Support for silver catalyst in ethylene oxide production, methods for preparing the same, silver catalyst prepared therefrom, and use thereof

摘要

The present invention relates to a support for silver catalyst used in the ethylene oxide production, a preparation method for the same, a silver catalyst prepared from the same, and its use in the ethylene oxide production. The silver catalyst produced from the silver catalyst support has an improved activity, stability and/or selectivity in the production of ethylene oxide by epoxidation of ethylene.

主权项

1. An alumina support comprising:
a backbone having a main crystal phase that comprises alpha-alumina, wherein said alumina support comprises: a specific surface area of 3.0 m2/g or smaller; a pore volume between 0.3 ml/g and 0.8 ml/g; an alkaline-earth metal content between 0.05 wt % and 1.8 wt % of the weight of the alumina support, calculated based on the weight of elemental alkaline-earth metal; and a fluorine content on the surface of the alumina support between 0.3 at. % and 8.0 at. %.