Zhu, Yuanyuan ORCID: 0000-0002-5257-5645, Sushko, Peter V, Melzer, Daniel, Jensen, Eric, Kovarik, Libor, Ophus, Colin
ORCID: 0000-0003-2348-8558, Sanchez-Sanchez, Maricruz, Lercher, Johannes A
ORCID: 0000-0002-2495-1404 and Browning, Nigel D
ORCID: 0000-0003-0491-251X
(2017)
Formation of Oxygen Radical Sites on MoVNbTeOx by Cooperative Electron Redistribution.
Journal of the American Chemical Society, 139 (36).
pp. 12342-12345.
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Abstract
A novel pathway of increasing the surface density of catalytically active oxygen radical sites on a MoVTeNb oxide (M1 phase) catalyst during alkane oxidative dehydrogenation is reported. The novel sites form when a fraction of Te<sup>4+</sup> is reduced and emitted from the M1 crystals under catalytic operating conditions, without compromising structural integrity of the catalyst framework. Density functional theory calculations show this Te reduction induces multiple inter-related electron transfers, and the associated cooperative effects lead to the formation of O<sup>-</sup> radicals. The in situ observations identify complex dynamic changes in the catalyst on an atomistic level, highlighting a new way to tailor structure and dynamics for highly active catalysts.
Item Type: | Article |
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Depositing User: | Symplectic Admin |
Date Deposited: | 12 Dec 2018 09:48 |
Last Modified: | 19 Jan 2023 01:09 |
DOI: | 10.1021/jacs.7b05240 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3029866 |