Ag catalyst for producing epoxyethane, its preparation method and uses

Abstract

The invention discloses a silver catalyst making method and appliance of epoxyethane, which comprises the following steps: soaking the compound with silver, organic amine, alkali metal adjuvant, cerium adjuvant, random alkali earth metal adjuvant, rhenium adjuvant and theses adjuvant solutions to sinter into porous alpha-alumina carrier; filtering; drying; activating through compound gas with oxygen to produce silver catalyst. The method possesses higher flexibility and selectivity.

Description

technical field

[0001] The present invention relates to a kind of silver catalyst and preparation method thereof, more specifically the present invention relates to a kind of silver catalyst and preparation method thereof for producing ethylene oxide by ethylene oxidation, also relate to this catalyst in ethylene oxidation production epoxy use in ethane. Background technique

[0002] Under the action of silver catalyst, the oxidation of ethylene mainly produces ethylene oxide, and at the same time, side reactions produce carbon dioxide and water. Among them, activity, selectivity and stability are the main performance indicators of silver catalyst. The so-called activity refers to the reaction temperature required when the production process of ethylene oxide reaches a certain reaction load. The lower the reaction temperature, the higher the activity of the catalyst. The so-called selectivity refers to the ratio of the moles of ethylene converted into ethylene oxide in the...

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