Mechanistic in situ Investigation of Heterogeneous Hydrogenation over Rh/TiO2 Catalysts: Selectivity, Pairwise Route, Catalyst Nature Full article
| Journal |
Faraday Discussions
ISSN: 1359-6640 , E-ISSN: 1364-5498 |
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| Output data | Year: 2021, Volume: 229, Pages: 161-175 Pages count : 15 DOI: 10.1039/c9fd00138g | ||||||
| Tags | PARAHYDROGEN-INDUCED POLARIZATION; METAL-SUPPORT INTERACTIONS; NMR SIGNAL ENHANCEMENT; COMPLEXES; NICKEL | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Science Foundation | 19-13-00172 |
| 2 | Federal Agency for Scientific Organizations | 0333-2016-0002 (АААА-А16-116121510087-5) |
Abstract:
Selectivity to the products formation is strongly correlated with the nature of catalyst active centers. Therefore, the selective synthesis of active sites with certain structure is a big challenge in modern catalysis. Here the synthetic procedures are adopted for the formation of 1% Rh/TiO2 catalysts with different properties. It is shown that the nature of the precursor used for catalyst preparation is important, and the use of the solution of rhodium acetate instead of rhodium nitrate leads to the selective formation of butenes during 1,3-butadiene hydrogenation. The use of parahydrogen in the reaction results in the enhancement of NMR signals via parahydrogen-induced polarization (PHIP) for all synthesized catalysts and this signal enhancement increases with the catalyst calcination temperature increase. This effect is explained by the decoration of rhodium nanoparticles with titania that restricts hydrogen mobility on the surface leading to the highest reported to date selectivity to the pairwise hydrogen addition route of 7% for supported metal catalysts.
Cite:
Pokochueva E.V.
, Burueva D.B.
, Kovtunova L.M.
, Bukhtiyarov A.V.
, Gladky A.Y.
, Kovtunov K.V.
, Koptyug I.V.
, Bukhtiyarov V.I.
Mechanistic in situ Investigation of Heterogeneous Hydrogenation over Rh/TiO2 Catalysts: Selectivity, Pairwise Route, Catalyst Nature
Faraday Discussions. 2021. V.229. P.161-175. DOI: 10.1039/c9fd00138g WOS Scopus РИНЦ OpenAlex AN PMID
Mechanistic in situ Investigation of Heterogeneous Hydrogenation over Rh/TiO2 Catalysts: Selectivity, Pairwise Route, Catalyst Nature
Faraday Discussions. 2021. V.229. P.161-175. DOI: 10.1039/c9fd00138g WOS Scopus РИНЦ OpenAlex AN PMID
Dates:
| Submitted: | Dec 11, 2019 |
| Accepted: | Jan 27, 2020 |
| Published online: | Jan 30, 2020 |
| Published print: | May 1, 2021 |
Identifiers:
| ≡ Web of science: | WOS:000656622300008 |
| ≡ Scopus: | 2-s2.0-85107390370 |
| ≡ Elibrary: | 46815733 |
| ≡ OpenAlex: | W3003418828 |
| ≡ Chemical Abstracts: | 2020:340606 |
| ≡ PMID: | 33720219 |