Eggshell catalyst composites containing tungsten oxide or tungsten oxide hydrate
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机译:包含氧化钨或氧化钨水合物的蛋壳催化剂复合材料
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摘要
Provided are catalyst composites useful for the production of olefins during a metathesis reaction, as well as methods of making and using the same. Certain methods comprise a support comprising at least about 90% by weight silica; and an eggshell layer on the support comprising about 0.25 to about 10 wt. % tungsten in the form of tungsten oxide or tungsten oxide hydrate, based on the total weight of the catalyst composite.
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