Deactivation Kinetics of Solid Acid Catalyst with Laterally Interacting Protons.

ABSTRACT: Differences in catalyst deactivation kinetics in solid acid catalysis are studied with catalyst models that allow for lateral interaction between protons. Deactivation of a solid acid catalyst with laterally interacting protons induces inhomogeneity of proton reactivity that develops with time. As a consequence, product selectivity changes and deactivation will accelerate. This is demonstrated by simulations of the deactivation kinetics of the alkylation reaction of propylene with isobutane. The effect of lateral interactions between protons arises because initial catalyst deactivation is not caused by pore blocking or coke deposition but by a molecular mechanism where protons are consumed due to the formation of stable nonreactive carbenium ions. High selectivity to alkylate requires a ca

SUBMITTER: Sengar A 

PROVIDER: S-EPMC6179454 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature