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DOI: 10.1039/A604962A (Paper) Reference Section for: J. Chem. Soc., Faraday Trans., 1997, 93, 169-174

IR study on H/D isotope exchange reactions of formate and methoxy species with D2 on ZrO2

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Feng Ouyang, Junko N. Kondo, Ken-ichi Maruya and Kazunari Domen

Abstract

H/D isotope exchange reactions of adsorbed formate [HCOO(a)] and methoxy [CH3O(a)] species with D2 on ZrO2 have been investigated by FTIR spectroscopy. The H/D exchange reaction of the formate proceeded only in the presence of gaseous D2 [D2(g)] and not with surface OD groups. The rate determining step was concluded to be the activation of D2(g) withan activation energy of 95±8 kJ mol-1 (473–573 K). On the other hand, methoxy species exchanged H atoms in the methylgroup with the surface OD groups, even in the absence of D2(g). The activation energy was measured to be 127±8 kJ mol-1 (523–623 K).

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