrading and recycling waste polyolefin to obtain liquid alkane fuel with high additional value.

The invention provides a mesoporous silicon-aluminum molecular sieve catalyst, a preparation method and application thereof, and a polyolefin plastic catalytic hydrogenolysis method. The mesoporous silicon-aluminum molecular sieve catalyst comprises a carrier and an active component loaded on the carrier, the carrier comprises a mesoporous silicon-aluminum molecular sieve, and the active component comprises at least one of ruthenium, rhodium and platinum; the total mass of the mesoporous silicon-aluminum molecular sieve catalyst is 100%, the mass content of the active component is 3-7%, and the mass content of SiO2 in the mesoporous silicon-aluminum molecular sieve is 5-28%; the mass ratio of SiO2 to Al2O3 in the mesoporous silicon-aluminum molecular sieve is 0.06 to 0.4. The catalyst can realize high-activity and high-selectivity catalytic hydrogenolysis of polyolefin plastic under mild conditions.

The invention discloses a liquid organic hydrogen storage material and application thereof, and belongs to the technical field of liquid hydrogen storage. The liquid organic hydrogen storage material is an organic compound with a diol structure, the organic compound with the diol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine, the liquid organic hydrogen storage material is low in melting point, high in boiling point, safe and low in toxicity, hydrogen is generated through liquid-phase dehydrogenation lactonization, the available hydrogen content is about 3.8%, and the 1, 5-pentanediol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine. The 1, 5-pentanediol can be prepared from a biomass platform compound furfural through hydrogenation and hydrogenolysis, and the source is rich; the diethylene glycol and the diethanol ammonia are bulk chemical products, easy to obtain and low in price, and the liquid organic hydrogen storage material has high industrial application value.

The invention provides a preparation method of a Zn-Cr spinel oxide catalyst and application of the Zn-Cr spinel oxide catalyst in CO2-assisted ethane dehydrogenation, and relates to the technical field of composite catalysts. Wherein the Zn-Cr spinel oxide catalyst is prepared by firstly preparing a Zn1Crx oxide carrier by adopting a coprecipitation method and then loading Cr on the surface of the Zn1Crx oxide carrier by adopting an impregnation method, and in the process, strong metal-carrier interaction can be formed between the loading of Cr on the surface of the carrier and the Zn1Crx oxide carrier, so that the oxygen vacancy concentration on the surface of the catalyst is regulated and controlled and the desorption of ethylene is promoted; according to the present invention, the Zn1Crx carrier is used as the catalyst to inhibit the excessive oxidation of the Zn1Crx carrier so as to significantly improve the selectivity of ethylene, and the metal Cr forms the compact covering layer on the surface of the Zn1Crx carrier so as to reduce the number of the strong oxidation active sites, synergistically promote the rapid desorption of ethylene, and inhibit the occurrence of the side reactions such as dry reforming and hydrogenolysis.

The application provides a preparation method of a supported catalyst and belongs to the field of catalyst preparation. The preparation method comprises the following steps: loading tungsten and niobium on a carrier by using a hydrothermal method, and washing and drying to obtain a catalyst intermediate body loaded with NbO x and WO x ; loading a platinum precursor on the catalyst intermediate body, drying and calcining to obtain the catalyst. The application adopts the hydrothermal method to prepare the NbO x -WO x / Y catalyst intermediate body, which can not only uniformly disperse NbO x and WO x on the surface of the carrier and make the particle size very small, but also can reduce the Pt salt into metal Pt in the calcination process by using the carbon-based compounds with reducing property generated by the reducing agent under the hydrothermal condition, so that the obtained catalyst does not need to be reduced after calcination and can be directly used in the glycerol hydrogenolysis reaction.

The invention discloses a catalyst for preparing alkyl levulinate from furfuryl alcohol as well as a preparation method and application of the catalyst. The preparation method of the catalyst comprises the following steps: (1) adding precursor salt of copper and aluminum oxide into deionized water, stirring at normal temperature, then adding 2-methylimidazole, stirring at normal temperature, and finally heating and stirring to obtain a mixed solution; (2) adding sodium carbonate into the mixed solution, heating and stirring, then filtering, washing filter residues with ionized water until the filter residues are neutral, and then drying to obtain a precursor; and (3) roasting the precursor to obtain the catalyst for preparing alkyl levulinate from furfuryl alcohol. The method for preparing the alkyl levulinate by catalyzing the hydrogenolysis of the furfuryl alcohol is mild in reaction condition, the alkyl levulinate is prepared by the hydrogenolysis of the furfuryl alcohol under the mild condition, and the yield of the alkyl levulinate is relatively high.

The present application relates to the technical field of carbon material preparation, and particularly relates to a preparation method of nitrogen-doped ultrathin nanosheet support microspherical carbon material. The preparation method of the microspherical carbon material comprises the following steps: mixing gallium salt, zinc salt, carbon precursor, amine compound and water, and performing a solvothermal reaction to obtain deep red powder solid; and then performing calcination on the deep red powder solid in an inert atmosphere, and performing acid washing, water washing and drying to obtain the microspherical carbon material. The residual template agent after calcination can be removed completely by using dilute hydrochloric acid, thereby avoiding the use of strong corrosive reagents such as HF, KOH or NaOH. The method realizes batch production of the synthesis of the nitrogen-doped ultrathin nanosheet support microspherical carbon material, is simple to operate, stable in process, and regular in product morphology, and the amount of gallium salt and amine compound is reduced. The Pd(OH)2 / C catalyst prepared by using the material as a carrier shows excellent catalytic activity in the hydrogenolysis debenzyl reaction of a cage-shaped substrate.

The invention relates to a method for preparing dihydric alcohol by hydrogenolysis of polyhydric alcohol, the hydrogenolysis process of the polyhydric alcohol is carried out in the presence of a supported catalyst, the catalyst carrier is formed alumina, and the active component is Pt metal and an auxiliary agent A thereof; the auxiliary agent A is one or more than two of Mo, Fe, La, Ce, Sn, Zr, Zn, W, Al, Ga, Mn, Nd and Ta, and the loading capacity of the auxiliary agent A is 0.01%-15% by mass of Al2O3. Compared with the prior art, the selectivity of 1, 3-propylene glycol prepared by hydrogenolysis of glycerin and the like can be improved, the glycerin conversion rate can be increased, the reaction pressure window can be widened, and the stability can be improved.

The present invention relates to a platinum / tungsten trioxide / silicoaluminate composite, a preparation method thereof and an application thereof. In the present invention, a platinum colloid and a tungsten trioxide colloid are respectively prepared, and then the platinum colloid and the tungsten trioxide colloid are mixed and silicon aluminate is added thereto to obtain the platinum / tungsten trioxide / silicoaluminate composite. The preparation method is very simple, easy to repeat and control; in the platinum / tungsten trioxide / silicoaluminate composite prepared by the present invention, there is a good combination between platinum nanoparticles and tungsten trioxide nanoparticles. When used as a catalyst in the selective hydrogenolysis reaction of polyols, it has a higher polyol conversion rate and selectivity, and good repeatability.

The invention discloses a method for preparing propylene glycol by hydrogenolysis of glycerol, and belongs to the technical field of propylene glycol preparation. In a hydrogen electrolytic tank, a three-electrode system is adopted, a reference electrode is an Ag / AgCl electrode, a counter electrode is a platinum sheet electrode, a working electrode is a CuAg-TiN electrode, the working electrode and the counter electrode are separated by a proton exchange membrane, and electrolyte is filled; and adding trimethylolpropane as an additive, and adding glycerol at the cathode for reaction to obtain the 1, 3-propylene glycol. According to the method, reaction is realized at normal temperature and normal pressure, hydrogen is not used, and active hydrogen generated by in-situ electrolysis of water reacts with glycerol, so that high-selectivity production of propylene glycol is realized, and the whole reaction process is mild in condition, low in cost and good in stability.

The application provides a device and method for producing succinic acid by oxidizing and hydrolyzing butane and / or benzene as raw materials, the device comprising: an oxidation separation system, a maleic anhydride hydrogenation separation system and a succinic anhydride hydrolysis system connected in series along the material flow direction; wherein butane and / or benzene and oxygen-containing gas are subjected to oxidation reaction in the oxidation separation system and separated to obtain maleic anhydride material; the maleic anhydride material enters the maleic anhydride hydrogenation separation system to perform hydrogenation reaction and is separated to obtain succinic anhydride; and the succinic anhydride enters the succinic anhydride hydrolysis system to perform hydrolysis and crystallization, thereby obtaining succinic acid product. The application provides a process for producing succinic acid from butane / benzene for enterprises with butane or benzene resources, and the application preferably adopts two-stage hydrogenation reactors and circulates part of the material at the outlet of the second reactor to the first reactor, so that the content of maleic anhydride in the first reaction feed can be effectively diluted and the reaction heat generated in the first reaction can be taken away due to the fact that the material does not contain maleic anhydride.

This invention relates to the field of chemical hydrogen storage, and discloses a carbon-based catalyst, its preparation method and application, and a method for the dehydrogenation of methylcyclohexane. The catalyst comprises nitrogen (N), carbon (C), hydrogen (H), and platinum nanoparticles; the catalyst has the following properties: "Pt x C y N z H a The schematic chemical composition of the catalyst is shown in the figure, where z:a = 1.5~5; z:x = 5~50; z:y < 0.016; in the catalyst, nitrogen atoms are covalently bonded to at least two carbon atoms; nitrogen atoms are covalently bonded to hydrogen atoms; the carbon tetrachloride adsorption value (CTC) of the catalyst is ≥80%; in the XRD spectrum of the catalyst, the A of the Pt(111), (200), (220), (222) crystal plane diffraction peaks of the platinum nanoparticles is ≥85%, and A = (Pt(111) peak area) / (peak area of ​​Pt(111) + peak area of ​​Pt(200) + peak area of ​​Pt(220) + peak area of ​​Pt(222))) × 100%. This catalyst has good catalytic activity and low hydrogenolysis activity, making it particularly suitable for dehydrogenation reactions, such as the dehydrogenation reaction of alkyl-substituted cycloalkanes. It can effectively control the hydrogenolysis reaction during the dehydrogenation process and reduce the generation of by-products. It is especially suitable for the application of methylcyclohexane dehydrogenation reaction. After the dehydrogenation reaction, the conversion rate of methylcyclohexane is high, and the methane content in the product is <0.3wt%.

The present invention discloses a method for preparing a Pd(OH)2 / ultra-thin spherical two-dimensional SiO2 catalyst, which belongs to the technical field of catalyst preparation. The method comprises the following steps: preparing a template solution, adding a silicon precursor and a morphology control agent dropwise thereto, stirring to obtain a composite precursor solution, dropping the composite precursor solution into an alkaline solution, reacting, centrifuging, washing and calcining to obtain an ultra-thin spherical SiO2 carrier, dispersing the carrier in deionized water and ultrasonically stirring to obtain a suspension, adding an acid solution of a palladium precursor to the suspension, stirring to obtain a target catalyst. The present invention also discloses a Pd(OH)2 / ultra-thin spherical two-dimensional SiO2 catalyst and its application. The method is simple in process, the carrier in the prepared catalyst has a large specific surface area, can stably load Pd(OH)2, exhibits high catalytic activity and low Pd loss rate in the HBIW hydrogenolysis benzyl reaction, and has good application prospects.

A process for producing 1,4-cyclohexanedimethanol by depolymerizing one or more recycled terephthalate-based polyesters or copolyesters via solvolysis with one or more glycols or alcohols and contacting the depolymerization product with an ester hydrogenolysis catalyst and hydrogen to produce a hydrogenolysis product and contacting the hydrogenolysis product with a hydrogenation catalyst and hydrogen to produce 1,4- cyclohexanedimethanol.

This invention relates to the field of biomass degradation technology, specifically to a ruthenium-based catalyst Ru@RuO2 supported by zirconium phosphate, its preparation method, and its application in catalyzing the hydrogenolysis of lignin. This invention is based on the in-situ reduction of elemental ruthenium to needle-like ruthenium oxide supported by amorphous zirconium phosphate, constructing a RuO2 / zirconium phosphate composite nanomaterial. This material can efficiently catalyze the hydrogenolysis of alkali-degraded lignin and model compounds such as α-O-4 and 4-O-5. Furthermore, the ruthenium nanoparticles generated from the in-situ reduction on ruthenium oxide exhibit high stability and can be reused multiple times.

The application discloses a synthesis method of 2-piperidinemethanol and belongs to the technical field of organic synthesis. The method takes biomass derivative 2,5-dihydroxymethylfuran as raw material, adds a supported bimetallic catalyst, a solvent and an ammonia source, and reacts under the condition of 0.1-8 MPa H2 pressure and 80-230 DEG C for 0.3-10 h, so as to obtain the target product 2-piperidinemethanol through one-pot selective hydrogenolysis-amination two-step coupling reaction. The active metal of the catalyst is any two of Ni, Co, Cu, Ru, Pd, Pt and Rh, and the total metal loading is 2wt%-30wt%. The raw material is renewable, the reaction condition is mild, the product selectivity is high (up to 85%), the catalyst is stable and easy to recover, the repeated use performance is good, the process route is simple and easy to enlarge, the method solves many drawbacks of the traditional synthesis method, realizes the green and efficient synthesis of 2-piperidinemethanol, and has wide application prospect in the fields of drug synthesis, environmental protection and catalysis.

The invention belongs to the technical field of high-value utilization of waste plastics and preparation of lubricating oil. According to the method for preparing the lubricating oil through hydrogenolysis of the polypropylene waste plastics, a supported non-noble metal-metal oxide catalyst is adopted to catalyze hydrogenolysis of the polypropylene waste plastics to prepare the lubricating oil in the absence of a solvent. According to the method disclosed by the invention, the polypropylene waste plastic can be converted into the high-value lubricating oil under low-cost and mild conditions, the problem of waste plastic pollution can be solved, and meanwhile, green and multi-way preparation of the lubricating oil can be realized.

Integrated processes are disclosed for the catalytic conversion of carbohydrate to ethylene glycol and / or propylene glycol using a homogeneous, tungsten-containing retro-aldol catalyst. In these processes, the carbohydrate is subjected to retro-aldol conversion and hydrogenation to provide a reaction product containing ethylene glycol and / or propylene glycol, other reaction process including organic acids, itols and tungsten species. Ethylene glycol and propylene glycol are separated from the reaction product for purification, and at least a portion of the remaining fraction is subjected to ion exclusion chromatography to provide an eluant containing tungsten species and a subsequent eluant containing organic acids and a substantially reduced concentration of tungsten species. At least a portion of the eluant containing tungsten species can be recycled for reuse directly or with intervening unit operations to enhance the catalytic activity of the tungsten species. The organic-containing fraction can be subjected to one or more unit operations to provide salable products or subjected to selective hydrogenolysis to lower glycols.

The utility model discloses a weighing and pulping system suitable for hydrogenolysis of lithium carbonate, which comprises a chelating agent preparation tank, a top inlet of which is connected with a chelating agent inlet pipe, and a side wall upper inlet of which is connected with a deionized water inlet pipe; a top inlet of the centrifugal clear liquid tank is connected with a lithium carbonate mother liquid pipe; a chelating agent inlet, a clear liquid inlet and a solid lithium carbonate feeding hole are formed in the top of the lithium carbonate weighing and pulping tank, a lithium carbonate slurry outlet is formed in the bottom, and an overflow hole is formed in the upper part of the side wall; a bottom outlet of the chelating agent preparation tank is connected with a chelating agent inlet of the pulping tank through a chelating agent metering pump; an upper overflow port of the centrifugal clear liquid tank is connected with a clear liquid inlet of the pulping tank through the hot side of the clear liquid heat exchanger; a solid lithium carbonate feeding hole of the pulping tank is connected with an outlet of the belt conveyor; a lithium carbonate slurry outlet of the pulping tank is connected with a lithium carbonate feeding buffer pool, and the bottom of each supporting leg of the pulping tank is provided with a weight sensor. The system can improve the precision, efficiency and product quality of lithium carbonate production.

The invention discloses a detoxification process before conversion of organic poison-containing semi-coke tail gas. The system equipment comprises a heat exchange module 1, a hydrogenation protector, a hydrogenation detoxification device, a dechlorination device, a hydrogenation dechlorination device, a heat exchange module 2 and a shift reactor. The method comprises the following steps: preheating semi-coke tail gas through a heat exchange module 1, introducing the semi-coke tail gas into a hydrogenation protector for pre-detoxification, simultaneously carrying out hydrogenolysis and detoxification on organic poison through a hydrogenation detoxification device, carrying out dechlorination through a dechlorination device, and further hydrogenolysis and removal of organic chlorine in the hydrogenation dechlorination device. The obtained clean semi-coke tail gas is subjected to heat exchange through the heat exchange module 2 and then enters the conversion module. According to the detoxification conversion process, toxicants in the semi-coke tail gas are fully identified, corresponding removal steps and measures are adopted, the problems that the conversion rate of a conversion catalyst is reduced and the longest service life is less than one year due to incomplete removal of impurities such as chlorine and arsenic in the existing semi-coke tail gas purification process can be effectively solved, the continuity and stability of device operation are effectively improved, and the service life of the device is prolonged. The economic benefit is obvious.

The invention provides a preparation method and application of a monatomic catalyst for preparing 1, 3-propylene glycol through high-selectivity hydrogenolysis of glycerol. The catalyst is composed of active metal, a metal oxide auxiliary agent A and a carrier. The active metal is Pt, and the metal oxide auxiliary agent A is one or two or more of niobium oxide, tantalum oxide, molybdenum oxide and tungsten oxide. The composition and proportion of the monatomic catalyst are accurately regulated and controlled through a strong electrostatic adsorption method, 1, 3-propylene glycol is prepared through efficient catalysis of selective hydrogenolysis of glycerin, the yield of 1, 3-propylene glycol in a high-concentration glycerin solution (50 wt%) reaches up to 0.43 g of 1, 3-propylene glycol g of the catalyst h <-1 >, and excellent stability is achieved. The method has the advantages that the catalyst is simple and convenient to prepare and low in cost, the precious metal atom utilization rate is 100%, recovery is easy, products are easy to separate, and the reaction process is environment-friendly. According to the technical scheme, the invention provides a novel preparation method and application of the monatomic catalyst for preparing 1, 3-propylene glycol through efficient hydrogenolysis of glycerol, and the monatomic catalyst has an excellent application prospect.

This invention belongs to the field of catalytic materials technology, and discloses a NiCo nanosphere alloy catalyst material, its preparation method, and its application. The invention involves dissolving nickel nitrate, cobalt nitrate, and anhydrous sodium acetate in ethylene glycol and stirring vigorously until homogeneous. The homogeneous solution is then transferred to a polytetrafluoroethylene (PTFE) reactor and reacted at an ambient temperature of 25–350°C for 1–120 h. The reaction product is washed, centrifuged, and the resulting pale blue precipitate is dried. The dried pale blue precipitate is then reduced in a tube furnace to obtain a NiCo alloy catalyst material with a nanosphere structure. The synthesis process of this NiCo alloy catalyst material is simple and the conditions are mild. When used for the catalytic hydrogenolysis of lignin to high-value aromatic monomers, the obtained catalyst material exhibits high selectivity for aromatic monomers, and its catalytic performance is comparable to commercially available noble metal catalysts, representing a significant breakthrough in replacing noble metals with inexpensive transition metals.

The invention discloses a preparation method of a copper-mediated multi-active-site catalyst and application of the copper-mediated multi-active-site catalyst in thermal dissolution polymerization of low-rank coal, copper nitrate, cobalt nitrate and cerous nitrate are dissolved in deionized water in proportion, heated and stirred to be uniform, and a sodium hydroxide solution is dropwise added for co-precipitation to obtain turbid liquid; and carrying out low-temperature crystallization, high-temperature hydrothermal treatment, centrifugal washing to be neutral, vacuum drying, grinding into powder, high-temperature calcination, cooling and hydrogen reduction to finally obtain the Cu / CoOx-CeO2 catalyst. The catalyst has the advantages of excellent hydrogenation reduction capacity, high product selectivity, low preparation cost and the like, and low-rank coal depolymerization can be realized in various reaction solvents; for hydrogenation reaction of dimer or monomer model compounds such as 2-phenoxy-1-phenethyl alcohol, not only can catalytic transfer hydrogenolysis of C-O bonds be realized in low-carbon alcohol, but also intramolecular self-hydrogen transfer hydrogenolysis can be realized by utilizing self structural characteristics of a substrate, so that the atom utilization rate is increased.

The application discloses a method for preparing aromatic hydrocarbon and ethylene glycol by depolymerization and coupling ethylene carbonate hydrogenolysis of waste polyester plastic, and a Cu-based supported catalyst is used as a catalyst and prepared by an ammonia evaporation method and a low-temperature hydrogen reduction method. The waste polyester plastic is used as raw material, dioxane is used as a solvent, and the coupling ethylene carbonate hydrogenolysis reaction is carried out at 120-200 DEG C, so that the depolymerization rate of the polyester reaches 100%, the yield of the aromatic hydrocarbon converted from the polyester by further complete deoxygenation reaches 100%, and the yield of the ethylene glycol reaches 99%. The method realizes the resource utilization of the waste polyester plastic and the high-value conversion of the low-price ethylene carbonate under mild conditions.

The application discloses a synthesis process of (-)-alpha-lycorane alkaloid and belongs to the technical field of organic synthesis chemistry. (2Z,4E)-7,7-diethoxy-3-hydroxyhepta-2,4-dienoic acid methyl ester and 3,4-methylenedioxy-beta-nitrostyrene are used as starting materials, and (-)-alpha-lycorane is obtained through catalytic asymmetric tandem Michael addition reaction, nitro reduction amination reaction, Boc amidation reaction, Bischler-Napieralski cyclization reaction, ketone enolization tandem esterification reaction, enol triflate reductive hydrogenolysis reaction and amide reduction reaction in sequence. (-)-Alpha-lycorane has a four-membered ring core skeleton of pyrrole-phenanthridine ring, has good in-vitro tumor inhibition activity and cell proliferation growth inhibition activity. The synthesis process can realize efficient, simple and full synthesis of (-)-alpha-lycorane.

The present invention relates to a preactivation method of a supported metal catalyst for catalyzing the hydrogenolysis reaction of polyols. The catalyst is composed of a carrier and active components A and B, wherein the carrier is one of aluminum oxide, silicon oxide, zirconium oxide, titanium oxide or molecular sieve, the active component A is one of tungsten oxide, molybdenum oxide and niobium oxide, and the active component B is one of precious metals ruthenium, rhodium, palladium, iridium and platinum. The present invention adopts a technical solution that uses pure hydrogen or a mixed gas containing hydrogen and an inert gas, and liquid water as a reducing agent, and the preactivation temperature is 80 to 500° C., and the hydrogen dissolved in the liquid contacts the catalyst, and the high-valent metal oxide in the catalyst is slowly reduced to a low-valent active metal oxide or a metal element, thereby effectively solving the sintering problem of the catalyst in the hydrogen reduction process, thereby significantly improving the reaction activity of the hydrogenolysis of polyols and the selectivity of the target product.

[Problem] To perform selective hydrogenolysis of a cyclic compound that has a five-membered ring structure and that is included in a saturated cyclic compound used as a hydrogen carrier. [Solution] A metal catalyst used in hydrogenolysis of a cyclic compound that has a five-membered ring structure and that is included in a saturated cyclic compound used as a hydrogen carrier, comprises: a silica-based carrier as a catalyst carrier; and iridium or rhodium as a metal supported on the catalyst carrier.

Processes for activation of hydrogenolysis catalysts are described. A process can include contacting an oxidized catalyst with a butane containing stream in the presence of H2 to form a treated catalyst. The treated catalyst can then be contacted with H2 to form an activated hydrogenolysis catalyst. The source of the oxidized catalyst can be a fresh catalyst or deactivated catalyst that has been exposed to, for example, oxygen. Uses of the activated hydrogenolysis catalyst are also described.

The application discloses a high-activity Ni-Ca bimetallic catalyst and a preparation method and application thereof. The catalyst takes NiCa hydrotalcite as a precursor, and a supported high-dispersion Ni-Ca bimetallic catalyst is prepared through calcination reduction. The high-dispersion catalyst NiCa / Al2O3 exhibits excellent catalytic performance in the aryl ether hydrogenolysis and in-situ deoxygenation reaction of coal and model compounds thereof, can highly actively and selectively crack aryl ether bonds in coal extract residues and coal related model compounds under mild conditions, and can perform in-situ deoxygenation on oxygen-containing compounds obtained after the aryl ether bonds are cracked without hydrogenating aromatic rings, and highly selectively obtains platform chemicals, i.e. aromatic hydrocarbon compounds. The catalyst preparation method is simple, has good stability, and has a good application prospect in the catalytic hydrogenation conversion of medium and low rank coal under mild reaction conditions.