Patent ID: 7402612
Filing Date: 2008-07-22
Classification: B01J,C01F,C01P,C10G

Abstract:
1. A method of making a stabilized transition alumina catalyst support comprising: (a) introducing by impregnation at least one structural stabilizer precursor to a transition alumina comprising a phase selected from the group consisting of γ-Al (b) optionally, drying the stabilizer-impregnated alumina; (c) steaming the stabilizer-impregnated alumina at conditions sufficient to at least partially transform the stabilizer-impregnated alumina to at least one phase selected from the group consisting of boehmite, pseudoboehmite, and combination thereof and to form a stabilizer-containing boehmite alumina, wherein said sufficient conditions comprise a temperature between 180° C. and 300° C.; and (d) calcining the stabilizer-containing boehmite alumina at a temperature between 400° C. and 900° C. to form a stabilized transition alumina catalyst support comprising a γ-Al