Gasoline Sulfur Reduction Catalyst for Fluid Catalytic Cracking Process
AssigneeW. R. Grace & Co.-Conn.
InventorsRichard Franklin Wormsbecher, Ruizhong Hu
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Abstract
A catalytic cracking catalyst composition is disclosed that is suitable for reducing the sulfur content of catalytically cracking liquid products, in particularly gasoline products, produced during a catalytic cracking process. Preferably, the catalytic cracking process is a fluidized catalytic cracking (FCC) process. The composition comprises zeolite, zinc and at least one rare earth element having an ionic radii of less than 0.95 Å at a coordination number of 6. Preferably, zinc and the rare earth element are present as cations that have been exchanged on the zeolite. The zeolite is preferably a Y-type zeolite.
Claims42
A catalytic cracking catalyst comprising a zeolite, zinc and at least one rare earth element having an ionic radii of less than 0.95 Å at a coordination number of 6.
A method of reducing the sulfur content of a catalytically cracked petroleum fraction, said method comprises catalytically cracking a petroleum feed fraction containing organosulfur compounds at elevated temperatures in the presence of a cracking catalyst comprising zeolite, zinc and at least one rare earth element having an ionic radii of less than 0.95 Å at a coordination of 6.
Dependencies are inferred from the claim text.