Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
Alumina support, a process for preparing the support, a silver catalyst prepared from the support, and use thereof
An alumina support comprises alpha-alumina as the main crystal phase of its backbone, and having a specific surface area of no higher than 3.0 m2/g, a pore volume ranging from 0.3 ml/g to 0.8 ml/g, an alkaline earth metal content ranging from 0.05% to 2.0% by weight of the support, wherein the support has such properties that treating the support with an aqueous oxalic acid solution having a concentration ranging from 0.4% to 2.0% by weight and having twice the weight of the support for 30 minutes can produce a leach liquor having an aluminum content of no higher than 60 μg/mL, a sodium content of no higher than 20 μg/mL, and a silicon content of no higher than 40 μg/mL. Processes for preparing the alumina support, silver catalysts comprising the alumina support, and methods of preparing ethylene oxide by ethylene oxidation using the silver catalyst are also disclosed herein.
China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
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B01J B01J B01J B01J B01J C07D Y02P B01J B01J B01J B01J B01J B01J
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Jianshe Shujuan Jinbing Zhixiang Jun
Chen Wang Li Zhang Jiang