Catalytic Hydrogenation with Parahydrogen: A Bridge from Homogeneous to Heterogeneous Catalysis Full article
| Conference |
ХХI Mendeleev Congress on General and Applied Chemistry 09-13 Sep 2019 , Санкт-Петербург |
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| Journal |
Pure and Applied Chemistry
ISSN: 0033-4545 , E-ISSN: 1365-3075 |
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| Output data | Year: 2020, Volume: 92, Number: 7, Pages: 1029-1046 Pages count : 18 DOI: 10.1515/pac-2020-0203 | ||||||
| Tags | alkynes; heterogeneous catalysis; hydrogenation; immobilization; Mendeleev-21; NMR; reaction mechanisms | ||||||
| Authors |
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| Affiliations |
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Funding (5)
| 1 | Russian Foundation for Basic Research | 17-54-33037 |
| 2 | Russian Foundation for Basic Research | 19-29-10003 (АААА-А19-119100890052-8) |
| 3 | Federal Agency for Scientific Organizations | 0333-2016-0002 (АААА-А16-116121510087-5) |
| 4 | Russian Foundation for Basic Research | 19-33-60045 |
| 5 | Russian Foundation for Basic Research | 19-53-12013 (АААА-А19-119040990042-7) |
Abstract:
One of the essential themes in modern catalysis is that of bridging the gap between its homogeneous and heterogeneous counterparts to combine their individual advantages and overcome shortcomings. One more incentive can now be added to the list, namely the ability of transition metal complexes to provide strong nuclear magnetic resonance (NMR) signal enhancement upon their use in homogeneous hydrogenations of unsaturated compounds with parahydrogen in solution. The addition of both H atoms of a parahydrogen molecule to the same substrate, a prerequisite for such effects, is implemented naturally with metal complexes that operate via the formation of a dihydride intermediate, but not with most heterogeneous catalysts. Despite that, it has been demonstrated in recent years that various types of heterogeneous catalysts are able to perform the required pairwise H-2 addition at least to some extent. This has opened a major gateway for developing highly sensitive and informative tools for mechanistic studies of heterogeneous hydrogenations and other processes involving H-2. Besides, production of catalyst-free fluids with NMR signals enhanced by 3-4 orders of magnitude is essential for modern applications of magnetic resonance imaging (MRI), including biomedical research and practice. The ongoing efforts to design heterogeneous catalysts which can implement the homogeneous (pairwise) hydrogenation mechanism are reported.
Cite:
Kovtunov K.V.
, Salnikov O.G.
, Skovpin I.V.
, Chukanov N.V.
, Burueva D.B.
, Koptyug I.V.
Catalytic Hydrogenation with Parahydrogen: A Bridge from Homogeneous to Heterogeneous Catalysis
Pure and Applied Chemistry. 2020. V.92. N7. P.1029-1046. DOI: 10.1515/pac-2020-0203 WOS Scopus РИНЦ ANCAN OpenAlex
Catalytic Hydrogenation with Parahydrogen: A Bridge from Homogeneous to Heterogeneous Catalysis
Pure and Applied Chemistry. 2020. V.92. N7. P.1029-1046. DOI: 10.1515/pac-2020-0203 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | Jun 22, 2020 |
| Published print: | Jul 28, 2020 |
Identifiers:
| Web of science: | WOS:000559625800004 |
| Scopus: | 2-s2.0-85091335864 |
| Elibrary: | 45301927 |
| Chemical Abstracts: | 2020:1611257 |
| Chemical Abstracts (print): | 173:692324 |
| OpenAlex: | W3038245278 |