SELECTIVITY OF GAS-SOLID CATALYTIC REACTION

Abstract

Consecutive hydrogenation of acetylene with n-ckel catalyst was carried out in order to investigate the selectivity of the intermediate product of a consecutive reaction. Six groups of catalysts with different diameters were prepared and the selectivity was measured for each catalyst group. The results showed the similar trend to the theory proposed by Wheeler¹⁰⁾, but considerable discrepancy was found between the measured selectivity and the theoretical one which was predicted by such a simple hypothesis as linear kinetics and a uniform poremodel for a catalyst.
More precise investigation by the authors, that is, the experimental runs about the kinetics of this reaction, the computational analysis of the selectivity based upon these observed kinetics and the microscopic observation of the catalyst, clarified that the experimental data on the obtained selectivity coincided well with the micro-macro pore model by the consecutive reaction of Langmuir-Hinshelwood rate form.