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CO hydrogenation catalyzed by magnesia-supported osmium derived from Os/sub 3/(CO)/sub 12/

Journal Article · · J. Catal.; (United States)
OSTI ID:5589952
A catalyst prepared by the reaction of (Os/sub 3/(CO)/sub 12/) with the surface of magnesia exhibited infrared spectra in the carbonyl region suggestive of the formation of the supported cluster (HO/sub S//sub 3/(CO)/sub 10/OMg). After oxidation in air, the sample exhibited a spectrum indicative of a mononuclear osmium carbonyl complex. The catalyst, initially present in either theoriginal or oxidized form, was active for CO hydrogenation; the products at low conversions were C/sub 1/-C/sub 4/ paraffins formed at a rate of about 10/sup -3/ molecules/(Os atom middle . s) at 300/sup 0/C and 31.8 atm with a 4:1 H/sub 2/:CO ratio. The infrared spectrum of the used catalyst is suggestive of a trinuclear osmium carbonyl cluster, and we propose that a cluster is the catalytically active species.
Research Organization:
Univ. of Delaware, Newark
OSTI ID:
5589952
Journal Information:
J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 71:2; ISSN JCTLA
Country of Publication:
United States
Language:
English