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A Method To Prepare A Catalyst For The Reduction Of Carbon Monoxide By Hydrogen

Patent Number: SU884555

Inventor(s): Wilhelm Fogg, Jurgen Koch and Hermann Glaser (Germany),

Applicant(s): Hoechst AG (DE)

Requested Patent: SU884555

Application Number: SU19772546250 19771127

Priority Number(s): DE19762653985 19761127

IPC Classification: B01J23/10; B01J23/72; B01J23/78; B01J23/84

EC Classification: B01J23/00Z, B01J23/10, B01J23/32, B01J23/66, B01J23/74, B01J23/76, B01J23/89G, B01J37/03, C07C1/04D4

Equivalents: BE861198, CA1096847, CS213333, DE2653985, FR2372132, GB1554082, IT1090587, JP53067688, NL7712509, PL202450, US4186112, ZA7707012

Application of 25.11.1977

Priority of ---

Published: 23.11.1981 in B.I. No. 43

Abstract

This invention relates to the preparation of a catalyst for the reduction of carbon monoxide by hydrogen to produce a mixture of hydrocarbons containing 1 to 4 carbon atoms. Iron and/or copper are used as the active component. The catalyst is synthesized by reacting a salt of hydrocyanic acid of general formula

MeI[MeII(CN)6]x

where MeI and MeII = metals, x = ligand number, with hydrogen or a mixture of hydrogen and carbon monoxide (molar ratio from 3:1 to 1:2) at a temperature of 280C to 350C and a pressure of 4 to 30 absolute atmospheres.

For the purpose of increasing the catalyst activity, a cyanide of the said general formula is used in which MI is copper and MII is manganese, or

MI = iron and MII is one of the following

  1. silver, or zinc, or cobalt, or manganese,
  2. a mixture of copper with iron and nickel, or a mixture of copper with cerium, or a mixture of copper with manganese (x = 1-15),
  3. a mixture of silver with cerium, or a mixture of silver with iron (x = 1)
  4. a mixture of calcium or magnesium with NH4 (x = 1).

Catalyst for reducing carbon monoxide by means of hydrogen so as to obtain a mixture consisting substantially of C1-C4-hydrocarbons. The catalyst is made by precipitating a salt of a hydrocyanic acid of the general formula MeIMeII(CN)x, separating and drying the salt so precipitated and forming it. In the formula, the cationic component MeI stands for at least one of the elements Ce, Cu, Co, Ni, Fe, Mn, Zn, Ag and K or a mixture of these elements, or for Ca or Mg in admixture with (NH)4; the anionic component MeII stands for at least one of the elements Cu, Co, Ni, Fe, Mn, Zn and Ag or a mixture of these elements; and x stands for the sum of the metal valencies; MeI and MeII are not permitted to stand for iron alone, or for a mixture of iron with copper.