Studies on Mechanism of Methanol Decomposition over Pd/CeO2 Catalyst

Abstract

Abstract: The interaction between hydrogen and CeO₂ support and Pd/CeO₂ catalysts is characterized by TPR and H₂-TPD, while the adsorption and decomposition of methanol over CeO₂ and Pd/CeO₂ catalysts were studied by in-situ FTIR technique, then a new model of the mechanism for the methanol decomposition over Pd/CeO₂ catalyst was proposed. It was found that the lattice oxygen of CeO ₂ was active towards oxidation of the adsorbed methanol to form formate species, which were then reduced by the hydrogen produced and activated on Pd. The anion Cl^- promoted the interaction between hydrogen and Pd/CeO₂ catalyst, so a synergistic effect between Pd and CeO₂ was proved by their action of lattice oxygen and hydrogen.

Key words: Methanol decomposition, CeO₂, Pd/CeO₂, Reaction mechanism

CLC Number:

O643

TrendMD:

YANG Cheng, DONG Qing-Nian, REN Jie, SUN Yu-Han . Studies on Mechanism of Methanol Decomposition over Pd/CeO₂ Catalyst[J]. Chem. J. Chinese Universities, 2002, 23(12): 2329.

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Studies on Mechanism of Methanol Decomposition over Pd/CeO₂ Catalyst

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