Patent ID: 7033418
Filing Date: 2006-04-25
Classification: B01D,B01J,Y02C,Y10S

Abstract:
1. An activated gas purifier material capable of removing trace amounts of one or more impurities from a hydride, inert, or nonreactive gas at a temperature below 100° C., said purifier comprising an alumina material selected from the group consisting of organic aluminas and modified organic aluminas, said alumina material having been activated by heating said alumina material at a temperature greater than about 50° C. in an inert or non-inert atmosphere or in a vacuum to form an activated alumina material and maintaining said activated alumina material in said inert or non-inert atmosphere or in said vacuum subsequent to said activation and prior to use, wherein said modified organic aluminas are prepared by treating said organic alumina material with a modifying agent prior to said activation, said modifying agent comprising an organic or inorganic compound of a metal selected from the group consisting of Na, K, Li, Rb, Cs, Mg, Ca, Sr, and Ba, wherein said impurities are selected from the group consisting of arsine, germane, phosphine, silane, hydrogen sulfide, siloxanes, phosphorus oxides, phosphorus oxyacids, carbon dioxide, water, and mixtures thereof.