Water-gas shift reaction on CuO-ZnO catalysts: I. Structure and catalytic activity

Journal Article · Tue Oct 31 23:00:00 EST 1995 · Kinetics and Catalysis

OSTI ID:209884

Kalchev, M G; Andreev, A A ^[1]; Zotov, N S ^[2]

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1. Institute of Catalysis, Sofia (Bulgaria)
2. Institute of Applied Mineralogy, Sofia (Bulgaria)

The physicochemical properties of CuO-ZnO samples with different CuO contents were investgated by a complex of physical methods: DSC, XPS, EPR, TPR, and XRD. The samples containing {approximately}25 wt % CuO exhibited a maximum catalytic activity in the water-gas shift reaction. The catalytic activity was attributed to copper ions aggregated on the highly dispersed and defective CuO surface and to an anion-modified ZnO surface. Aggregates of copper ions, formed on metal species and probably modified with hydroxyl and carbonate groups, were shown to play a decisive role in the catalytic activity of the samples containing more than 15 wt % CuO.

• OSTI ID: 209884
• Journal Information: Kinetics and Catalysis, Journal Name: Kinetics and Catalysis Journal Issue: 6 Vol. 36; ISSN 0023-1584; ISSN KICAA8
• Country of Publication: United States
• Language: English

Related Subjects

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