Modified stannic oxide-zirconium oxide composite sol and...

Details Modified stannic oxide-zirconium oxide composite sol and... Modified stannic oxide-zirconium oxide composite sol and...

B - Operations, Transporting

01

J

B01J 13/00 (2006.01) C01G 25/00 (2006.01) C01G 41/00 (2006.01)

Patent

CA 2099906

A stable sol which comprises colloidal particles of modified stannic oxide-zirconium oxide composite having a particle size of from 4.5 to 60 nm, said colloidal particles consisting essentially of, as nuclei, colloidal particles of stannic oxide-zirconium oxide composite having a particle size of from 4 to 50 nm and having a structure in which colloidal particles of stannic oxide and colloidal particles of zirconium oxide are bonded to each other in a ratio, by weight of these oxides, of from 0.02 to 1.0 as ZrO2/SnO2, and, as a coating on the surface of the nuclei, colloidal particles of tungstic oxide-stannic oxide composite having a particles size of from 2 to 7 nm and a WO3/SnO2 weight ratio of from 0.5 to 100, and which has a total content of metal oxides of from 2 to 50 wt%.

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