A combination of two catalysts, Au/TiO2 and TS-1 were used to catalyze the demanding reaction of butene epoxidation in an aqueous solution using molecular oxygen under very mild reaction conditions. Peroxy initiator was not necessary but carbon monoxide as a sacrificial reductant was needed. Carbon monoxide conversions increase with time on stream suggesting the generation of a highly active aqueous phase CO oxidation catalyst.

中文翻译：

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Au/TiO2+TS-1悬浮液催化1-丁烯水相环氧化反应

Au/TiO2 和 TS-1 两种催化剂的组合用于在非常温和的反应条件下使用分子氧在水溶液中催化丁烯环氧化的苛刻反应。不需要过氧引发剂，但需要一氧化碳作为牺牲还原剂。一氧化碳转化率随着运行时间的增加而增加，表明生成了高活性水相 CO 氧化催化剂。