Title: High strength alumina-silica catalyst substrates having high surface area

Abstract: Catalyst substrates characterized by superior structural properties and a subsequent high degree of catalytic activity are produced by using a blend of colloidal silica and specially activated alumina which blend is subsequently rehydrated and activated under certain specified conditions. In a preferred embodiment the substrate is activated at a temperature of 1200.degree.-1400.degree.C to provide a substrate characterized by the absence of free silica.

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Inventors: Ballain, Marlyn D. (Belleville, IL, US)
Hart, Leroy D. (St. Louis, MO, US)

Application Number: 487643
Filing Date: 1974-07-11
Publication_date: 1976-03-09
Assignee: Aluminum Company of America (Pittsburgh, PA)
Primary Class(es): 502/439 501/128, 501/133, 502/503, 502/504
Other Classes:
US Patent Ref:

2563650	Aug, 1951	Heinemann	252/455.
2941958	Jun, 1960	Conno, Jr. et al.	252/455.
3146210	Aug, 1964	Baldwin	252/455.
3184414	May, 1965	Koch et al.	252/455.

Other Refs:
Primary Examiner: Dees, Carl F.
Assistant Examiner:
Attorney: Taylor; John P.