Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1987-02-19
1987-11-03
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502415, 502439, 423625, 23313FB, B01J 2104
Patent
active
047043784
ABSTRACT:
The process of the present invention for preparing granules of alumina includes pretreating an alumina powder by admixing with cold water in a mixer at a temperature below room temperature, e.g., such as below about 20.degree. C., to form a pretreated alumina having a pore volume saturated with water and further having a surface area of gel structure, and agglomerating the pretreated alumina in a fluidized bed to form granules sized in the range of about 1-3 mm. The process is particularly suited to producing activated alumina in macroporous granules. The process in one aspect further includes a cold hopper for cooling alumina powder prior to the pretreating step.
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"Fluidized-Bed Spray Granulation" by Sten Mortensen and Svend Hovmand, CEP, Apr. 1983, pp. 37-42.
Chou Chin-Liang
Edd Jon F.
Fleming Hubert L.
Huang Ching-Chung
Kono Hisashi O.
Aluminum Company of America
Garvin Patrick P.
Glantz Douglas G.
Harvey Paige C.
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