Back to results
US 5,399,327 AGranted
SOx control compositions
AssigneeW. R. Grace & Co.-Conn.
InventorGwan Kim
Life of this patent
Estimating the term…
Abstract
A composition comprising a coprecipitated magnesia-lanthana-alumina (MgO--La.sub.2 O.sub.3 --Al.sub.2 O.sub.3) wherein the MgO component is present as microcrystalline phase, having a BET (N.sub.2) surface area of at least 130 m.sup.2 /g, preferably combined with a catalytic oxidation and/or reducing promoter metal such as ceria, vanadia and/or titania.
Claims3
A method for controlling SOx emissions from an FCC catalyst regeneration process which comprises catalytically cracking sulfur containing hydrocarbon in the presence of a multi-component composition comprising:
- (A) a coprecipitated ternary oxide composition having the formula:
- 30 to 50 MgO:5 to 30 La.sub.2 O.sub.3 :30 to 50 Al.sub.2 O .sub.3 wherein the amounts of MgO, La.sub.2 O.sub.3 and Al.sub.2 O.sub.3 are expressed as weight percent, and the MgO is present as a microcrystalline component, and
- (B) a catalytically active amount of promoters for SO.sub.2 oxidation and/or H.sub.2 S release selected from the oxides of Ce, Pr, Ti, Nd and V.
Dependencies are inferred from the claim text.