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In situ Ga K edge XANES study of the activation of Ga/ZSM-5 prepared by chemical vapor deposition of trimethylgallium

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The activation of a dimethylgallium/ZSM-5 precursor to well-defined reduced and oxidized species is studied by in situ Ga K edge XANES. The precursor is prepared by chemical implanting of trimethylgallium on acidic HZSM-5. Subsequent reduction leads to charge-compensating Ga+ species. Direct oxidation of the trimethylgallium precursor leads to various forms of gallium oxide and regeneration of Brønsted acid protons. Oxidation of the reduced Ga+ species yields predominantly to GaO+ species. The GaO+ species exhibit a much higher H2/D2 exchange activity than reduced Ga+ species.

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Correspondence to Emiel J.M. Hensen.

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Hensen, E.J., García-Sánchez, M., Rane, N. et al. In situ Ga K edge XANES study of the activation of Ga/ZSM-5 prepared by chemical vapor deposition of trimethylgallium. Catal Lett 101, 79–85 (2005). https://doi.org/10.1007/s10562-004-3753-x

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  • DOI: https://doi.org/10.1007/s10562-004-3753-x

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