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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 8
BKCSDE 23(8)
August 20, 2002

Title	Support Effects of Copper Containing Catalysts on Methanol Dehydrogenation
Author	Kwang-Deog Jung, Oh-Shim Joo
Keywords	Methanol dehydrogenation, Deactivation, Pulse reaction, ZnO reduction
Abstract	CuO/ZnO, CuO/SiO,sub>2, and CuO/ZrO₂ catalysts were prepared for investigating the support effects on methanol dehydrogenation. It was found that the conversion of methanol was proportional to the copper surface area on Cu/ZnO catalysts and was independent on that on Cu/ZrO₂ and Cu/SiO₂. The highest copper surface area was obtained with the Cu/ZrO₂ (9/1). The unusual deactivation of the Cu/ZnO, which showed the highest selectivity among the catalysts tested, was observed. Pulse reaction with methanol indicated that the lattice oxygen in ZnO could be removed by forming CO₂ in the catalytic reaction, supporting that the ZnO reduction was responsible for the severe deactivation of the Cu/ZnO.
Page	1135 - 1138
Full Text	PDF

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