Catalyst for production of ethylene from ethanol
AssigneeNikki Chemical Co., Ltd.
InventorsMitsuo Kojima, Takahiro Aida, Yukio Asami
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Abstract
An activated alumina catalyst containing alkali metal, sulfur, iron and silicon in an amount of 0.05 wt. % or less respectively, calculated as Na.sub.2 O, SO.sub.3, Fe.sub.2 O.sub.3 and SiO.sub.2 and having a purity of 99.6 wt. % or more exhibits superior activity and selectivity when used in the dehydration reaction of ethanol to ethylene. By adding to the above mentioned high purity activated alumina catalyst a phosphate of one member selected from the metals of Group IIa, Group IIb, Group IIIa and Group IVb of the Periodic Table in an amount of from 0.05 to 5 wt. % of said catalyst there can be obtained a catalyst having more improved activity and selectivity as well as more increased mechanical strength.
Claims8
A catalyst which consists essentially of high purity activated alumina having a purity of at least 99.6 wt. % and containing not more than 0.05 wt. % of alkali metal, calculated as Na.sub.2 O, not more than 0.05 wt. % of sulfur, calculated as SO.sub.3, not more than 0.05 wt. % of iron, calculated as Fe.sub.2 O.sub.3, and not more than 0.05 wt. % of silicon, calculated as SiO.sub.2, said high purity activated alumina having incorporated therein from 0.05 to 5 wt. %, based on the weight of said high purity activated alumina, of at least one phosphate of a metal selected from the group consisting of the metals of Group IIa, Group IIb, Group IIIa and Group IVb of the Periodic Table of the Elements.
Dependencies are inferred from the claim text.