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

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

OSTI ID:209885

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

---

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, 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
SPECIFIC SURFACE AREA
SPECTRA
SURFACE PROPERTIES
WATER GAS
X-RAY DIFFRACTION
ZINC OXIDES