Water-gas shift reaction on CuO-ZnO catalysts: II. Role of a precursor in the formation of an active surface

Journal Article · Wed Nov 01 00:00:00 EST 1995 · Kinetics and Catalysis

OSTI ID:209885

Andreev, A A; Kalchev, M G; Andreeva, Ch ^[1]

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1. Institute of Catalysis, Sofia (Bulgaria); and others

The relation between the catalytic activity and physicochemical properties of CuO-ZnO catalysts for the water-gas shift reaction prepared from precursors of different structures was studied. The suggestion has been made that the active surface contains aggregates of octahedrally coordinated Cu{sup 2+} ions at the surface of finely dispersed CuO, metallic copper, or ZnO formed with the participation of OH{sup -} and CO {sup 2-}{sub 3} ligands. The active surface was formed during the incomplete decomposition of the aurichalcite phase in the precursor. Evidently, the active copper species was formed at the metallic copper surface under the action of water vapor and carbon dioxide.

• OSTI ID: 209885
• Journal Information: Kinetics and Catalysis, Vol. 36, Issue 6; Other Information: PBD: Nov-Dec 1995; TN: Translated from Kinetika i Kataliz; 36: No. 6, 902-909(1995)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
01 COAL, LIGNITE, AND PEAT
SHIFT PROCESSES
CATALYSTS
COPPER OXIDES
CATALYTIC EFFECTS
SURFACE PROPERTIES
ZINC OXIDES
WATER GAS
X-RAY DIFFRACTION
SPECIFIC SURFACE AREA
CRYSTAL LATTICES
SPECTRA