Guard catalyst and a process for its preparation
AssigneesChina Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
InventorsXiaohong Kang, Kui Wang, Weizheng Dong, Qinghe Yang, Li Zhu
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Abstract
A guard catalyst, comprising an alumina support and molybdenum and/or tungsten and nickel and/or cobalt supported on the alumina support, wherein the total ammonia integral adsorption heat of said alumina support does not exceed 25 J/g, the percentage taken up by the ammonia integral adsorption heat of the ammonia differential adsorption heat greater than 100 kJ/mol does not exceed 10% of the total ammonia integral adsorption heat. Compared to the catalysts of the prior art, the guard catalyst has higher catalytic activity, less coke deposit, lower reduction rate of pore volume, better stability of activity, and higher strength.
Claims19
A guard catalyst, comprising an alumina support, and at least one of molybdenum or tungsten and at least one of nickel or cobalt supported on the alumina support, wherein the total ammonia integral adsorption of heat of said alumina support does not exceed 25 J/g, the percentage taken up by the ammonia integral adsorption heat of ammonia differential adsorption heat greater than 100 kJ/mol does not exceed 10% of the total ammonia integral adsorption heat.
Dependencies are inferred from the claim text.