604 results about "Catalytic hydrogenation" patented technology

The invention belongs to the technical field of petroleum processing, and particularly relates to a catalyst and a preparation method and application thereof. The raw materials of the catalyst comprise a metal active component, a carrier and an auxiliary agent, the metal active component is sulfides of Mo and Ni elements, the carrier is spherical gamma-Al2O3 of 0.5-1 mm, and the auxiliary agent is P; the carrier is modified by using the metal active component and the auxiliary agent to serve as the catalyst. The high-activity catalyst is synthesized by adopting the strategy of changing the roasting temperature, adding the additive for doping modification and changing the molar ratio of metal active components, the additive is combined with surface aluminum atoms, the framework strength is enhanced, pore channel collapse caused by acid / water erosion is reduced, the water resistance and acid resistance of the catalyst are improved, and the catalytic reaction activity is further improved. The catalyst disclosed by the invention is accurate and controllable in structure, can be synthesized in batches, and can be applied to the co-catalytic hydrogenation process of biomass pyrolytic oil and / or a model compound thereof and petroleum distillate oil and / or VR.

The invention relates to a method for preparing a nerofloxacin chiral piperidylamine intermediate, which comprises the following steps of: carrying out condensation reaction on 5-hydroxy nicotinic acid which is simple and easy to obtain and is used as a raw material and different alcohols, screening through a series of asymmetric catalytic hydrogenation conditions to obtain optimal reaction conditions, and under the conditions, carrying out reaction on various 3, 3 '-dihydroxy nicotinic acid and 3, 3'-dihydroxy nicotinic acid to obtain the nerofloxacin chiral piperidylamine intermediate. The 2, 5-disubstituted pyridine quaternary ammonium salt is reduced into a tetrahydropyridine product, and the C5 site enantioselectivity of the product is excellent. The preparation method comprises the following steps: selecting methyl (R)-1-benzyl-5-hydroxy-1, 4, 5, 6-tetrahydropyridine-3-carboxylic acid methyl ester as a substrate, completely hydrogenating by using platinum dioxide hydrogen, and then carrying out methyl ester reduction, dehydroxylation, Mitsunobu reaction and protecting group removal to obtain a key chiral intermediate for industrial synthesis of a quinolone antibacterial drug nemonofloxacin with high enantioselectivity and high yield.

The utility model discloses a catalytic hydrogenation reactor for treating a biomass raw material with a high acid value and a high iodine value, and belongs to the technical field of oil product hydrogenation. The catalytic hydrogenation reactor comprises a reactor pressure-bearing container, an inner cylinder, an ash discharge port, a feeding assembly, a reaction assembly and a discharging assembly, the inner cylinder is arranged in the reactor pressure-bearing container, the feeding assembly and the reaction assembly are arranged in the inner cylinder, the reaction assembly comprises a ceramic tube bundle internal part, the discharging assembly is arranged above the inner cylinder, and the discharging assembly is arranged above the inner cylinder. The ash discharge port is formed in the center of the bottom of the reactor pressure-bearing container. By arranging the ceramic tube bundle internal part in the catalytic hydrogenation reactor, on one hand, the ceramic tube bundle internal part serves as a reaction assembly and has certain acid corrosion resistance, and on the other hand, the ceramic tube bundle internal part serves as a solid catalyst carrier, selective hydrogenation of high-acid-value and high-iodine-value biomass raw materials is achieved, the iodine value is effectively reduced, and coking of the high-iodine-value biomass raw materials in the reaction process is avoided; in addition, the acid value is maintained as far as possible while the iodine value is reduced, and the solid catalyst and the catalytic hydrogenation reactor are not corroded, so that the stability of the solid catalyst and the yield of the product are improved.

The invention discloses a magnetically separable reversed-phase catalyst, a preparation method thereof and application of the magnetically separable reversed-phase catalyst in hydrogenation upgrading recovery of aromatic polyester, and belongs to the technical field of reversed-phase catalysts and plastic recovery. The catalyst is formed by loading a metal oxide (MOx) on a metal carrier nickel, and is applied to hydrogenation recovery of aromatic polyester and conversion of aromatic polyester into high value-added aliphatic polyester. After dispersion, carrying out catalytic hydrogenation reaction on the aromatic polyester at a set temperature, a set rotating speed and a set hydrogen pressure, and completing conversion of the aromatic polyester after the reaction reaches a set time; according to the method, the aromatic polyester is completely converted into the fat polyester with high additional value by using the cheap and easily-separated reverse catalyst, so that the upgraded recycling of the polyester waste plastic is realized.

The invention discloses a short-Fe-C-bond Fe-based catalyst for catalyzing CO2 hydrogenation, a preparation method of the short-Fe-C-bond Fe-based catalyst and application of the short-Fe-C-bond Fe-based catalyst in preparation of C2 < + > high-added-value products, and belongs to the technical field of CO2 capture, utilization and storage. The catalyst is a carbon quantum dot doped Fe-based catalyst, and is prepared by the following steps: dissolving carbon quantum dots CQDs in an ethanol aqueous solution to obtain a CQDs dispersion liquid; and then adding cubic Fe2O3 nanoparticles, stirring for reaction, and drying to obtain the Fe-based catalyst with the short Fe-C bond. The short Fe-C bond Fe-based catalyst is simple to prepare and low in cost, can realize high-selectivity synthesis of C2 + products through one-step catalytic hydrogenation of CO2, and effectively reduces the selectivity of main C1 by-products CO and CH4. The invention develops a new regulation and control strategy for the electronic structure of the Fe-based catalyst for the CO2 hydrogenation catalytic reaction, provides a new thought for reasonably designing the catalyst with a directional synthesis function, and has a good application prospect in the field of CO2 capture, utilization and storage.

The invention discloses a Cu / ZrO2 catalyst with high Ov content, a preparation method of the Cu / ZrO2 catalyst and application of the Cu / ZrO2 catalyst in catalysis of CO2 hydrogenation for methanol preparation, and belongs to the technical field of CO2 capture, utilization and storage. The preparation method of the Cu / ZrO2 catalyst comprises the following steps: dissolving a Cu-containing precursor in water, carrying out ultrasonic dispersion, loading the Cu-containing precursor on a UIO-66 carrier by an equivalent-volume impregnation method, and drying to obtain a Cu / UIO-66 precursor; then, the Cu / UIO-66 precursor is subjected to carbonization treatment; and after cooling, carrying out oxidation treatment to prepare the Cu / ZrO2 catalyst with high Ov content. According to the invention, the Cu / ZrO2 catalyst is rapidly prepared by using a carbonization-oxidation-calcination technology for the first time, and excellent catalytic activity and stability are realized by limiting the size of Cu particles and adjusting the valence state of Cu by using the high Ov content of the Cu / ZrO2 catalyst. The prepared Cu / ZrO2 catalyst is stable in performance, so that the Cu / ZrO2 catalyst has good application prospect and value in the technical field of CO2 capture, utilization and storage.

The invention relates to the field of catalytic materials and discloses a copper-zinc-aluminum-alkylated graphite carbon combined catalyst as well as a preparation method and application thereof. The copper-zinc-aluminum-alkylated graphite carbon combined catalyst comprises a copper-zinc-aluminum catalyst and alkylated graphite carbon which are physically mixed, the alkylated graphite carbon is graphite carbon subjected to silane surface hydrophobic modification. The combined catalyst comprises a copper-zinc-aluminum catalyst and alkylated graphite carbon, and based on the hydrophobic property of the alkylated graphite carbon, in the reaction process of catalyzing CO2 hydrogenation to prepare methanol, the thermodynamic equilibrium limitation in the reaction of preparing methanol through carbon dioxide hydrogenation can be broken through by adjusting the equilibrium movement of element reaction, and the catalytic activity of the alkylated graphite carbon is improved. And meanwhile, agglomeration of metal particles can be effectively inhibited. Therefore, the combined catalyst of the present invention can exhibit efficient carbon dioxide conversion rate, excellent methanol selectivity and long-term stability.

The invention belongs to the technical field of carbon dioxide conversion application and catalyst fine synthesis, and particularly relates to a thermal catalyst for preparing CO through CO2 hydrogenation, a preparation method of the thermal catalyst and application of the thermal catalyst in methanol preparation through a CO2 two-step method. The thermal catalyst comprises an S, N-doped reduced graphene oxide carrier, and MoS2 and FexN which are loaded on the S, N-doped reduced graphene oxide carrier; the molar ratio of Mo in the MoS2 to Fe in the FexN is (0.5-3.0): 1; the Fe < x > N comprises Fe < N > and / or Fe < 3 > N < 2 >. The key point of the invention is to design and synthesize a MoS2 / FexN / S, N-rGO thermal catalyst, regulate and control the ratio of Mo to Fe so as to well exert the synergistic effect of Mo and Fe, and combine the effects of S and N-rGO carriers to reduce the activation energy of CO2, improve the conversion rate of CO2 and promote the generation of CO, so that CO2 hydrogenation can be efficiently catalyzed to obtain high-concentration CO, the CO selectivity is high, and a process for preparing methanol from CO is combined, so that the production cost is reduced. Therefore, the methanol yield of the CO2 two-step methanol preparation process is remarkably improved.

The invention relates to a continuous preparation method of a supported catalyst and application of the supported catalyst in catalysis of furfural hydrocracking. The method comprises the following steps: adding Cu (NO3) 2.3 H2O, Ce (NO3) 3.6 H2O, Mg (NO3) 2.6 H2O and Al (NO3) 3.9 H2O into deionized water to form a solution A; naOH and Na2CO3 are taken and dissolved in deionized water, and a solution B is formed; then respectively introducing the solution A and the solution B into a feeding pump, then introducing into a membrane dispersion microreactor, and mixing to form a precipitate; and washing, drying, calcining and reducing to obtain the catalyst Cu-Ce / MgO-Al2O3. The catalyst prepared by the invention is used in a reaction for catalyzing furfural hydrocracking to prepare 1, 2-pentanediol, and shows excellent catalytic activity and stability, the conversion rate of furfural is as high as 99%, and the yield of 1, 2-pentanediol reaches 44%.

The utility model belongs to the technical field of chemical solvent preparation, and particularly relates to a tetrahydrofuran purification device. The utility model provides a tetrahydrofuran purification device. The tetrahydrofuran purification device comprises a feed port, a catalytic hydrogenation reaction part, a gas phase discharge port, a liquid phase discharge port, a heavy component removal tower and an absorption tower. In the application, through the catalytic hydrogenation part, the impurity dihydrofuran in the tetrahydrofuran is hydrogenated to generate the tetrahydrofuran, the impurities n-butyraldehyde and isobutyraldehyde are hydrogenated to generate alcohols which are easily separated from the tetrahydrofuran, through determination, the content of the impurity dihydrofuran in the purified tetrahydrofuran is reduced to 3 ppm or below, the alcohols are separated in the heavy component removal tower, and the content of the tetrahydrofuran in the tetrahydrofuran is reduced to 3 ppm or below. The purity and the quality of tetrahydrofuran are effectively improved, and the purification device structure and the purification process are simple.

The application discloses a kind of ruthenium grafting manganese aluminum hydrotalcite and catalytic method for C02 hydrogenation preparation formic acid, belong to catalyst technical field, in the application, under the optimized reaction condition, with methanol:water mixture as solvent (5:1), total pressure is 60bar, 60 DEG C, reaction 24 hours, with temperature controller to be heated to the temperature required for reactor.When the temperature inside the reactor reaches the specified temperature, start stirring at a fixed stirring speed (200-800 revolutions / min), after the required reaction time, stop stirring and heating, and allow the reactor to cool to room temperature. The hydrogenation products were analyzed by high performance liquid chromatography, the conversion number (TON) of formic acid reached more than 8000; RuMnAl-LDH was prepared by coprecipitation method, and RuMnAl hydrotalcite catalyst was obtained by heating and activation in a muffle furnace. The preparation process is simple, and the raw materials are easy to obtain. The RuMnAl-LDH catalyst prepared by the application has good catalytic activity and stability in the catalytic hydrogenation of formic acid to formic acid reaction, and has wide application prospect.

The present invention relates to a Ru-Ni bimetallic catalyst for the selective hydrogenation of a quinoline organic hydrogen storage carrier, and a preparation method therefor and the use thereof. In the catalyst, carbon nitride is used as a carrier, and metal nanoparticles Ru and Ni serve as active components and are jointly loaded on the carbon nitride carrier; and the carbon nitride is prepared by mixing carbon tetrachloride, ethidene diamine and nano-silica, reacting same to obtain a carbon nitride polymer, then calcining same at 750-850ºC, performing a desilicification treatment, and then filtering and drying same. The catalyst provided in the present application has good catalytic hydrogenation performance in the selective hydrogenation of the quinoline organic hydrogen storage carrier and can achieve the omission of a solvent in a reaction system; the reaction is simple, green and environmentally friendly, and the gravimetric hydrogen storage density of the system can be maximally ensured when a quinoline compound is used as an organic hydrogen carrier; moreover, the catalyst also has a good cycling stability.

The invention discloses a synthesis method of 9-dichloromethylene-5-amino-benzonorbornene and an intermediate product, the synthesis method comprises the following steps: firstly, synthesizing a cyclization compound 1 as shown in a formula 1 from a cold solution of 6, 6-dichlorofulvene and 1, 4-benzoquinone under the action of a solution of a catalyst I, carrying out oximation reaction on the cyclization compound 1 prepared in the step a and hydroxylamine salt under an alkaline condition, and carrying out post-treatment to obtain the 9-dichloromethylene-5-amino-benzonorbornene. Under the action of a catalyst II, adding the oximate 2 prepared in the step b into a closed container, carrying out hydrogenation reduction to obtain 9-dichloromethylene-5-amino-benzo norbornene, and directly treating the reduction product with acid to obtain 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene. According to the method, the cyclization compound is oximated firstly, then the residual carbonyl and two double bonds on the ring are subjected to one-step reduction through catalytic hydrogenation, the working procedure is optimized, meanwhile, reduction by using expensive sodium borohydride is avoided, the method is short in synthesis route and suitable for industrialization, and the production cost is reduced.

The invention discloses a method for preparing isostearic acid by hydrogenation of a bio-based carrier catalyst, and relates to the technical field of oleochemical engineering and catalyst preparation, and the method comprises the following steps: S1, preparing a bio-based supported catalyst; s2, taking isomerized oleic acid as a raw material, and carrying out catalytic hydrogenation reaction under the action of a catalyst; s3, separating a product obtained after the hydrogenation reaction to obtain isostearic acid; according to the method for preparing isostearic acid by hydrogenation of the bio-based carrier catalyst, oyster shells are selected as a catalyst carrier, and specific pretreatment and high-temperature firing are performed, so that waste biomass resources are converted into a high-specific-surface-area calcium oxide carrier with a natural nanoscale sheet-shaped superposed three-dimensional space structure; high-value utilization of waste resources is achieved, so that the effects that the cost of raw materials of the catalyst is remarkably reduced and the carrier is environmentally friendly are achieved, and the high-activity non-noble metal hydrogenation catalyst is obtained by adopting copper nitrate solution impregnation and combining with a loading mode of subsequent hydrogen reduction.

The application discloses a catalyst for preparing methylaniline and a preparation method and application thereof, and belongs to the technical field of catalysts. The catalyst is prepared by modifying an activated carbon carrier with zirconium, cerium or nickel, treating the carrier with high-temperature nitrogen, loading active components Pd and pH-responsive polymers, solving the problems of low dispersion of the active components, easy poisoning and activity attenuation, and having good pH responsiveness and environmental adaptability. The preparation method optimizes a carrier modification process, adopts an impregnation method combined with timed stirring, controls reaction parameters, improves catalyst performance, realizes high selectivity and high yield of methylaniline, and has the advantages of high selectivity of the catalyst for methylaniline, inhibition of side reactions, adoption of a fixed bed reactor, simplification of operation, reduction of safety hazards, efficient reaction at a lower reaction temperature and pressure, and reduction of energy consumption and production cost.

The application discloses a method for preparing 6-hydroxy-8-chlorooctanoic acid ethyl ester by hydrogenation reduction of 6-carbonyl-8-chlorooctanoic acid ethyl ester. The carbonyl group of 6-carbonyl-8-chlorooctanoic acid ethyl ester is reduced to a hydroxyl group through a catalytic hydrogenation reduction reaction under high pressure, so that 6-hydroxy-8-chlorooctanoic acid ethyl ester is obtained. In the reaction process, strong acid, strong base and toxic substances are not involved, the catalyst used can be repeatedly used, the required equipment is not high, the process is simple, the obtained product has high purity and yield, and the method is favorable for large-scale production of enterprises, and provides a new preparation method which is simple and easy to realize, safe and stable, green and environmental protection, low in production cost and high in efficiency, and is suitable for the prior art and actual production.

The invention relates to a preparation method of a trace Fe optimized Ru nano-catalyst and application of the trace Fe optimized Ru nano-catalyst in hydrodechlorination reaction of parachlorophenol. The preparation method comprises the following specific steps: firstly, dissolving ruthenium chloride hydrate and ferric trichloride into ethylene glycol, adding PVP (Polyvinyl Pyrrolidone) into the solution, fully mixing, adjusting the pH value of the solution to 3-4, transferring into a glass bottle, and heating and reacting in an oil bath pan at 180 DEG C; and centrifuging, washing and drying the obtained product to obtain a black powdery solid, namely the Ru-Fe nano-catalyst. The hydrodechlorination process is carried out in a double-chamber electrolytic tank separated by a Nafion 117 membrane, an electrolyte is a Na2SO4 solution, a Ru-Fe electrode taking carbon cloth as a carrier is used as a working electrode, a Pt sheet is used as a counter electrode, and an Ag / AgCl electrode is used as a reference electrode. The Ru-Fe nano-catalyst provided by the invention has the advantages of stable structure, uniform metal distribution and excellent electron synergistic effect, and can efficiently catalyze hydrodechlorination of p-chlorophenol and generate cyclohexanol. The preparation process is simple, convenient and environment-friendly, has a good industrial application prospect, and is particularly suitable for green treatment and resource conversion of chlorine-containing organic wastewater.

The present application belongs to the technical field of biological oil catalytic hydrogenation, and particularly relates to a bio-based oil-soluble molybdenum catalyst, a preparation method and application thereof. The preparation method of the bio-based oil-soluble molybdenum catalyst provided by the present application comprises: mixing a molybdenum source, a bio-based linear organic acid with a carbon atom number of 16 or more and an additive, heating and reacting, and separating to obtain the bio-based oil-soluble molybdenum catalyst; the additive is selected from at least one of tetrahydro naphthalene and decahydro naphthalene. The bio-based oil-soluble molybdenum catalyst green material obtained by the present application has optimal activity and high dispersibility when used, can realize more sufficient mixing with raw materials, forms nano high-dispersed molybdenum sulfide through sulfuration, and realizes high-efficiency hydrogenation refining of oil products through the joint action of hydrogen and sulfur, while reducing the sulfur, oxygen and metal residues in the product oil.

The utility model discloses a fixed bed reactor for continuous flow efficient catalytic hydrogenation, which comprises a reactor main tank body, and an upper partition plate, a plurality of middle partition plates and a lower partition plate are fixed in the reactor main tank body; a plurality of vertical reaction cylinders are inserted into the corresponding through holes of the upper partition plate, the middle partition plate and the lower partition plate, and the outer side walls of the vertical reaction cylinders are welded and fixed on the inner side walls of the corresponding through holes; the upper partition plate is located at the upper part of the reactor main tank body, the lower partition plate is located at the lower part of the reactor main tank body, and the middle partition plate is located at the reactor main tank body between the upper partition plate and the lower partition plate; in the continuous reaction process, heat exchange media with different temperatures or heat exchange media with the same temperature flow in the upper heat exchange cavity, the middle heat exchange cavity and the lower heat exchange cavity, so that the reaction temperature of each stage is controlled, the heat exchange effect is met, and the reaction effect can reach the optimal state.

This invention discloses a method for preparing and analyzing trans-4-aminocyclohexylacetic acid. The preparation method is as follows: 4-nitrophenylacetic acid undergoes catalytic hydrogenation in a solvent, followed by filtration. The filtrate is then treated with acid to obtain a 4-aminophenylacetic acid salt solution. The collected catalyst is activated. The 4-aminophenylacetic acid salt solution is mixed with isopropanol, barium hydroxide, tetrabutylammonium bromide, 18-crown ether-6, and dibutyl phthalate. The activated catalyst is then added to initiate a catalytic hydrogenation reaction. After the reaction, the reaction solution is cooled and filtered. The resulting solid is mixed with a preheated dilute sulfuric acid solution and stirred to form a slurry. The mixture is then filtered, and the filtrate is neutralized and filtered again. The collected filtrate is concentrated and crystallized. The crystallized precipitate is washed and dried to obtain trans-4-aminocyclohexylacetic acid. The method provided by this invention has high reaction efficiency, mild conditions, and is suitable for industrial production. It yields high product purity and reliability. Furthermore, the analytical method provided by this invention is accurate and reliable.

The invention discloses a preparation method of a metal organic framework catalyst and application of the metal organic framework catalyst in biomass furfural hydrogenation, and belongs to the technical field of catalytic hydrogenation. The preparation method of the metal organic framework catalyst comprises the following steps: S1, dissolving cobaltous acetate, L-glutamic acid and phosphomolybdic acid in distilled water to obtain a solution marked as a solution A; dissolving 1, 3, 5-benzenetricarboxylic acid (BTC) in ethanol to obtain a solution B, pouring the solution B into the solution A, stirring, and centrifuging to collect a precipitate; and S2, calcining the precipitate in an inert atmosphere to obtain the metal organic framework catalyst. The specific steps of applying the catalyst to the furfural hydrogenation reaction are as follows: adding the prepared catalyst and furfural into deionized water, performing heating and pressurizing reaction through a hydrogenation reaction kettle to obtain a solution, extracting the solution with ethyl acetate, and performing GC quantitative detection on the product after the extraction reaction. The method is mild in reaction condition, has an efficient furfural hydrogenation effect, and can completely convert FFA within 2 hours under the condition that 50 mg of catalyst is added.

The present application relates to the technical field of catalytic hydrogenation reaction, and discloses a preparation method and application of an organic phosphine shell modified nanocatalyst, which comprises the following steps: adding a carbon carrier in an alcohol solvent and ultrasonic dispersion, then adding a chloroplatinic acid containing alcohol solution, and stirring at 0-15 DEG C; subsequently, an organic phosphine containing alcohol solution and a reducing agent are added, and the stirring is continued; finally, rotary evaporation is carried out, and drying is performed to obtain the nanocatalyst; the nanocatalyst is a platinum catalyst with a core-shell structure loaded on the surface of the carbon carrier. By introducing the organic phosphine ligand to the surface of the nanometer platinum particles, the core-shell structure nanoparticles with a flexible organic phosphine ligand modified shell are constructed, the adsorption and desorption strength and configuration of the active site electronic structure, the reaction microenvironment, the reactants and the intermediate state of the reaction interface are regulated, and the selective and efficient hydrogenation of the aromatic hydrocarbon containing nitro or carbon-carbon double bond is realized.

Disclosed is a method for preparing oxetan-2-ylmethanamine, which belongs to the field of organic synthesis. [2-(1-ethoxyethoxy)methyl]propylene oxide is used as an initial raw material, and reacted in the presence of potassium tert-butoxide and trimethylsulfoxonium iodide; the resulting product is reacted with a sulfonyl compound and triethylamine; the resulting product is reacted with a compound of phthalimide; the resulting product is reacted with an amino group-containing compound, to obtain oxetan-2-ylmethanamine. The method according to the disclosure allows for an overall yield of not less than 30% in scale-up production (kilogram level), which is higher. Moreover, compared with the traditional method for preparing oxetan-2-ylmethanamine, a palladium-carbon catalytic hydrogenation step is not required, and dangerous chemical-sodium azide is not required in the method according to the disclosure. Thus, the method has high safety, low production cost, simple operations, and thereby is suitable for industrial production.

The invention discloses a fesoterodine intermediate preparation method, and belongs to the technical field of chemical medicine raw material medicine synthesis, 6-(hydroxymethyl)-4-phenylchroman-2-ol and diisopropylamine are used as starting materials to prepare a fesoterodine intermediate, an inert conversion reagent is used, and the reaction temperature is controlled to be 30-60 DEG C, so that the fesoterodine intermediate is obtained. On the other hand, the excessive diisopropylamine reacts with an inert conversion reagent, the excessive diisopropylamine is converted into an excessive state which does not react with the product, and the excessive diisopropylamine is prevented from reacting with the product to generate a large amount of various impurities; a reducing agent and an inert conversion reagent are introduced to be combined, so that the problem of impurity generation caused by palladium catalytic hydrogenation reduction is avoided.

The application discloses a self-supporting cobalt nanosheet catalytic electrode and a preparation method and application thereof, the active component of the catalytic electrode is a Co nanosheet structure grown on a carrier foam nickel, the corrugated Co nanosheet loaded on the substrate is uniformly distributed, so that the catalyst has a larger specific surface area and an electrochemical active area, the porous nanosheet structure contributes more active sites, promotes the diffusion of active substances and is also helpful to the transmission of protons in electrolyte, thereby improving the hydrogenation performance of electrocatalytic reaction; the catalytic electrode is used in electrocatalytic hydrogenation of quinoline to synthesize 1,2,3,4-tetrahydroquinoline, and has the characteristics of green environmental protection and mild high efficiency; the Co nanomaterial electrolytic reaction efficiency of the application is relatively high, and can reach more than 80% in the first hour, which indicates that the Co nanomaterial has good application potential in many chemical reactions, and the selectivity and conversion rate are also relatively ideal.

The invention discloses a pure silica zeolite DD3R hydrogenation catalyst as well as a preparation method and application thereof. The pure silica zeolite DD3R hydrogenation catalyst takes a DD3R molecular sieve as a carrier, and a Cu element and a Pd element are loaded on the carrier; in the pure silica zeolite DD3R hydrogenation catalyst, the mass ratio of the Pd element is 0.2 wt%-0.6 wt%, and the mass ratio of the Cu element is 0.2 wt%-0.7 wt%. The preparation method comprises the following steps: adding the structure-directing agent, the silicon source and the mineralizing agent into deionized water, and uniformly mixing; adding a palladium source and a copper source, then adding a seed crystal, and crystallizing for a certain time; and carrying out suction filtration, washing, drying, roasting and the like on the obtained sample to prepare the pure silica zeolite DD3R hydrogenation catalyst. The catalyst prepared by the invention is used for a reaction for removing trace acetylene in ethylene through thermocatalytic hydrogenation, has high specific surface area, high catalytic activity, high selectivity and high thermal stability, and can still keep relatively high catalytic activity at a high space velocity.

The application discloses transparent polyethylene-butylene rubber granules, a preparation method and application thereof. Butadiene monomers are obtained by an anionic polymerization method to obtain BR raw glue liquid, and the BR raw glue liquid is subjected to catalytic hydrogenation to obtain polyethylene-butylene glue liquid; after the polyethylene-butylene glue liquid is concentrated by falling film evaporation, the transparent glue particles (EBBR) with a volatile matter content of less than or equal to 0.35% (mass fraction) are obtained by deep devolatilization and extrusion granulation through a double screw extruder, the EBBR has the characteristics of a wide molecular weight, non-crystallization, good elasticity, high strength and low volatile matter, and has excellent physical properties after being blended with PP and vulcanized, and simultaneously has good processing performance.

The invention relates to the field of petroleum resin catalytic hydrogenation decolorization, and discloses a petroleum resin dechlorination decolorization method which comprises the following steps: (A) in the presence of a dechlorination catalytic adsorbent and in a protective atmosphere, performing a dechlorination reaction on a petroleum resin mixed solution to obtain a dechlorination product; (B) in the presence of a hydrogenation catalyst, mixing the dechlorination product with hydrogen for hydrogenation reaction to obtain a hydrogenation product; wherein the petroleum resin mixed liquid comprises a petroleum resin raw material and a diffusion liquid; the diffusion liquid is selected from at least one of C6-C12 monocyclic alkane, monocyclic aromatic hydrocarbon and C5-C10 paraffin. According to the method, the diffusion liquid is adopted for dechlorinating the petroleum resin under the protective atmosphere, so that the petroleum resin raw material is more convenient to convey and diffuse on the surface and inside the catalyst, the chlorine content in the petroleum resin is greatly reduced, the corrosion of chlorine to the device is prevented, the service life of the device is prolonged, and the operation risk is reduced.

The invention belongs to the technical field of carbon monoxide catalysts prepared through CO2 thermocatalytic hydrogenation, and provides a high-entropy oxide catalyst based on precursor valence engineering and a preparation method and application thereof. The catalyst is a CuZnMgNiCo-O high-entropy oxide with a rock salt crystal structure, Co exists in a Co < 3 + > / Co < 2 + > mixed valence state form, and the catalyst is prepared from Co2O3 through mechanical ball milling and a high-temperature solid phase method. According to the method, high-concentration oxygen vacancies are successfully constructed in situ in the catalyst, the ratio of Co < 3 + > to Co < 2 + > is optimized, and a rich HEO / Co3O4 phase interface is formed. The prepared catalyst shows excellent performance far superior to that of a CoO derivative catalyst in a reverse water gas shift reaction, has high CO2 conversion rate, CO selectivity close to 99%, apparent activation energy as low as 43 kJ / mol and excellent thermal stability, and provides a high-performance and easily-prepared catalytic material for efficient resource utilization of CO2.

The application discloses a method for preparing ketone compounds by catalytic hydrogenation of cellulose based on a crude hydrogen atmosphere. The method uses cellulose as a raw material, water as a solvent, and activated carbon loaded Pd as a catalyst. The total pressure of the hydrogen source gas containing carbon monoxide and carbon dioxide is 0.5-4.0 MPa, the temperature is 230-260 DEG C, and the reaction time is 1-6 h, so that ketone compounds are obtained as main products. The volume percentage content of carbon monoxide and carbon dioxide in the hydrogen source gas containing carbon monoxide and carbon dioxide is 20%-67%. The reaction provided by the application has the characteristics of renewable raw materials, low reaction process cost, environmental friendliness, mild reaction conditions, high product selectivity, and high economic value of product added value.