Silver ethylene oxide catalyst and process for preparation of the catalyst

摘要: The invention relates to an improved silver catalyst, suitable for use in the oxidation of ethylene oxide, characterized by (a) a calcined, alkali metal-enriched alumina carrier and (b) from 1 25 percent weight metallic silver, based on total (c) metal group consisting potassium, rubidium, cesium mixtures, form oxide or hydroxide as promoter (d) fluoride-anion, latter two under each being amount between 10 1000 parts per million catalyst.