Phillips Petroleum Company

H Wayne Mark

Brent J Bertus

Dwight L McKay

John S Roberts

Clarence R Bresson

Richard C Doss

An isomerization of a haloalkene is conducted in the presence of a mixture of a copper compound and a trithiocarbonic acid derivative or dithiocarbonic acid derivative.

Promoters for haloalkene isomerization

A composition comprising a cracking catalyst having had deposited thereon an aluminum containing treating agent.

Cracking catalyst restoration with aluminum compounds

A method to restore the activity of a cracking catalyst which has been deactivated at least partially by metals contamination which involves contacting the cracking catalyst with an aluminum containing treating agent.

In an ore flotation process for recovering copper values from an aqueous slurry the improvement comprises a depressant composition of an amino-substituted carboxylic acid derivative or a mercapto-substituted carboxylic acid derivative in combination with a thiocarbonate derivative.

Ore flotation

A method of restoring activity to a cracking catalyst which has been at least partially deactivated by metals contamination which involves contacting the cracking catalyst with a treating agent comprising a source of aluminum.

Deposits on a cracking catalyst are passivated by contacting the cracking catalyst with tin and at least one of phosphorus or sulfur.

Catalyst poisons passivated with tin compounds plus both sulfur and

Cracking catalyst poisons passivated with tin compounds plus both sulfur

A used hydrocarbon cracking catalyst is treated with an antimony carbonate to passivate contaminating metals thereon, e.g., vanadium, iron and/or nickel. A process for cracking a hydrocarbon in the presence of the passivated catalyst is also disclosed.

Passivation of metals contaminating a used cracking catalyst with

A passivating agent is added to a cracking catalyst which has not been previously treated with the passivating agent by mixing the untreated cracking catalyst with a refractory material which has been previously treated with a passivating agent. At least a portion of the passivating agent is transferred by inter-particle transfer from the treated refractory material to the untreated cracking catalyst. A passivating agent may also be recovered from a previously treated cracking catalyst which has become contaminated by contacting the contaminated cracking catalyst with a refractory material which has not previously been treated with the passivating agent. At least a portion of the passivating agent will transfer by inter-particle transfer from the contaminated catalyst to the refractory material while the contaminants on the contaminated cracking catalyst will not transfer.

Method of transferring a passivating agent to or from a cracking catalyst

A used cracking catalyst is treated with antimony carbonate and its thio analogues to passivate contaminating metals whenever these metals have been deposited on the catalyst.

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Bartlesville, OK, United States of America

H Wayne Mark