Cracking catalysts with octane enhancement
AssigneeW. R. Grace & Co.-Conn.
InventorsGrant C. Edwards, Alan W. Peters
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Abstract
Cracking catalysts which yield higher octane gasoline than conventional cracking catalysts are made with large pore size zeolites such as zeolite Beta and zeolite ZSM-20 in the low sodium, H.sup.+ form. These zeolites are mixed with a matrix which contains at least a binder and formed into catalyst particles. These catalysts are especially suitable to be used in fluid catalytic cracking.
Claims12
A method of cracking a hydrocarbon feedstock to obtain lower boiling hydrocarbons having higher octane gasoline which comprises subjecting said feedstock to fluid catalytic cracking conditions with a space velocity based on the active zeolite component of at least 100 in the absence of added hydrogen and in the presence of a catalytic cracking catalyst having a particle size of from about 10 to 200 micrometers, said catalyst comprising zeolite Beta exchanged to a low soda level which is mixed in a matrix, said zeolite being present in a catalytically effective amount for catalytic cracking and in an amount up to 80% by weight of the total mixture.
A method of increasing the octane number of FCC gasoline comprising contacting a hydrocarbon feedstock under FCC cracking conditions with a space velocity based on the active zeolite component of at least 100 in the absence of added hydrogen and in the presence of a catalytic cracking catalyst comprising zeolite Beta exchanged to a low soda level which is mixed in a matrix, said zeolite being present in a catalytically effective amount for catalytic cracking and in an amount up to 80% by weight of the total mixtures and said catalyst having a particle size of from about 10 to 200 micrometers.
Dependencies are inferred from the claim text.