Method for reduction of carbon dioxide, catalyst for the reducti

Details Method for reduction of carbon dioxide, catalyst for the reducti Method for reduction of carbon dioxide, catalyst for the reducti

1993-02-17

1994-09-13

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

4234151, 4234182, 423437R, C01B 3118

Patent

active

053466799

ABSTRACT:
A catalyst for the reduction of carbon dioxide into carbon monoxide includes tungsten sulfide alone or at least one catalyst support selected from among alumina, silica, activated carbon, zeolite, iron oxide, zirconia, titania, ferrite, yttria thoria, lanthania, neodymia and activated clay and tungsten sulfide deposited on the support. The catalyst is produced, for example, by a method including the steps of adding the support to an aqueous solution of ammonium tetrathiotungstate, an aqueous ammoniacal solution of it or an acid solution of it, drying the resultant solution and heating the resultant dried solid in a current of hydrogen, nitrogen, argon or helium, thereby decomposing the solid.

REFERENCES:
patent: 3429679 (1969-02-01), Friedman et al.
patent: 3479149 (1969-11-01), Frilette
patent: 4265868 (1981-05-01), Kamody
patent: 4514517 (1985-04-01), Ho et al.
patent: 4583993 (1986-04-01), Chen
"Introduction to Physics for Scientists & Engineers" by F. S. Bueche, 2nd ed., McGraw-Hill Co. 1975 p. 126.
"Preparation & Purification of Carbon Dioxide & Carbon Monoxide" by R. P. A. Sneeden, vol. 8, Pergamon Press pp. 2-14 (1982).

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