Deactivation of CuO/ZnO and CuO/ZrO2 catalysts for oxidative methanol reforming

E. D. Schrum; T. L. Reitz; H. H. Kung

doi:10.1016/S0167-2991(01)80202-0

Deactivation of CuO/ZnO and CuO/ZrO₂ catalysts for oxidative methanol reforming

E. D. Schrum, T. L. Reitz, H. H. Kung

Northwestern University

Research output: Chapter in Book/Report/Conference proceeding › Chapter

12 Citations (Scopus)

Abstract

The activity for oxidative methanol reforming (OMR) as a function of time-on-stream was determined for CuO catalysts supported on ZnO or ZrO₂. The ZnO-supported samples deactivated more quickly than the ZrO₂-supported samples during 18 hour reactions at 225 °C. X-ray diffraction characterization showed that copper oxide particle size increases during the reaction, which implied that loss of CuO surface area is a cause of deactivation. The data suggested that the increase in CuO particle size was accompanied by sintering of the support, which was facilitated by the presence of water vapor at elevated temperatures.

Original language	English
Title of host publication	Studies in Surface Science and Catalysis
Pages	229-235
Number of pages	7
Volume	139
DOIs	https://doi.org/10.1016/S0167-2991(01)80202-0
Publication status	Published - Jan 1 2001

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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AB - The activity for oxidative methanol reforming (OMR) as a function of time-on-stream was determined for CuO catalysts supported on ZnO or ZrO2. The ZnO-supported samples deactivated more quickly than the ZrO2-supported samples during 18 hour reactions at 225 °C. X-ray diffraction characterization showed that copper oxide particle size increases during the reaction, which implied that loss of CuO surface area is a cause of deactivation. The data suggested that the increase in CuO particle size was accompanied by sintering of the support, which was facilitated by the presence of water vapor at elevated temperatures.

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