摘要:
A conjugate addition reaction between an α,β-unsaturated ketone compound and a carbamate compound is carried out to synthesize a β-aminoketone, a salt or a hydrate salt of a transition metal of Groups 7 to 11 of the Periodic Table of Elements being present in the reaction system as the catalyst. The novel method and the catalyst are capable of synthesizing the β-aminoketone by the Aza-Michael reaction with high yield and efficiency.
摘要:
Bismuth- and phosphorus-containing naphtha reforming catalysts, methods of making such catalysts, and a naphtha reforming process using such catalysts.
摘要:
The present invention discloses synthesis gas catalysts, and methods for making such catalysts, that are active for promoting partial oxidation of light hydrocarbons to CO and H2. The catalysts comprise a support and an active metal. The catalysts may further comprise a promoter and halide or a rare earth oxyhalide. The present invention further discloses a method for producing synthesis gas by net partial oxidation of light hydrocarbons by contacting O2 and light hydrocarbons in the presence of a synthesis gas catalyst as previously described. The present invention also describes a method for extending the life of a synthesis gas catalyst by contacting the catalyst with a halide. A method for making middle distillates from light hydrocarbons by partial oxidation of light hydrocarbons over a synthesis gas catalyst as previously described and Fischer-Tropsch reaction is also disclosed.
摘要:
A multimetallic reforming catalyst and the preparation process thereof are disclosed. Said catalyst comprises the following components on the basis of mass percent: 0.01-2.0 of a Group VIII metal, 0.01-5.0 of a Group IVA metal, 0.01-10.0 of Eu, 0.01-10.0 of Ce, 0.10-10.0 of a halogen, and 63.00-99.86 of a refractory inorganic oxide. This catalyst has relatively high activity and selectivity, low carbon deposition rate and long lifetime for reformation of naphthas.
摘要:
The present invention relates to a novel hydrophobic multicomponent catalyst useful in the direct oxidation of hydrogen to hydrogen peroxide and to a method for the preparation of such catalyst. More specifically, this invention relates to a novel hydrophobic muticomponent catalyst comprising a hydrophobic polymer membrane deposited on a Pd containing acidic catalyst, useful for the direct oxidation of hydrogen by oxygen to hydrogen peroxide, an a method for preparing the same.
摘要:
A process for the conversion of a hydrocarbon load containing paraffin, naphthene and aromatic hydrocarbons having 5 to 12 carbon atoms into aromatic compounds, which entails contacting the load with a catalyst under temperature and pressure conditions to produce the aromatic compounds, the catalyst containing:a matrix consisting of 0 to 100% by weight of .eta. transition alumina, the remaining weight percentage of the matrix, up to 100%, consisting of .gamma. transition alumina, andat least one doping metal selected from the group consisting of alkali metals and alkaline-earth metals,at least one halogen selected from the group consisting of fluorine, chlorine, bromine and iodine,at least one noble metal selected from the platinum group, andat least one promoter metal selected from the group consisting of tin, germanium, indium, gallium, thallium, antimony, lead, rhenium, manganese chromium, molybdenum and tungsten,the catalyst having previously been hydrothermally treated at a temperature of 300 to 1,000.degree. C. in a gaseous atmosphere containing steam, the atmosphere also containing chlorine in a molar content of greater than 0 but no more than 20%.
摘要:
The present invention relates to a catalyst comprising :a matrix consisting of a mixture of .eta. transition alumina, .gamma. transition alumina, andat least one doping metal chosen from the group made up of titanium, zirconium, hafnium, cobalt, nickel, zinc, the lanthanides, the alkali metals and alkaline-earth metals,at least one halogen chosen from the group made up of fluorine, chlorine, bromine and iodine,at least one noble metal from the platinum group, andat least one promoter metal chosen from the group made up of tin, germanium, indium, gallium, thallium, antimony, lead, rhenium, manganese, chromium, molybdenum and tungsten.
摘要:
Ethanol is produced economically by a gas phase carbonylation of methanol with carbon monoxide followed by a hydrogenation. Specifically, the inventive process comprises:(a) carbonylating methanol in a gas phase with carbon monoxide in a carbonylation reactor, said carbon monoxide being optionally in admixture of hydrogen, in the presence of a rhodium catalyst comprised of a rhodium compound and a second metallic component selected from the group consisting of an alkali metal, an alkaline earth metal, a transition metal and a mixture thereof, and supported on an inert material, and a halide co-catalyst under mild carbonylation conditions and a high GHSV(Gas Hourly Space Velocity) of methanol to produce a mixture of acetic acid and methyl acetate;(b) separating from the production mixture in a distillation column the acetic acid as a high boiling fraction thereof, and a mixture of the methyl acetate and the co-catalyst as a low boiling fraction thereof;(c) further separating said methyl acetate and the co-catalyst from the low boiling fraction and recycling the separated co-catalyst to the carbonylation reactor;(d) hydrogenating the separated methyl acetate with hydrogen gas in a hydrogenation reactor in the presence of a copper-containing hydrogenation catalyst to produce ethanol at a high yield.
摘要:
In a process for the production of ethanol and n-propanol by conversion of methanol with carbon monoxide and hydrogen in the presence of a catalyst containing cobalt, platinum, at least one halogen or halide, and an organic phosphine or phosphite, the improvement comprising the halogen or halide being chlorine or a chloride, and the phosphine or phosphite being bidentate. In addition, the conversion is carried out at pressures of 200 to 800 bars in the presence of 5 to 25% by weight of water, based on the methanol.
摘要:
Catalytic hydroreforming process, particularly for the production of gasoline of high clear octane number, comprising hydrogenating a hydrocarbon charge in the presence of a catalyst containing an alumina carrier, a first metal selected from ruthenium, iridium and rhodium, a second metal, different from the first metal, and selected from ruthenium, palladium and osmium, a third metal consisting of indium, and a halogen.