Low temperature oxidation of CO over supported PdCl2-CuCl2 catalysts |
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| Authors: | Dong Jun Koh Jae Hwal Song Sung-Won Ham In-Sik Nam Rae-Woong Chang Eun Duck Park Jae Sung Lee Young Gul Kim |
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| Affiliation: | (1) Environmental Catalysis Research Team, Research Institute of Industrial Science & Technology (RIST), San 32 Hyoja Dong, 790-330 Pohang, Korea;(2) Department of Chemical Engineering, School of Environmental Engineering, Pohang University of Science and Technology (POSTECH), San 32 Hyoja Dong, 790-330 Pohang, Korea;(3) Present address: Chemical Engineering Department, Kyung-ilUniversity, Korea |
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| Abstract: | PdCl2-CuCl2 catalyst supported on activated carbon was examined for the low temperature oxidation of CO. The catalyst developed in the present study was active and stable at ambient conditions if water were existing in the feed gas stream. The addition of Cu(NO3)2 into the PdCl2-CuCl2 catalyst significantly enhanced the CO oxidation activity. X-ray diffraction study revealed that the role of Cu(NO3)2 was to stabilize active Cu(II) species, Cu2Cl(OH)3, on the catalyst surface which maintains the redox property of palladium. When HC1 and SO2 were also existing in the feed, they easily inactivated the catalyst. It was found that HC1 and SO2 inhibited the formation of active Cu(II) species on the catalyst surface. |
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| Keywords: | Carbon Monoxide Oxidation Low Temperature Oxidation Supported PdCl 2-CuCl2 Wacker-type Catalysts |
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