Deactivation and reactivation of the KOH impregnated Fe–Cu–Ni/AC catalyst for hydrolysis of carbon disulfide.

This paper describes the low-temperature removal of carbon disulfide (CS 2 ) from gas streams via the catalyst (KOH impregnated Fe–Cu–Ni/AC) prepared by the sol–gel method. Deactivation and reactivation of catalyst were studied as well as the desulfurization production analysis. The catalysts were characterized by SEM–EDS, FT-IR, and N 2 adsorption/desorption techniques. Elemental sulfur, metal sulfide, and sulfate are ultimately generated on the surface of the catalyst. The consumption of basic sites and the blocking of pores are considered to be the main reasons for the catalyst deactivation. The catalytic activity can be recovered after immersing KOH solution under ultrasonication. [ABSTRACT FROM AUTHOR]