Method for the production of ultra-fine gold particles immobiliz

Details Method for the production of ultra-fine gold particles immobiliz Method for the production of ultra-fine gold particles immobiliz

1988-03-22

1989-06-13

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Silicon containing or process of making

502317, 502324, 502330, 502331, 502344, B01J 2104, B01J 2108, B01J 2352

Patent

active

048393274

ABSTRACT:
A composite having ultra-fine gold particles uniformly and strongly immobilized in a deposited state on a metal oxide is obtained by preparing a solution containing the metal oxide as a carrier and a gold compound, adjusting the pH value of the solution to a specific level thereby inducing precipitation and deposition of gold hydroxide or gold on the carrier and, when the precipitate is in the form of gold hydroxide, further, firing the precipitate. The ultra-fine gold particles immobilized on metal oxides are useful as a catalyst for reduction and oxidation, in sensor elements for flammable gases, and as an electrode catalyst.

REFERENCES:
patent: 4698324 (1987-10-01), Haruta et al.

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