Process for making high activity transition metal catalysts

Details Process for making high activity transition metal catalysts Process for making high activity transition metal catalysts

1980-03-21

1982-03-16

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252438, 252439, 518714, B01J 2102, B01J 2704, B01J 2724

Patent

active

043200303

ABSTRACT:
A catalyst particularly useful in conversion of CO--H.sub.2 mixtures is prepared by preparing an intimate mixture of a compound containing molybdenum, vanadium and/or tungsten or a mixture of two or more of the said molybdenum, vanadium, and tungsten compounds in a melt of ammonium thiocyanate-thiourea, or a mixture of the two, heating the melt in a non-oxidizing atmosphere at temperatures sufficient to evolve gases for a time to convert the melt to a solid mass, calcining the solid in an inert atmosphere to prevent over reduction, and then passivating the catalyst, after cooling with inert gas, with a very dilute stream containing oxygen, until no further exotherm is noted. The mass may be broken up, or ground and pelletized, in process as desired for convenience in handling, and the product is desirably further heated in this fashion.

REFERENCES:
patent: 2490488 (1949-12-01), Stewart
patent: 3663431 (1972-05-01), Wagner
patent: 3764649 (1973-10-01), Kurtak et al.
patent: 3876755 (1975-04-01), Kurtak et al.
patent: 4199439 (1980-04-01), Gatsis

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