摘要:
The present invention relates to a pillared silicate compound comprising a layered silicate structure, and bridging metal atoms located between adjacent silicate layers of the silicate structure, wherein said bridging metal atoms form at least one covalent bond to each of the adjacent silicate layers, as well as a process for the preparation of a pillared silicate compound, and further includes a pillared silicate compound obtainable and or obtained according to said process, as well as a method of catalyzing a chemical reaction comprising the step of contacting one or more chemical compounds with the any of the aforementioned pillared silicate compounds.
摘要:
A supported methanation catalyst and a process for utilizing the catalyst are disclosed. The catalyst yields a product containing a major proportion of methane and some ethane. Methanation of a gaseous feed stream containing from about 10 to about 50 mole percent carbon monoxide, and from about 1.0 to about 3.0 times as much hydrogen as carbon monoxide, is effected at elevated temperature and high pressure continuously over a prolonged period of time, while a conversion of carbon monoxide in excess of 80 mole percent is maintained. Thermal stability at elevated temperature and pressure permits essentially continuous use of the catalyst for extended periods of time without time-consuming shutdowns. High conversion of gaseous feed and thermal stability of catalyst permits economical process design which utilizes a minimal recycle, if any.The supported catalyst consists essentially of a complex of oxides of nickel, copper and molybdenum which complex is reduced on the support prior to or during use. The complex of oxides consists of from about 5 to about 20 percent by weight molybdenum oxide, and from about 5 to about 40 percent by weight nickel oxide, each amount based on total catalyst, present in a weight ratio of nickel oxide to copper oxide in the range from 1:1 to about 9:1, and preferably in the range from about 1 to about 3.
摘要:
This invention relates to a method of producing an aromatic hydrocarbon compound from byproducts of aromatic carboxylic acid and/or aromatic carboxylic acid alkylester preparation processes using hydroprocessing under conditions of high temperature and high hydrogen pressure in the presence of a catalyst, and to a hydroprocessing catalyst used therein.
摘要:
The present invention relates to a process for isomerizing olefins in olefin-comprising hydrocarbon mixtures having from 4 to 20 carbon atoms at temperatures of from 20 to 200° C. and pressures of from 1 to 200 bar in the liquid phase in the presence of a heterogeneous catalyst, wherein a catalyst comprising from 1 to 20% by weight of nickel in oxidic form and from 1 to 20% by weight of at least one element of group VIB on an aluminum oxide support is used.
摘要:
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous support which has the following specific physical properties; BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å with or without modifiers of one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi.
摘要:
Cyclohexenyl and alkenyl aromatic compounds, such as cyclohexene and styrene, are prepared by a process comprising contacting a corresponding cyclohexyl or alkyl aromatic carboxylic acid, such as cyclohexyl carboxylic acid or 2-phenyl propionic acid, with a decarboxylation catalyst of the formulaM.sub.a M'.sub.b O.sub.xwherem is copper or a combination of copper and molybdenum, andM' is at least one promoter element, such as a Group IA element.
摘要:
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous support which has the following specific physical properties; BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å with or without modifiers of one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi.
摘要:
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin streams. The catalysts are prepared by depositing nickel on a porous support which has the following specific physical properties; BET surface area of from 30 to about 100 m2/g, total nitrogen pore volume of from 0.4 to about 0.9 cc/g, and an average pore diameter of from about 110 to 450 Å with or without modifiers of one or more elements selected from the group consisting of Cu, Re, Pd, Zn, Mg, Mo, Ca and Bi.