open access

https://hdl.handle.net/2115/97390

Redox Metal-Support Interaction of CoO x /Ti2O3 to Enhance Catalytic Performance for Hydrodeoxygenation of Anisole

英語

titaniumsuboxide

2025-01-31

American Chemical Society

ACS sustainable chemistry & engineering

13(5)

2038-2047

This study found that the CoOx/Ti2O3 catalyst showed high activity, selectivity, and stability for hydrodeoxygenation (HDO) of anisole to benzene. Due to the reductivity of Ti2O3, a redox reaction occurred between Ti2O3 and CoOx, forming cobalt species with a low oxidation state, such as CoO and metallic Co. These cobalt species on Ti2O3 enhanced the catalytic performance for the HDO reaction. On the other hand, CoOx supported on other supports, including TiO2, Al2O3, SiO2, and active carbon, was in the form of Co3O4 and showed only low catalytic activity. H-2-TPR and H-2-TPD experiments demonstrated that CoOx supported on Ti2O3 was easily reduced to metallic Co, which had the ability to activate H-2. CoOx/Ti2O3 and CoOx/TiO2 catalysts were deactivated more or less by partial oxidation of the cobalt species during the HDO reaction. The reduction of the partially oxidized cobalt species was promoted by the redox reaction between the cobalt species and Ti2O3, and therefore, CoOx/Ti2O3 showed a much longer catalyst life than CoOx/TiO2.

学術雑誌論文

Accepted Manuscript

This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry & Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-VXXRGBJCA8MFA7K7QYEY.

2168-0485