• Patent

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

Citation

Gangwal, S., & Jothimurugesan, K. (1999). IPC No. U.S.Attrition resistant catalysts and sorbents based on heavy metal poisoned FCC catalysts (Patent No. 5928980.)

Abstract

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.