Catalyst deactivation and structure sensitivity

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Dmitry Yu. Murzin
Publiceringsår: 2014
Tidskrift: Catalysis Science and Technology
Tidskriftsakronym: Catal. Sci. Technol.
Volym: 4
Nummer: 9
Artikelns första sida, sidnummer: 3340
Artikelns sista sida, sidnummer: 3350
eISSN: 2044-4761


Abstrakt

The dependence of catalyst deactivation on cluster size is considered for poisoning and coking. A quantitative treatment of the size dependent deactivation was carried out for a heterogeneous catalytic mechanism with two kinetically significant steps. The corresponding kinetic equations are derived and numerically analyzed. A comparison with experimental data on methylcyclopropane hydrogenolysis over Pt with CO poisoning and ethylene hydrogenation on Pt with sulphur poisoning is given. For the latter case where there was more profound deactivation for smaller clusters, an adequate description of the final activity was achieved.

Senast uppdaterad 2020-22-01 vid 04:07