Abstract
The rate of consecutive hydrogenation of acetylene with nickel-on-kieselguhr catalysts was studied both experimentally and theoretically under such conditions that the effects of intraparticle diffusional resistance of micro and macro pores could be ignored, in order to examine the intrinsic reaction mechanism in detail, and the selectivity for a consecutive gas-solid catalytic reaction was investigated.
It was found that the rate steps on the catalytic surface, especially the desorption step of intermediate product and surface reaction step, played a predominant role in the selectivity.
