XPS and HR TEM Elucidation of the Diversity of Titania-Supported Single-Site Ir Catalyst Performance in Spin-Selective Propene Hydrogenation Full article
| Journal |
International Journal of Molecular Sciences
ISSN: 1422-0067 , E-ISSN: 1661-6596 |
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| Output data | Year: 2023, Volume: 24, Number: 21, Article number : 15643, Pages count : 14 DOI: 10.3390/ijms242115643 | ||||
| Tags | XPS; NMR; heterogeneous catalysis; hydrogenation; single-site catalysts | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 075-15-2021-580 |
| 2 | Russian Science Foundation | 19-13-00172-П |
Abstract:
Immobilized [Ir(COD)Cl]2-Linker/TiO2 catalysts with linkers containing Py, P(Ph)2 and N(CH3)2 functional groups were prepared. The catalysts were tested via propene hydrogenation with parahydrogen in a temperature range from 40 °C to 120 °C which was monitored via NMR. The catalytic behavior of [Ir(COD)Cl]2-Linker/TiO2 is explained on the basis of quantitative and qualitative XPS data analysis performed for the catalysts before and after the reaction at 120 °C. It is shown that the temperature dependence of propene conversion and the enhancement of the NMR signal are explained via a combination of the stabilities of both the linker and immobilized [Ir(COD)Cl]2 complex. It is demonstrated that the N(CH3)2-linker is the most stable at the surface of TiO2 under used reaction conditions. As a result, only this sample shows a rise in the enhancement of the NMR signal in the 100–120 °C temperature range.
Cite:
Nartova A.V.
, Kvon R.I.
, Kovtunova L.M.
, Skovpin I.V.
, Koptyug I.V.
, Bukhtiyarov V.I.
XPS and HR TEM Elucidation of the Diversity of Titania-Supported Single-Site Ir Catalyst Performance in Spin-Selective Propene Hydrogenation
International Journal of Molecular Sciences. 2023. V.24. N21. 15643 :1-14. DOI: 10.3390/ijms242115643 WOS Scopus РИНЦ AN PMID OpenAlex
XPS and HR TEM Elucidation of the Diversity of Titania-Supported Single-Site Ir Catalyst Performance in Spin-Selective Propene Hydrogenation
International Journal of Molecular Sciences. 2023. V.24. N21. 15643 :1-14. DOI: 10.3390/ijms242115643 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Sep 22, 2023 |
| Accepted: | Oct 24, 2023 |
| Published online: | Oct 27, 2023 |
| Published print: | Nov 1, 2023 |
Identifiers:
| Web of science: | WOS:001099443100001 |
| Scopus: | 2-s2.0-85176610775 |
| Elibrary: | 55920989 |
| Chemical Abstracts: | 2023:2384323 |
| PMID: | 37958626 |
| OpenAlex: | W4387973667 |