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Class Information
Number: 502/233
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Catalyst or precursor therefor > Silicon containing or process of making > Forming silica gel
Description: Process in which an amorphous form of hydrate silica is produced; generally by precipitation or coagulation of a silica sol or decomposition of a silicate.

Sub-classes under this class:

Class Number Class Name Patents
502/234 Coprecipitating 68
502/237 Metal, metal oxide, or metal hydroxide containing 88

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
4717708 Inorganic oxide aerogels and their preparation Jan. 5, 1988
4619908 Non-aged inorganic oxide-containing aerogels and their preparation Oct. 28, 1986
4565794 Production of silica gel and an adsorbent, absorbent product from sericitic clay Jan. 21, 1986
4537866 Method of preparing silicate composition Aug. 27, 1985
4529504 Removal of nitrogenous compounds from petroleum processing products using chlorosilylated silica gel Jul. 16, 1985
4504595 Fluorinated silica catalyst and preparation of aromatic/aliphatic nitriles in the presence thereof Mar. 12, 1985
4436883 Polymerization using a support formed by heating silica gel in inert atmosphere Mar. 13, 1984
4436882 Polymerization process utilizing a catalyst prepared by aging of a chromium-containing gel at high pH Mar. 13, 1984
4414137 Catalytically active amorphous silica Nov. 8, 1983
4384086 Large pore volume olefin polymerization catalysts May. 17, 1983
4382070 Process for producing xerogel of silicic acid with high volume of pores May. 3, 1983
3975293 Bodies of siliceous gels having large pores and process for preparing same Aug. 17, 1976

1 2 3

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