Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1979-12-27
1982-03-23
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
562547, B01J 2714, C07C 5161
Patent
active
043211607
ABSTRACT:
The present invention relates to a method for the activation of PMA based catalysts by treating the catalyst precursor with a nitrogen-containing compound such as an oxide of nitrogen gas or a nitrogen acid such as nitric or nitrous at a temperature of from about 125.degree. C. to about 400.degree. C. The method can be employed in a reactor by loading the catalyst precursor, adjusting the reactor temperature to one suitable for activation and optionally sweeping the reactor with an inert gas followed by the treating step. The method herein permits faster, lower temperature catalyst activation than when air activation is employed giving higher oxidative conversion yields and prolonged catalyst life.
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Farrington Diane G.
White James F.
Curatolo Joseph G.
Evans Larry W.
Gantz Delbert E.
Knudsen Herbert D.
Standard Oil Company
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