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The probable reaction pathways for propylene epoxidation with O2 and H2 in the presence of trimethylamine on trimethylsilylated Au-Ba(NO3)2/titanosilicate catalyst are discussed (see figure). The use of trimethylamine as a gas-phase promoter for nanoparticulate gold catalysts leads to a direct one-stage production of propylene oxide (PO) with steady space–time yields comparable to values for current industrial ethylene oxide production.
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Chowdhury et al. (2005) studied this question.
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