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Attrition resistant catalysts and sorbents based on heavy metal poisoned FCC catalysts

United States Patent

5,928,980
July 27, 1999
View the Complete Patent at the US Patent & Trademark Office
A heavy metal poisoned, spent FCC catalyst is treated by chemically impregnating the poisoned catalyst with a new catalytic metal or metal salt to provide an attrition resistant catalyst or sorbent for a different catalytic or absorption processes, such as catalysts for Fischer-Tropsh Synthesis, and sorbents for removal of sulfur gasses from fuel gases and flue-gases. The heavy metal contaminated FCC catalyst is directly used as a support for preparing catalysts having new catalytic properties and sorbents having new sorbent properties, without removing or "passivating" the heavy metals on the spent FCC catalyst as an intermediate step.
Gangwal; Santosh (Cary, NC), Jothimurugesan; Kandaswamy (Hampton, VA)
Research Triangle Institute (Research Triangle Park, NC)
08/ 795,669
February 6, 1997
This invention was made with Government Support under Contract No. DE-FG22-95MT95011 awarded by the United States Department of Energy. The Government has certain rights in this invention.