Mechanism of the reverse water gas shift reaction over Cu/ZnO catalyst

Journal Article · Sun Mar 01 00:00:00 EST 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90223-5· OSTI ID:7244632

Fujita, Shinichiro; Usui, Masahito; Takezawa, Nobutsune ^[1]

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1. Hokkaido Univ., Sapporo (Japan)

The reverse water gas shift reaction (RWGS) and the reaction with CO{sub 2} alone were carried out over a Cu/ZnO catalyst. The surface of the catalyst was characterized by N{sub 2}O titration, XPS, and FT-IR spectroscopy. CO{sub 2}dissociated to give CO and the surface oxygen species. Surface Cu(I) oxide was formed by the reaction with CO{sub 2}. The oxygen species were hydrogenated to H{sub 2}O and the surface Cu(I) oxide was reduced to metallic Cu. It is suggested that the RWGS reaction proceeds through surface oxidation and reduction with CO{sub 2} and H{sub 2}, and the dissociation of CO{sub 2} is the rate determining step.

• OSTI ID: 7244632
• Journal Information: Journal of Catalysis; (United States), Vol. 134:1; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
01 COAL, LIGNITE, AND PEAT
COPPER
CATALYTIC EFFECTS
HYDROGEN PRODUCTION
WATER GAS PROCESSES
SHIFT PROCESSES
CHEMICAL REACTION KINETICS
ZINC OXIDES
ABSORPTION SPECTROSCOPY
CARBON DIOXIDE
CARBON MONOXIDE
CATALYSTS
COPPER OXIDES
DISSOCIATION
FOURIER TRANSFORMATION
HYDROCARBONS
INFRARED RADIATION
NITROUS OXIDE
OXIDATION
PHOTOELECTRON SPECTROSCOPY
REDUCTION
STEAM REFORMER PROCESSES
SURFACE PROPERTIES
TITRATION
X-RAY SPECTROSCOPY
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
INTEGRAL TRANSFORMATIONS
KINETICS
METALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
REACTION KINETICS
REFORMER PROCESSES
SPECTROSCOPY
TRANSFORMATIONS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC COMPOUNDS
080104* - Hydrogen- Production- Water Gas Processes
010408 - Coal
Lignite
& Peat- C1 Processes- (1987-)