Effect of activated carbon support on CS 2 removal over coupling catalysts

Abstract

Supported coupling catalysts for CS 2 removal were prepared with different activated carbons originated from wood, coconut shell and coal as supports, and their catalytic activities for CS 2 removal were tested at ambient temperature. The textural and surface properties of the activated carbons were characterized by nitrogen adsorption, temperature-programmed desorption (TPD) and Boehm titration. The activated carbon support with meso- and macropores, and oxygen-functional groups performs higher CS 2 removal ability at ambient temperature. The effects of flow rate, CS2 inlet concentration, temperature and relative humidity on CS2 removal were also investigated. High efficient removal is obtained at temperature of 50 °C, space velocity of 2000 h −1, inlet CS 2 concentration of 500 mg S/m 3 and relative humidity of 20% with the breakthrough sulfur capacity up to 4.3 g S/g Cat and working sulfur capacity up to 7 g S/g Cat.