单词 | Hydrogenation |
例句 | 1, Process Description Catalytic hydrogenation of contaminated organic waste streams is carried out at moderate temperatures and pressures. 2, Its catalytic performance was evaluated by liquid-phase hydrogenation ofp-chloronitrobenzene. 3, The operation of coking gasoline hydrogenation plant is difficult. 4, Preparation of methyl isobutyl carbinol(MIBC)was studied by catalytic hydrogenation of methyl isobutyl ketone(MIBK)in liquid phase on Raney nickel catalyst. 5, A multi-metal alloy catalyst for hydrogenation of acetonitrile to ethylamine was prepared using hydrazine hydrate and potassium borohydride as the co- reductant . 6, The highly selective hydrogenation process for the removal of olefins can completely replace the conventional clay treating process for treating the reformate of CCR unit. 7, Many studies of catalysts for hydrogenation of natural oils have been made, in which Cu-Ni bibasic catalyst and Ni unitary catalyst are the two mainstreams. 8, The effects of triacetoneamine concentration on hydrogenation and amination were discussed. 9, However, the hydrogenation process is difficult because of extensive dehalogenation during the catalytic reduction of the compound and increased the costs. 10, The results show that hydrogenation can refine the aging microstructure of superalloy. 11, The THFA product of hydrogenation in common pressure has been used in enzymatic reaction and expressed the same result as that of THFA from Sigma,(http:///hydrogenation.html) the cost of reduction by hydroborates is lower. 12, The results in the off-gas and featured high hydrogenation activity and stability. 13, Food producers use hydrogenation to keep fat from becoming rancid. 14, The hydrogenation saturation of aromatics and selective ring opening of cycloalkane were the most important process during deep dearomatization of diesel oil. 15, The Preparation of Palladium diacetate catalyst for NBR hydrogenation was Synthesized. 16, The continuous catalytic hydrogenation process which prepares N-(3-pentyl)-3, 4-dimethylaniline from 3,4-dimethylaniline and 3-pentanone is described. 17, Metal oxides which are present on the catalyst surface are converted in a conditioning step into metal sulphides , which provide the hydrogenation component of the bi-functional catalyst. 18, Firstly, indoline - 3 - acetamide ( 9) was prepared from indole - 3 - acetic acid by catalytic hydrogenation, esterification and aminolysis. 19, For most reduction reactions concerned, dehalogenation occurred seriously in hydrogenation reaction. Better selectivity was achieved and purer products were prepared in the reduction by Fe. 20, The mutual influence of HDN of indole or quinoline and hydrogenation of naphthalene were also studied in the simultaneous hydroprocessing of feedstock. 21, Conjugated unsaturation of abietic resin acids can be removed through catalytic hydrogenation to overcome the shortcomings of oxidation and color degradation in rosin. 22, This paper describes one vapor leak near-miss accident analysis of diesel hydrogenation reactor in hydrogenation Unit, and analyzes the causes and prevention measures. 23, The trend, market and techniques of bright stock were introduced, especially the hydrogenation process of bright stock production developed by FRIPP was also presented. 24, The modification of rare earth elements to palladium catalysts leaded to great promotion on both the activity and stability in selective gas hydrogenation of acrylonitrile to propionitrile. 25, The effect of PPD with greater side-chain carbon number is better than the one with low carbon number, while the opposite is true for the hydrogenation base oil. 26, The catalyst prepared by said invented method has high conversion rate and high selectivity for synthesizing cycloolefine by means of aromatic selective hydrogenation. 27, A new presulfidation process of hydrotreating catalyst in the hydrogenation is introduced. 28, The cis- or trans-2, 5-disubstituted tetrahydrofurans were provided by the hot decomposition and then hydrogenation of tricycle compounds produced. 29, Majority of these amines had yields more than 85%in in-situ liquid-phase hydrogenation N-alkylation, especially while ethanol as the alkylated reagent. 30, L-Asp6-Ibuprofen was prepared by mixture anhydrides methods and DCC/HOBt methods. The benzyl group of the product was deprotected by catalytic hydrogenation. 31, The main technical challenge UOP′s two-stage hydrogenation technology needs to resolve is that strong exothermic reaction will result in too high temperatures on the catalyst bed. 32, The residual ebullated bed hydrogenation technique commonly used abroad has a good potential in processing sour crude oil and metal-bearing crude. 33, In this dissertation, Ir-catalyzed asymmetric hydrogenation of quinoline derivatives, pyridine derivatives and exocyclic enamines have been studied. 34, The catalytic properties of these catalysts in hydrogenation of diacetone alcohol and their electric catalytic properties as a fuel cell electrode were studied. 35, In the process of hydrogenation Our main problem is not to determine the reaction end point, may I ask you about the way to judge a good finish without excessive hydrogenation Triacontanol arising. 36, We are now mainly intermittent hydrogenation, hydrogenation of now there are small workshops alcohol dehydrogenase of hydrogenation and the hydrogenation of linalool. 37, The principles, the methods of the technology of non-noble metal hydrogenation catalysts' sulfurization, and the choice of vulcanizing agent were summarized. 38, A new Ni-supported catalyst for the hydrogenation of furfural alcohol(FA)to tetrafurfuralalcohol(THFA)was developed, and the related experimental studies were carried out. 39, Diethyl 1, 2 - DEE was synthesized in catalytic hydrogenation from diethyl phthalate as raw material. 40, Hydrogenation activity, heat resistance, anti poisoning ability for benzene hydrogenation were determined in a microreactor GC system. 41, The sulfur tolerance of nickel metal catalysts in aromatic hydrogenation has been studied systematically on the base of nickel active unit in this paper. 42, The present invention relates to selective hydrogenation process of methyl methoxybenzoate to synthesize anisic aldehyde,(http:///hydrogenation.html) and belongs to the field of fine chemical catalysis technology. 43, CO hydrogenation catalyzed in heterogeneous system by supported bimetallic cluster has been studied in the light of the effect of reaction temperature, time and support. 44, In this dissertation, Ir-catalyzed asymmetric hydrogenation, asymmetric transfer hydrogenation and asymmetric hydrosilylation of quinoline derivatives have been studied. 45, The new research progress in synthesis ofp aminophenol reduction , catalytic hydrogenation reductionreduction from nitrobenzene was reviewed. 46, The situation of the improving hydrogenation catalyst for alkyne series in recent over 10 years in France petroleum institute was summarized. 47, A new inequilateral organic polyamine, 2-aminoethyl-bi(3-aminopropyl)amine, was synthesized by the additional and hydrogenation reaction of aminoacetonitrile with acrylonitrile. 48, Hydrogenation of naphthalene and tetralin can be improved by the high pressure employed. 49, Application of soldered finned tube to convection section of high hydrogenation heater in refinery is proved to be safe and reliable through industrial practice. 50, Numerous applications of two phase catalysis to hydroformylation, hydrogenation and other organic reactions are also described. 51, The hydrogenation process has the more advantages on environment protection than iron powder method, and has better quality. 52, The development and research of several catalysts for selective hydrogenation of phenylacetylene (PA) are introduced in details. 53, It was suggested that normal pressure hydrogenation of acetone, an one-step process, be used, plant for production of MIBK be constructed as soon as possible, to meet the increasing need of MIBK. 54, SEBS possesses better properties than SBS due to selective hydrogenation of the unsaturated carbon-carbon double bonds in the molecular chain of SBS. 55, The invention discloses a catalyst carrier for coal liquification oil hydrogenation on boiling bed and the preparation method. 56, The results indicated that the high dispersive method can enhance the activity of the catalyst for hydrogenation and the ability to inhibit coke formation. 57, Nanosized nickel based catalysts can be used to carry out the hydrogenation of styrol and benzophenone at normal temperature and pressure. 58, Diethyl 1, 2 - cyclohexanedicarboxylate ( DEE ) was synthesized in catalytic hydrogenation from diethyl phthalate as raw material. 59, The activation energy of titanium-tritium is obviously higher than that of titanium hydrogenation and deuteration from comparing with the reported data. 60, Synthesis of o phenylenediamine from o nitroaniline by catalytic hydrogenation at lower pressure was studied. 61, The results of TPR indicated that metal sulfides were the hydrogenation centers, after presulfiding the acid strength of catalyst increased, but the total acid quantity reduced. 62, The diolefins and alkenyl aromatics are very unstable components which can give gums by polymerization. In giving olefins and alky aromatics the hydrogenation improves the product quality. 63, A lube oil hydrogenation catalyst and its preparation are disclosed. 64, Sevoflurane is synthesized from aceton by vapor phase catalytic fluorination, vapor phase catalytic hydrogenation, chloridization and fluoromethylation, which gives a new synthetic method. 65, The necessity of C_3 hydrogenation unit existence in front depropanizer front hydrogenation flow of ethylene plant is studied and fully discussed. 66, In this paper, gas phase catalytic hydrogenation technology to the preparation ofm-toluidine from m-nitrotoluene was studied. 67, The catalytic performance was evaluated during the selective hydrogenation of acetylene to ethylene. The properties of alloy were characterized by TEM and TPD. 68, Abstract: Application status and trends in hydrodesulfurization ( HDS ) and olefine hydrogenation catalysts are reviewed. 69, The invention is characterized on short process flow, simple operation, etc, therefore, we can use the present ceresin wax hydrogenation devices to produce refining microcrystalline wax. 70, A magnetically stabilized bed reactor with amorphous NiREP alloy catalyst was used for the hydrogenation of light reformate to produce reformulated gasoline(RFG). 71, Catalyst and method for preparing 1, 5 pentanediol by hydrogenation of 1,(http:///hydrogenation.html) 5 dimethyl glutarate. 72, The resins of Shengli vacuum residue were blent with saturates, aromatics from Shengli vacuum residue and paraffin from SSOT hydrogenation residue. 73, In furfural alcohol production the liquid-phase hydrogenation process is being replaced by the gas-phase hydrogenation in many foreign countries. 74, A highly active copper catalyst for synthesis of o-(p-)toluidine via vapor-phase catalytic hydrogenation was prepared. 75, Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05 %. 76, However, the direct process, cracking method and hydrogenation of chlorosilanes were valuable because of less cost, high yield and convenience of continuous manufacturing. 77, The effects of the organic impurities such as formaldehyde, methanol and lower alcohols on the hydrogenation of2 - butynediol are studied. 78, Application status and trends in hydrodesulfurization ( HDS ) and olefine hydrogenation catalysts are reviewed. 79, Based on vacuum residual oil hydrodesulfurization plant of some refinery, simulates and optimizes typical hydrogenation plant. 80, Current quotation process for hydrogenation reactor has been analyzed and the main affecting factor is the weight of pipe flange and the internals of the reactor. 81, In this article, the recent application in recent years of metal complexes composed of binaphthyl derivatives in asymmetric hydrogenation of prochiral alkenes, ketones and imines are reviewed. 82, The Oxenin hydrogenation reaction in low temperature and high hydrogen pressure favors the improvement of the reaction selectivity. 83, When non-noble metal catalysts are selected for selective hydrogenation of diolefin, full-range FCC gasoline hydrogenation process is preferred. 84, Chiral carbonyl iron systems have seldom been used in asymmetric transfer hydrogenation of aromatic ketones. 85, The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied. 86, The causes for deactivation of the catalysts for liquid-phase hydrogenation of furfural to furfurol were investigated by means of XRF, XRD and SEM. 87, Moreover, catalytic hydrogenation can be used to the reduction of a variety of organic compounds, such as nitro, carbonyl, amino, aromatic and heteroaromatic compound, hydroxy group and carboxy group. 88, The article introduces the development procedure of butylene dimerization hydrogenation techniques by which producing alkylates and their development situation home and abroad in recent years. 89, Methods: Second - hydrogenation, distillation under high vacuum, recrystallization, hydrolyze - tion under acid condition, and oxidation. 90, Several kinds of ruthenium - catalyzed organic reactions were reviewed: hydrogenation, oxidation, isomerization, metathesis. 91, This paper reviews the development in the application of catalysts to the selective hydrogenation of alkynes and dienes. 92, Method Topotecan hydrochloride was synthesized from camptothecin by improved hydrogenation oxidation and the Mannich reaction. 93, A series of industrial catalysts for hydrogenation of acid - free benzaldehyde were prepared by co-precipitation method. 94, Especially it introduces the parameter of the cross aldol condensation and side-reaction controlling, the midterm products separation, and catalyzed hydrogenation. 95, Recent progress in study of cobalt based CO hydrogenation catalysts and their applications to synthesis of alcohol, olefine and long chain hydrocarbons are presented. 96, This method provided technical support for characterization of heavy gas oil and the investigation of hydrogenation mechanism of polycyclic aromatic compounds. 97, Enantioselective hydrogenation of isophorone and kinetic resolution of 3,3,5-trimethylcyclohexanone over Pd catalysts in the presence of S-proline. 98, The characteristics and application of the branched chain explosion of hydrocracking hydrogenation recycle gas and the relevant combustible gases were systematically studied. 99, A method for the synthesis of hexylene glycol by catalytic hydrogenation from diacetone is presented. 100, Methyl cis - cinnamate was synthesized from ethyl trans - cinnamate by bromination, dehydrobromination, esterification and catalytic hydrogenation. 101, Method for preparing trifluorochloroethylene by catalytic hydrogenation and dechlorination of 1, 1, 2-trifluoro-2, 2, 1-trichloroethane through. 101, try its best to gather and create good sentences. 102, This paper studies the production process of -- Nitroanisole by liquid-phase hydrogenation. 103, The technologies and processes available to manufacture these products are by fractionation, hydrogenation and interesterification . 104, The commercial test of the selective hydrogenation catalyst RDD 1 at Liaoyang Chemical Fibre Company is introduced. 105, The effect of the calcinatory temperature, the contents of nickel and magnesium on the performances of selective hydrogenation catalysts was investigated. 106, The acid modified kaolinite has strong surface activity, high adsorbability of catalyst surface and hydrogenation activity. 107, LVI lube base oil with low pour point, high viscosity and good stability can be produced by means of hydrogenation acid removal, furfural treatment and hydrotreatment. 108, The new hydrogenation analysis pyrolysis technology of microstructural analysis for olefine plastic evidence has been reviewed and it's application also has been introduced in this paper. 109, Benzyl chloride and isobutylaldehyde were transformed into muguet alcohol through phase-transfer reaction and catalytic hydrogenation. 110, This article details the characteristics of thermo - tube air preheater and the application on the high-pressure hydrogenation reactor. 111, Nitrogen compounds inhibited both the two parallel reactions for HDS process: hydrogenation (HYD) and hydrogenolysis (HYG), with inhibition on then former. 112, The synthesis of 1,4-cyclohexanedimethanol from dimethyl terephthalate by two-stage liquid-phase hydrogenation was studied. 113, The recent progress in catalytic hydrogenation of chloronitrobenzene to chloroaniline is reviewed. 114, The said catalyst was a good hydrogenation catalyst for adiponitrile. 115, The quality of diesel oil producing was advanced by isomery pour point depression technique applying in hydrogenation unit in Harbin Petroleum Company Branch of PetroChina. 116, The structure of fatty acids, can be changed by hydrogenation, high temperature for long time, etc. ,() and cis fatty acid is fatty acid is turned to trans fatty acid (TFA). 117, Advantageous in high activity, good selectivity and long operation cycle, the C_2 hydrogenation isothermal reactor ER-424A/B has a unique hydrogenation effect. 118, Mass transfer in a trickle bed is calculated for the hydrogenation of diolefine over fibrous catalyst. 119, The present invention features the multiple phase selective hydrogenation process to synthesize anisic aldehyde with methyl methoxybenzoate. 120, This article reviews the study about heterogeneous noble metal catalysts for hydrogenation of aromatic compound in recent years. 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 131, is a online sentence dictionary, on which you can find nice sentences for a large number of words. 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, |
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