Abstract:
The invention relates to a shell catalyst containing ruthenium as an active metal, alone or together with at least one other metal of the auxiliary group IB, VIIB or VIII of the periodical system of the elements (CAS version), and applied to a carrier containing silicon dioxide as a carrier material. The invention also relates to a method for producing said shell catalyst, and to a method for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols, using the inventive shell catalyst. The invention further relates to the use of the inventive shell catalyst for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols.
Abstract:
Catalysts suitable for hydrogenating organic compounds, essentially containi ng 65 to 80 % nickel calculated as nickel oxide, 10 to 25 % silicon calculated as silicon dioxide, 2 to 10 % zirconium calculate d as zirconium oxide, 0 to 10 % aluminium calculated as aluminium oxide, with the proviso that the sum of the silicon dioxide and al uminium oxide contents is at least 15 %, with the percen tages by weight in relation to the total mass of the catalyst, obtainable by the a ddition of an acid aqueous solution of nickel, ziconium and, if desired, aluminium salts to a basic aqueous solution or suspension of silico n compounds and, if desired, aluminium compounds, the pH of the mixture thus obtained being reduced to at least 6.5 and subsequently adjusted to 7 to 8 by the addition of a further basic so lution, isolation of the solid thus precipitated, drying, shaping and calcinating, i n addition a process for producing the catalysts and the ir use in the production of medicinal white oil, highly pure medicinal paraffins and low-b oiling-point non-aromatic hydrocarbon mixtures.
Abstract:
In the proposed process for producing 1,4 butane diol, 2,5 dihydrofurane is reacted in a single step in the presence of water and hydrogen at a temperature of 20 to 300 DEG C and a pressure of 1 to 300 bar with the aid of a hydrogenating catalyst.
Abstract:
PCT No. PCT/EP97/00960 Sec. 371 Date Sep. 3, 1998 Sec. 102(e) Date Sep. 3, 1998 PCT Filed Feb. 27, 1997 PCT Pub. No. WO97/32944 PCT Pub. Date Sep. 12, 1997In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100 DEG C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(lxh) in the presence of free hydrogen.
Abstract:
PCT No. PCT/EP97/00960 Sec. 371 Date Sep. 3, 1998 Sec. 102(e) Date Sep. 3, 1998 PCT Filed Feb. 27, 1997 PCT Pub. No. WO97/32944 PCT Pub. Date Sep. 12, 1997In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100 DEG C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(lxh) in the presence of free hydrogen.
Abstract:
A catalyst packing which can be produced by vapor deposition and/or sputtering of at least one substance active as catalyst and/or promotor onto woven or knitted fabrics or sheets as support material is used in a process for catalytic distillation in which a heterogeneously catalyzed reaction is combined with a simultaneous distillation or rectification over the catalyst packing.
Abstract:
PCT No. PCT/EP95/02335 Sec. 371 Date Dec. 27, 1996 Sec. 102(e) Date Dec. 27, 1996 PCT Filed Jun. 16, 1995 PCT Pub. No. WO96/00203 PCT Pub. Date Jan. 4, 1996Described is a method of producing 1,4-butanediol, the method calling for 2,3-dihydrofuran to be decomposed in a single stage over a hydrogenation catalyst in the presence of water and hydrogen at a temperature of 20 to 300 DEG C. and a pressure of 1 to 300 bar and in neutral or acid conditions.
Abstract:
The invention relates to a shell catalyst containing ruthenium as an active metal, alone or together with at least one other metal of the auxiliary group IB, VIIB or VIII of the periodical system of the elements (CAS version), and applied to a carrier containing silicon dioxide as a carrier material. The invention also relates to a method for producing said shell catalyst, and to a method for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols, using the inventive shell catalyst. The invention further relates to the use of the inventive shell catalyst for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols.
Abstract:
Shell catalyst comprises ruthenium alone or in combination with group IB, VIIB or VIII transition metal(s), applied to silicon dioxide carrier. The amount of active metal is less than 1 wt.% of the total catalyst weight, and at least 60 wt.% of the active metal is present in the catalyst shell to a depth of 200 mu m, determined by scanning electron microscopy-electron probe X-ray microanalysis (SEM-EPMA) energy-dispersive X-ray spectroscopy (EDXS)). Independent claims are included for: (1) the preparation of the shell catalyst comprising singly or repeatedly soaking the carrier material with a solution of ruthenium(III)-acetate, solely or together with a solution of at least an additional salt of a group IB, VIIB or VIII transition metal, followed by drying and reducing, where the solution of at least an additional salt of metals of the transition metal groups IB, VIIB or VIII of the periodic system of elements is applied in one or more soaking steps together with the solution of ruthenium(III)-acetate or into one or more soaking steps separately from the solution of ruthenium(III)-acetate; and (2) a procedure for the hydrogenation of an organic compound, preferably for the hydrogenation of a carbocyclic aromatic group to a carbocyclic aliphatic group or for the hydrogenation of aldehydes to alcohols using the shell catalyst.