121 results about "Hydrogen transfer" patented technology

The invention discloses a method for preparing a single-benzene-ring liquid chemical through solvent-free hydrogenation degradation of polystyrene waste plastics based on a bifunctional catalyst. According to the method, Nb2O5 is taken as a carrier, 1-3wt% of noble metal ruthenium is loaded to prepare a bifunctional catalyst, and high-molecular-weight polystyrene is efficiently degraded into single-benzene-ring liquid chemicals such as benzene, methylbenzene and ethylbenzene through hydrogenation reaction under a solvent-free condition. Precious metal ruthenium hydrogenates a polystyrene long chain to generate a short-chain hydrocarbon intermediate, then a carrier # imgabs0 # acid site drives beta-cracking and hydrogen transfer reaction, and a single-benzene-ring product is directionally generated through the synergistic effect of the short-chain hydrocarbon intermediate and the carrier # imgabs0 # acid site. The method has the advantages of no solvent, reduced equipment cost, high reaction efficiency, simple reaction operation, mild reaction conditions, simple catalyst preparation process, high activity, selectivity and good stability, and is suitable for industrial production, and no other solvents preempt acidic sites. The method not only can realize cyclic utilization of resources, but also can alleviate the current environmental pollution problem.

The invention discloses a chiral alpha alkyl beta hydroxyl phosphate compound as well as a preparation method and application thereof, and belongs to the technical field of chemical synthesis. In the presence of a catalyst, carbonyl of a substrate is reduced into hydroxyl to obtain a chiral alcohol compound, alpha-alkyl beta-ketophosphonate is reduced by an asymmetric catalytic hydrogen transfer method, and a reduced product can be used as a core skeleton of various drug molecules, so that the chiral alcohol compound is prepared. The compound has an obvious promotion effect on migration and repair of keratinocytes, and has great application potential in the aspects of wound healing, skin tissue soothing, repair, aging resistance and the like.

The invention discloses a catalyst for preparing cyclohexanone by cyclohexanol dehydrogenation coupled phenol hydrogenation, the catalyst has a composite metal hydrotalcite structure, the metal components comprise ruthenium, magnesium and aluminum, the metal components are uniformly dispersed in hydrotalcite, and the ruthenium, the magnesium and the aluminum respectively account for 1-5wt%, 10-30wt% and 1-10wt% of the total mass of the catalyst. The acid-base property, the specific surface area and the pore structure of the catalyst are optimized by adjusting the ratio of magnesium to aluminum, so that the dispersion of ruthenium is improved, the interaction between ruthenium and a hydrotalcite carrier is increased, and the synergistic effect of all the element components enables active centers in cyclohexanol dehydrogenation, hydrogen transfer and phenol hydrogenation processes to be efficiently combined together, so that the catalytic activity of the catalyst is improved. Rich alkaline sites are generated in the catalyst, the dehydration side reaction of cyclohexanol can be effectively inhibited, meanwhile, the selectivity of cyclohexanone prepared through phenol hydrogenation is improved, it is ensured that the phenol hydrogenation reaction and the cyclohexanol dehydrogenation reaction can be effectively coupled, and cyclohexanone is efficiently prepared.

The invention provides a composite hydrogen transfer catalyst based on an MOFs material as well as a preparation method and application of the composite hydrogen transfer catalyst. The composite hydrogen transfer catalyst comprises the MOFs material loaded with an active metal component and solid alkali, the active metal component is selected from at least one of palladium, platinum, ruthenium, rhodium and nickel; the active metal component accounts for 0.5-5% of the mass of the catalyst; the MOFs material is selected from at least one of ZIF-8, MIL-101, UiO-66, HKUST-1 and MOF-5 (Metal Organic Frameworks); the solid alkali is selected from at least one of magnesium oxide, calcium oxide, hydroxyapatite and barium oxide. The catalyst provided by the invention has the advantages of high catalytic activity, good selectivity, strong stability, reusability and the like, can efficiently catalyze fatty alcohol to perform hydrogen transfer reaction under a lower-temperature reaction condition to prepare Guerbet alcohol, remarkably improves the yield and purity of a product, and reduces the reaction energy consumption and cost.

The application relates to a CuO-ZnO-ZrO2@CeO2 core-shell catalyst and a preparation method and application thereof in preparing methanol. The preparation method is as follows: copper nitrate and zinc nitrate are dissolved in deionized water to form a mixed solution, a precipitant is added, and hydrothermal reaction is carried out to obtain copper-zinc nanoscale dispersed particles; then the particles are dispersed in deionized water, a zirconium nitrate aqueous solution is added, and hydrothermal reaction is carried out to precipitate zirconium on the outer layer of the particles; then a cerium nitrate aqueous solution and a precipitant are added to the system, and hydrothermal reaction is carried out; after the reaction, the system is subjected to filtration, washing, drying, grinding and calcination to obtain the CuO-ZnO-ZrO2@CeO2 core-shell catalyst. In the application process, CO2 and H2 are used as raw materials, cyclohexanol is used as a solvent, hydrogenation reaction is carried out under the action of the core-shell catalyst at 190-210 DEG C, and methanol is prepared. The core-shell catalyst can be applied to hydrogen transfer hydrogenation for preparing methanol, and can exhibit excellent catalytic activity and stability and higher methanol selectivity.

The present invention primarily relates to a coordination complex obtained or obtainable by a process as defined herein and to a process for producing a coordination complex as defined herein. Moreover, the present invention relates to a coordination complex as defined herein. The present invention further relates to the use of a coordination complex obtained or obtainable according to the process as defined herein or of a coordination complex as defined herein as a catalyst. Finally, the present invention relates to a process, preferably a hydrogen transfer reaction, more preferably for the isomerization of a double bond in a substrate, as defined herein.

The invention provides a method for producing ethylene and propylene by catalytic conversion of a heavy raw material, which comprises the following steps: introducing a catalyst A containing a Y-type molecular sieve, a modified MSE structure molecular sieve and a modified ZSM-5 molecular sieve into a first reaction zone of a riser to react with the heavy raw material; the separated C4-C12 non-aromatic hydrocarbon component enters a fluidized bed reactor to react with a preheated catalyst B containing a modified MSE structure molecular sieve and a modified ZSM-5 molecular sieve, and a partial carbon deposition catalyst B which is reacted with the C4-C12 non-aromatic hydrocarbon component (light petroleum hydrocarbon) and forms slight carbon deposition is introduced into the middle part of a second reaction zone of the riser; a first oil agent mixture (an intermediate product of heavy raw oil cracking) is preferentially reacted with the catalyst B, so that the concentration of the catalyst B in the second reaction zone is improved, the hydrogen transfer activity of the catalyst in the second reaction zone is reduced, the generated propylene is prevented from further generating propane, the propylene selectivity is improved, the ethylene and propylene selectivity is improved, and the yield is high.

The present invention belongs to the field of catalyst technology, and specifically discloses an organic hydrogen transfer aid for propane dehydrogenation and a synthesis method thereof. The preparation method described in the present invention is to first coat the surface of a quinone material (L) with a layer of SiO2, and then perform a hydrothermal crystallization treatment to form an S-1 molecular sieve shell to obtain an L@S-1 material. Through the confinement of the molecular sieve pores, the quinone material can realize a hydrogenation-dehydrogenation cycle at a higher reaction temperature. When the material is used in combination with a noble metal propane dehydrogenation catalyst, a series reaction of propane dehydrogenation and hydrogenation of the quinone material is realized, the hydrogen partial pressure of the propane dehydrogenation process is reduced, and the thermodynamic equilibrium limit is broken through, thereby realizing a propane dehydrogenation reaction at a lower reaction temperature. The reduction in reaction temperature will bring about advantages such as reduced energy consumption and increased catalyst stability.

The present invention belongs to the field of chemical catalysis technology, and discloses a method for preparing m-methylbenzyl alcohol. The present invention provides a route and corresponding catalyst for directly producing m-methylbenzyl alcohol from low-carbon alcohol aldehydes through hydrogen transfer or dehydrogenation-coupling-aromatization reaction. The selectivity of m-methylbenzyl alcohol is as high as 47.7%, and the selectivity of m-methylbenzaldehyde is 4.6%. m-methylbenzaldehyde can be converted into m-methylbenzyl alcohol by simple hydrogenation. Mild reaction conditions avoid the generation of excessive oxidation products. The reaction route produces hydrogen as a by-product, which is a clean energy source. The route also generates high-carbon chain alcohols, which are easy to separate by distillation and can be used as fuels or oil additives. In addition, the route also generates o- and p-methylbenzyl alcohols and methylbenzaldehyde, which can be used in the fields of spices, medicine, cosmetics, pesticides, etc.

The application discloses a method for hydrogen transfer reaction by using a micro-reactor device, wherein the micro-reactor device comprises a liquid pipeline system, a gas pipeline system, a micro-reactor and a cooling and product collecting system; the top of the micro-reactor is communicated with the liquid pipeline system and the gas pipeline system respectively, and the bottom of the micro-reactor is connected with the cooling and product collecting system; the method comprises the following steps: filling Pt / Al2O3 catalyst in the reaction tube of the micro-reactor; first pumping inert gas into the micro-reactor to discharge air in the micro-reactor, and then continuously pumping raw material liquid formed by mixing alcohol compound of formula I and amine compound of formula II into the micro-reactor to carry out reaction; the reaction liquid flows out of the micro-reactor and then enters the cooling and product collecting system to be collected, so as to obtain product of formula III. The micro-reactor is used to carry out hydrogen transfer reaction, and higher product yield is obtained.

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 invention relates to a fuel cell system with hydrogen separation and hydrogen regeneration capabilities. A fuel cell system including an electrochemical hydrogen pump (EHP) and a polymer electrolyte membrane fuel cell (PEMFC) is provided. The EHP includes a first membrane electrode assembly having a first electrolyte membrane, an anode, a cathode, and a bipolar plate, while the PEMFC includes a second membrane electrode assembly having similar components. The hydrogen gas generated by the EHP is supplied to the anode of the PEMFC for power generation. The system is characterized by high temperature operation, effective hydrogen transfer via a silica binder, and an optimized bipolar plate made of graphitic carbon having a low resistance and thermoset resin content. The system ensures efficient power generation with minimal hydrogen loss and operates without the need for additional mechanical or electrical auxiliary equipment components.

The invention provides a catalytic cracking method for highly producing ethylene and propylene from hydrocarbons, which comprises the following steps: (1) introducing preheated raw materials and water vapor from the lower part of a reactor, contacting with a catalyst and reacting to obtain a reaction oil agent; the reactor at least comprises two reaction zones, namely a first reaction zone and a second reaction zone from bottom to top, the average solid content of a catalyst in the first reaction zone is greater than 0.2, and the average solid content of a catalyst in the second reaction zone is less than 0.1; (2) carrying out gas-solid separation on the reaction oil agent to obtain a carbon deposit catalyst and oil gas; and separating the oil gas to obtain a product comprising ethylene and propylene. In the initial stage of the reaction, a dense-phase reaction zone is adopted to increase the contact between hydrocarbon molecules and the active center of the catalyst, so that the proportion of catalytic cracking reaction is remarkably increased, and the thermal cracking reaction degree is reduced; a dilute phase reaction zone is adopted at the reaction tail end, reconversion of generated ethylene and propylene is reduced, hydrogen transfer reaction and condensation reaction are reduced, and the yield ratio of diene / (methane + coke) is greatly increased.

The application discloses an electrochemical double hydrogenation three-cell system, which comprises a chemical cell, an anode cell, a cathode cell, an ion exchange film, a palladium film, and a power supply; the palladium film serves as an anode electrode, and a first nano-porous palladium alloy catalyst is coated on one side of the surface of the palladium film; a cathode electrode is arranged in the cathode cell, and the cathode electrode is a second nano-porous palladium alloy catalyst; the system generates adsorbed hydrogen by electro-oxidation of a second organic substrate in the anode cell on the surface of the palladium film through the anode electrode; the adsorbed hydrogen is transferred to the chemical cell through the characteristics of the palladium film body phase hydrogen transfer, and the hydrogenation of the organic substrate is realized on the surface of the first nano-porous palladium alloy catalyst; meanwhile, the cathode electrode generates adsorbed hydrogen by hydrolysis on the surface of the second nano-porous palladium alloy catalyst to realize the hydrogenation of the organic substrate, and finally the electrochemical double hydrogenation of the organic matter is realized; experimental results show that when the three-cell system is applied to organic hydrogenation, the faraday efficiency is as high as 200%, and meanwhile, the system has excellent stability and ultralow energy consumption.

The invention relates to core-shell structure zeolite containing a ZSM-5 zeolite shell as well as a preparation method and application of the core-shell structure zeolite. The core-shell structure zeolite containing the ZSM-5 zeolite shell comprises spherical nuclear-phase zeolite and a shell layer wrapping the nuclear-phase zeolite, wherein the shell layer is continuous and compact ZSM-5 zeolite, and the ratio of the average particle size of the ZSM-5 zeolite to the average thickness of the shell layer is 9-32. The core-shell structure zeolite containing the ZSM-5 zeolite shell has a continuous and compact ZSM-5 zeolite shell layer, high pore channel smoothness exists between a nuclear phase and a shell phase, and when the core-shell structure zeolite containing the ZSM-5 zeolite shell is used in a catalytic cracking reaction, high reaction activity of nuclear-phase zeolite can be maintained, the selectivity of a target product low-carbon olefin can be improved, and the selectivity of side reactions such as hydrogen transfer can be reduced; meanwhile, a macromolecular aromatic hydrocarbon product generated by the nuclear-phase zeolite can be continuously cracked into a micromolecular BTX product in the shell ZSM-5 zeolite in the outward diffusion process, so that the BTX selectivity is improved.

The present invention discloses a ZSM-5 molecular sieve catalyst, a preparation method thereof and an application thereof. The properties of the catalyst are as follows: the ratio of the amount of framework aluminum at the intersection of the straight pore channels and the sinusoidal pore channels to the amount of framework aluminum in the straight pore channels and in the sinusoidal pore channels is 1.4:1 to 10:1, and the micropore pore volume accounts for 70% to 92% of the total pore volume. When the catalyst of the present invention is used in the reaction of catalytic cracking of olefins to produce propylene and ethylene, it has the characteristics of low reaction hydrogen transfer index, high stability, high raw material olefin conversion rate, and high selectivity of the products propylene and ethylene.

This invention discloses a method, system, and application for producing linear α-olefins from waste high-density polyethylene (HDPE). The method includes: subjecting waste HDPE to a first pyrolysis treatment to obtain volatile gaseous substances; subjecting the volatile gaseous substances to a second pyrolysis treatment, separation treatment, and condensation treatment sequentially to obtain a product including linear α-olefins; wherein, by mass percentage, the waste HDPE comprises the following components: 80-90% HDPE, 5-10% polypropylene, 1-5% polystyrene, and 2-5% impurities. This invention employs a continuous two-stage pyrolysis process, significantly improving the heat and mass transfer efficiency of the pyrolysis process, greatly reducing secondary reactions, and enabling high-temperature-promoted hydrogen transfer reactions, thereby continuously and efficiently producing mixed linear α-olefin products. It has advantages such as a relatively simple preparation process and a relatively concentrated product distribution.

The invention discloses a method for preparing light aromatic hydrocarbon by catalytic pyrolysis of waste polypropylene plastics, which comprises the following steps: by taking a hollow ZSM-5 molecular sieve as a carrier, loading metal Ga by an ion exchange method, introducing Zr by an impregnation method to obtain a zirconium-gallium modified hollow ZSM-5 molecular sieve catalyst, and carrying out two-stage ex-situ reaction process, firstly, deeply depolymerizing the polypropylene plastics to obtain the light aromatic hydrocarbon. Macromolecular long-chain hydrocarbon is converted into micromolecular short-chain hydrocarbon, so that a more suitable reactant is provided for subsequent aromatization; then short-chain hydrocarbon is fully diffused in pore channels of the zirconium-gallium modified hollow ZSM-5 molecular sieve, and is subjected to hydrogen transfer and aromatization reaction under the synergistic effect of acidic sites of the molecular sieve. Meanwhile, the introduction of nitrogen or carbon dioxide atmosphere inhibits the generation of alkane by-products caused by hydrogen transfer to a certain extent, and further improves the selectivity of aromatic hydrocarbon.

The present invention relates to a hydrogen transfer pipe having excellent high-pressure resistance and bending characteristics. Specifically, the present invention relates to a hydrogen transfer pipe having excellent high-pressure characteristics that does not expand or deform due to the high pressure of hydrogen being transferred, satisfies bending characteristics required for long-distance hydrogen transfer, and can reduce installation costs.

The application discloses a polymer-coated mesoporous silica supported ruthenium catalyst and a preparation method and application thereof. The catalyst has a polymer-coated mesoporous silica inner core, wherein the surface of the silica inner core is grafted with triethoxysilane having an alkenyl group; the alkenyl group of the triethoxysilane serves as an active site; the polymer is formed by polymerization of a polymer monomer through the alkenyl group; and the catalyst is formed by further coordination of metal Ru. The particle size of the catalyst is between 400 nm and 600 nm. The supported ruthenium catalyst provided by the application can catalyze hydrogen transfer reduction of carbonyl compounds at a high yield (up to 99%) and high enantiomeric selectivity (up to 99%), can be recycled for 8 times through simple recovery, and is easy to be industrialized, and can reduce catalyst cost and pollution.

The application discloses a light hydrocarbon dehydrogenation and cracking synergic catalyst and a preparation method thereof. The catalyst contains the following components in percentage by weight: 30-70% of molecular sieve in dry basis; 5-10% of a first binder in dry basis; 0.2-6% of a metal compound in dry basis; 10-20% of a powder in dry basis; 5-10% of a second binder in dry basis; and 10-30% of clay in dry basis. The preparation method comprises the following steps: a. preparing a catalytic cracking catalyst; b. preparing a catalytic dehydrogenation catalyst; and c. spray granulation to prepare a microspherical catalyst product. The application has the beneficial effect of having a core-shell structure, which can maximize the dehydrogenation and cracking synergic catalytic effect, thereby maximizing the single-pass conversion rate, inhibiting hydrogen transfer, aromatization and other reactions, and achieving the purpose of improving the ethylene and propylene yield.

The application provides a catalytic cracking catalyst and a preparation method thereof. The catalytic cracking catalyst comprises, taking the weight of the catalytic cracking catalyst as 100%, 15-50% of rare earth ultra-stable Y type molecular sieve in dry basis, 10-60% of clay in dry basis, 1-4% of yttrium in oxide basis and 5-35% of binder in oxide basis; wherein the content of the rare earth in the rare earth ultra-stable Y type molecular sieve is not more than 3% in oxide basis, taking the weight of the catalytic cracking catalyst as 100%. The catalyst utilizes the characteristics of small cell and more mesopores of the low-content rare earth ultra-stable Y type molecular sieve, and yttrium is additionally added on the basis of the low-content rare earth ultra-stable Y type molecular sieve, so that the activity stability of the catalyst is better, the mass transfer, cracking reaction and selective hydrogen transfer reaction process are promoted, the selectivity of the catalytic cracking reaction is improved, and the coke formation is reduced while the content of olefin in gasoline is reduced.

The invention discloses a preparation method of a C-acyl glycoside compound, which comprises the following steps: by taking aromatic aldehyde as a raw material and glucoside as an alkyl source, simultaneously adding a catalyst, a ligand, a hydrogen transfer reagent, alkali and a solvent into a reaction bottle, and carrying out coupling reaction in a nitrogen atmosphere to obtain the C-acyl glycoside compound. The method provided by the invention has the advantages of cheap and easily available raw materials, simple experiment, and excellent substrate adaptability, functional group compatibility and reaction selectivity; the product yield is high, the influence on the environment is small, and an efficient, economical and environment-friendly synthesis strategy is provided for the development of the pharmaceutical chemical industry field.

The invention relates to a CuO-ZnO-ZrO2-coated CeO2 core-shell catalyst, a preparation method thereof and an application of the CuO-ZnO-ZrO2-coated CeO2 core-shell catalyst in methanol preparation, the preparation method comprises the following steps: dissolving copper nitrate and zinc nitrate in deionized water to form a mixed solution, then adding a precipitator, and carrying out a hydrothermal reaction to obtain copper-zinc nanoscale dispersed particles; then dispersing the particles in deionized water, adding a zirconium nitrate aqueous solution for hydrothermal reaction, and precipitating zirconium on the outer layers of the particles; and adding a cerium nitrate aqueous solution and a precipitant into the system, carrying out a hydrothermal reaction, and after the reaction is finished, carrying out suction filtration, washing, drying, grinding and calcining to obtain the CuO-ZnO-ZrO2 at CeO2 core-shell catalyst. The application process is as follows: CO2 and H2 are used as raw materials, cyclohexanol is used as a solvent, and under the action of the core-shell catalyst, hydrogenation reaction is performed at 190-210 DEG C to prepare methanol. When the core-shell catalyst is applied to preparation of methanol through hydrogen transfer hydrogenation, excellent catalytic activity and stability and higher methanol selectivity can be shown.

The invention discloses a method for preparing aliphatic hydrocarbon through co-pyrolysis of a photovoltaic module laminated part waste ethylene-vinyl acetate copolymer and a waste polyolefin elastomer. Physical and chemical complementation and free radical synergy of the ethylene-vinyl acetate copolymer and the polyolefin elastomer in the pyrolysis process are utilized; compared with independent pyrolysis, hydrogen transfer and deoxidation in co-pyrolysis have a synergistic effect, so that the selectivity and yield of aliphatic hydrocarbon are improved, generation of acidic oxygen-containing components and aromatics caused by deacetic acid is remarkably reduced, a liquid product is mainly composed of aliphatic hydrocarbon, carbon chain distribution is directionally concentrated to a short chain range, and meanwhile, tail gas corrosivity and post-treatment load are reduced. The solid carbon generated in the reaction process has a certain microporous structure and can be used as an adsorbent, an electrode material or a carbon-based fertilizer carrier, so that clean treatment and resource utilization of organic components of the retired photovoltaic module are realized.

According to an aspect, there is provided an end fitting for reducing hydrogen transfer to a pressure tube of a nuclear reactor across a rolled joint. The end fitting includes a barrier disposed along at least a portion of an internal diameter of the end fitting configured to contact coolant. According to an aspect, there is provided a method of reducing the transfer of hydrogen to a pressure tube of a nuclear reactor across a rolled joint. The method includes providing an end fitting including a barrier disposed along at least a portion of an internal diameter of the end fitting configured to contact coolant, and burning fuel in a nuclear reactor.

The invention belongs to the technical field of fine chemical engineering, and discloses a method for preparing 2-methyl furan by-product aldehyde or ketone through furfural hydrogen transfer hydrogenation, which comprises the following steps: by adopting a fixed bed reactor, pumping raw materials furfural and saturated monohydric alcohol into a preheater through a pump for preheating, and then entering a catalyst bed layer; and reacting under the action of a copper-based catalyst to generate 2-methyl furan and aldehyde or ketone. The problems that in the process of preparing 2-methylfuran through furfural hydrogenation at present, furfural is prone to coking on the surface of a catalyst at high temperature, the catalyst is prone to inactivation due to agglomeration and coking, and the hydrogenation process has large potential safety hazards are solved.

The invention discloses a preparation method and application of a Pd nano-catalyst with a core-shell structure, the Pd nano-catalyst with the Pd nano-catalyst as a core and other transition metals as a shell structure is synthesized by adopting a microwave-assisted microemulsion-atmosphere induction method, and the Pd nano-catalyst with the core-shell structure is used for hydrogen production reaction through oxidative decomposition of ammonia. The catalyst has strong oxidation resistance and hydrogen transfer capability, so that the catalyst has excellent activity and selectivity in hydrogen production reaction through oxidative decomposition of ammonia.

The present invention primarily relates to a coordination complex obtained or obtainable by a process as defined herein and to a process for producing a coordination complex as defined herein. Moreover, the present invention relates to a coordination complex as defined herein. The present invention further relates to the use of a coordination complex obtained or obtainable according to the process as defined herein or of a coordination complex as defined herein as a catalyst. Finally, the present invention relates to a process, preferably a hydrogen transfer reaction, more preferably for the isomerization of a double bond in a substrate, as defined herein.

The invention provides a method for catalytic synthesis of aripiprazole by using a hydrogen transfer strategy, and the preparation method comprises the following steps: taking 7-hydroxy-3, 4-dihydro-2 (1H)-quinolinone as a starting material, and carrying out nucleophilic substitution type etherification reaction on the starting material and 4-bromo-1-butanol in an alkaline medium to generate a 7-(4-hydroxybutoxy)-3, 4-dihydro-2 (1H)-quinolinone intermediate; and then, by taking a ruthenium catalyst as a catalytic system, carrying out N-alkylation reaction on the intermediate and 1-(2, 3-dichlorophenyl) piperazine hydrochloride to finish the synthesis of the target compound aripiprazole. The method has the advantages of being short in technological process, high in atom utilization rate, high in yield, low in cost, environmentally friendly and the like.