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- W2004690238 abstract "X-Ray photoelectron spectroscopy has been employed to examine copper-silicon catalysts used in the synthesis of methylchlorosilanes. A freshly prepared catalyst shows the eixstence of copper silicide on the surface along with some oxidized silicon. Partial use of the catalyst results in surface enrichment of silicon on the copper silicide, in which copper exists in the Cu2+ state as evidenced by the characteristic shake-up satellite peaks. This supports an earlier proposed mechanism which involves an intermediate complex of methyl chloride with Cu2+ as the active state. Zinc, as an additive in the catalyst, segregates on the surface of the freshly prepared catalyst, but is reduced significantly during the course of the reaction. Storage of the catalyst under ambient conditions has been found to produce a surface coating of cupric oxide." @default.
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- W2004690238 title "Surface characterization of copper-silicon catalysts*1" @default.
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- W2004690238 doi "https://doi.org/10.1016/0021-9517(85)90151-4" @default.
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