Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Patent
1985-05-09
1986-12-09
Dees, Carl F.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
502 80, 502407, 423327, B01J 2112, B01J 2016
Patent
active
046280421
ABSTRACT:
Clay convertible by thermal treatment into crystalline mullite and silica is formed into green coherent bodies of desired size and shape such as, for example, microspheres, pellets or honeycombs. The bodies are then calcined to convert the clay into a mixture of crystalline mullite and silica, thereby also hardening the bodies. Without destroying the form of the bodies, e.g., without grinding and without causing the bodies to decrepitate, pores in the size range of about 150 to 350 A are formed by selectively leaching silica from the bodies. The porous mullite bodies retain porosity at elevated temperatures and are useful, for example, as catalyst supports and contact materials. Pore structure in the meso- (100-600 A diameter) and macro- (600-20,000 A diameter) size ranges may be controlled.
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Dees Carl F.
Engelhard Corporation
Moselle Inez L.
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