Compositions – X-ray or neutron shield
Patent
1977-03-23
1978-05-02
Shine, W. J.
Compositions
X-ray or neutron shield
252476, 26034834, B01J 2302, B01J 2314, B01J 2350, B01J 2352
Patent
active
040873854
ABSTRACT:
An improved method for the preparation of a silver catalyst in which a cyclic tetraamine is employed as a dispersing agent for the silver compound. Such catalysts are useful in the preparation of ethylene oxide by the direct oxidation of ethylene.
REFERENCES:
patent: 3702259 (1972-11-01), Nielsen
patent: 4007135 (1977-02-01), Hayden et al.
Ancona A. Cooper
Shine W. J.
The Dow Chemical Company
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