摘要:
A catalyst consisting essentially of nickel, a promoter selected from the group consisting of barium and uranium and a calcium phosphate support having a Ca:P atomic ratio in the range of 1.4:1 to 2.3:1, is formed by impregnating a calcium phosphate gel with suitable compounds of nickel and either barium or uranium. The resulting catalysts are useful in steam reforming processes for producing methane.
摘要:
Oxidation and reduction reactions using metal oxyhalide catalysts of the general formula ABO.sub.3.sub.-f X.sub.f having perovskite-type crystal structures in which A and B are each cations of at least one metal and a portion of the type B cations are catalytically active; X is fluoride or chloride; and f is about from 0.01 to 2.5.
摘要:
A catalyst for removing acetylenic impurities from gaseous organic product streams, comprising at least Fe and Ni, other elements from Groups 8, 1b, 2b, 4b, 6b and 7b of the Periodic Table, an alkaline earth metal and an alkali metal.
摘要:
Process for hydrodealkylating alkylaromatic hydrocarbons using a catalyst comprising at least two metals deposited on a carrier, a first of these two metals being selected either from the group consisting of cobalt, ruthenium, osmium, palladium, rhodium, iridium and platinum or from the group consisting of chromium, molybdenum, tungsten and manganese, and the second of these two metals being selected from zinc, cadmium, gallium, indium, thallium, manganese, copper, silver, gold, yttrium, titanium, niobium, tentalum, chromium, molybdenum, tungsten, rhenium, germanium, tin and lead.
摘要:
The invention relates to a process for the preparation of an ammonia synthesis catalyst based on fused and reduced iron oxide, with or without traces of a promoter oxide of aluminum, calcium, potassium, magnesium or silicon, in which the fused and reduced iron oxide is aftertreated with an aqueous solution of a cerium salt or with an aqueous solution of a mischmetal salt, including a cerium salt.
摘要:
The yield in oxidative dehydrogenation of organic compounds is improved by having a surfur promoter present either as part of the catalyst or added to the reaction with the reactants.
摘要:
Unsaturated-hydrocarbyl coumaryl ethers are prepared from the reaction of unsaturated-hydrocarbyl hydroxyaryl ethers with ethylenic compounds in the presence of an atmosphere comprising an oxygen-containing gas and a catalyst system comprising a metal or metal salt independently selected from Group VIII of the Periodic Table.
摘要:
Disclosed herein is an attrition resistant catalyst support comprising a carrier such as alumina coated with a silica coating which contains a rare earth metal oxide, and optionally alumina, such that the atom ratio of rare earth metal to silicon to aluminum in the coating is 1:0.1-2.0:0-20. A catalytic metal oxide such as copper oxide or manganese oxide may be included in the coating or added later in an amount such that the atom ratio of catalytic metal to rare earth metal to silicon to aluminum in the coating is 0.6-1.5:1:0.1-2.0:0-20. The final catalyst may be promoted with a small amount of a noble metal such as palladium to improve low temperature activity.