Bodies of siliceous gels having large pores and process for prep

Details Bodies of siliceous gels having large pores and process for prep Bodies of siliceous gels having large pores and process for prep

1973-10-11

1976-08-17

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

210 31C, 252451, 423338, B01J 1300, C01B 3316

Patent

active

039752933

ABSTRACT:
This invention is directed to: (1) a process for increasing the pore diameter of siliceous gels without decreasing the pore volume in which a siliceous hydrogel is dried at a temperature of up to 500.degree., C, to produce a siliceous gel having an average pore diameter greater than 40 A, and then contacted with an ammoniacal medium; and (2) the product produced by said process.

REFERENCES:
patent: 1772055 (1930-08-01), Miller et al.
patent: 2302297 (1942-11-01), Connolly
patent: 2477695 (1949-08-01), Kimberlin, Jr.
patent: 2484258 (1949-10-01), Webb et al.
patent: 3538212 (1970-11-01), Beau et al.

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