Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1973-05-02
1978-04-25
Douglas, Winston A.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
208108, 208111, 252412, 252416, B01J 2938, B01J 2394, B01J 2396, B01J 2320
Patent
active
040861848
ABSTRACT:
Catalysts used in hydrocarbon conversion operations are subject to "permanent" deactivation after successive use and regeneration. These permanently deactivated catalysts can be reactivated by immersing them in a liquid medium and subjecting the liquid medium to ultrasonic energy. This reactivation is especially suitable to catalyst mixtures, comprising (1) an amorphous base and/or (2) a crystalline aluminosilicate component and/or (3) a transition metal hydrogenation component, particularly those employed in hydrocracking operations.
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Henry H. Clarke
Ranganathan Ramaswami
Corcoran Edward M.
Douglas Winston A.
Exxon Research & Engineering Co.
Konopka P. E.
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