Performance controlled via surface oxygen-vacancy in Ti-based oxide catalyst during methyl oleate epoxidation.

ABSTRACT: The catalytic performance with high conversion and high selectivity of Ti-based oxide catalysts have been widely investigated. Besides, stability, which is an essential parameter in the industrial process, lacked fundamental understanding. In this work, we combined computational and experimental techniques to provide insight into the deactivation of P25 and TS-1 Ti-based oxide catalysts during the methyl oleate (MO) epoxidation. The considered deactivation mechanisms are fouling and surface oxygen vacancy (O_V). The fouling causes temporary catalyst deactivation through active site blockage but can be removed via calcination in air at high temperature. However, in this work, the O_V formation plays an important role in the overall performance of the spent catalyst as th

SUBMITTER: Praserthdam S 

PROVIDER: S-EPMC7641232 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature