KINETICS OF REACTION OF HYDROGEN SULFIDE WITH UNSUPPORTED AND SUPPORTED NICKEL OXIDE

The kinetics of the reaction of gaseous hydrogen sulfide with unsupported, silica-supported, and silica-alumina-supported nickel oxide have been measured. Each system exhibits a different kinetic form for this reaction. As with the reduction of silica-alumina-supported nickel oxide, Elovich kinetics also describe the sulfiding of this catalyst. However, the kinetic equations which describe the sulfiding of the other two systems are unlike the equations that describe their reduction. Some possible mechanisms are proposed for the reaction of hydrogen sulfide with these nickel systems. © 1969.