Effect of rhodium precursor on Rh/Al/sub 2/O/sub 3/ catalysts

Journal Article · Fri Jan 01 04:00:00 EST 1982 · J. Chem. Phys.; (United States)

OSTI ID:5935684

Worley, S D; Rice, C A; Mattson, G A; Curtis, C W; Guin, J A; Tarrer, A R

The infrared spectra of the CO/Rh/Al/sub 2/O/sub 3/ system have been examined following several different means of preparing the supported rhodium catalyst. Rhodium precursor materials including RhCl/sub 3/ x 3H/sub 2/O, Rh(NO/sub 3/)/sub 3/ x 2H/sub 2/O, Rh/sub 6/(CO)/sub 16/, (Rh(OCOCH/sub 3/)/sub 2/)/sub 2/, and Rh/sub 2/(SO/sub 4/)/sub 3/ have been compared as to their tendencies to produce upon reduction the various CO/Rh/Al/sub 2/O/sub 3/ species generally attributed to this catalytic system. The nitrate and carbonyl precursors are most easily reduced to rhodium metal. The acetate and sulfate anions poison the Rh/Al/sub 2/O/sub 3/ surface through decomposition during reduction leading to very minimal CO adsorption. The catalytic properties of Rh/Al/sub 2/O/sub 3/ could be quite dependent upon the nature of rhodium precursor chosen.

• Research Organization: Department of Chemistry, Auburn University, Auburn University, Alabama 36849
• OSTI ID: 5935684
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 76:1; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
INFRARED SPECTRA
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PRECURSOR
REFRACTORY METALS
RHODIUM
SPECTRA
TRANSITION ELEMENTS