Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1981-05-26
1982-12-21
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
208 52CT, 208113, 208120, 252414, 252417, B01J 2938, B01J 2120, C10G 1118, C10G 1105
Patent
active
043648479
ABSTRACT:
A contaminating metal on cracking catalyst used for the cracking of hydrocarbons is passivated by contacting the catalyst with a lithium compound at passivation reaction conditions. The passivation may be effected in a separate passivation zone with an aqueous solution of a water soluble lithium compound or in the cracking zone by dissolving an oil soluble lithium compound in the feedstock. The amount of lithium deposited on the catalyst is from about 0.5 wt. % to about 1.25 wt. % on an elemental basis.
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Hoatson Jr. James R.
Konopka P. E.
Morris Louis A.
Page II William H.
UOP Inc.
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