Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-05-06
1978-08-15
Dees, Carl F.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252454, B01J 2900, B01J 2906
Patent
active
041070887
ABSTRACT:
A process for modifying the silica hydrosol used to bind zeolite clay catalysts by adding salts of titania, zirconia, iron or ceria to the silica hydrosol in the course of preparation is disclosed. This addition alters the physical characteristics of catalyst when titania and zirconia salts are added and alters the matrix activity when quadrivalent cerium salts or iron salts are added to the silica hydrosol.
REFERENCES:
patent: 2873246 (1959-02-01), Hansford et al.
patent: 3313739 (1967-04-01), Acker et al.
patent: 3471410 (1969-10-01), Oleck et al.
patent: 3867308 (1975-02-01), Elliott, Jr.
Dees Carl F.
McDowell, Jr. William W.
Savage Arthur P.
W. R. Grace & Co.
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