Rh-Based Intermetallic Rh–In/SiO2 Catalyst for Parahydrogen-Induced Polarization | Sciact - CRIS-system of Boreskov Institute of Catalysis

Rh-Based Intermetallic Rh–In/SiO2 Catalyst for Parahydrogen-Induced Polarization Full article

Journal

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Output data

Year: 2024, Volume: 128, Number: 15, Pages: 6319–6327 Pages count : 9 DOI: 10.1021/acs.jpcc.4c00651

Tags

Binary alloys; Catalysts; Hydrogenation; Nuclear magnetic resonance; Polarization; Propylene; Silicon; X ray photoelectron spectroscopy; X ray powder diffraction

Authors

Burueva Dudari B. ¹ , Bukhtiyarov Andrey V. ² , Prosvirin Igor P. ² , Baeva Galina N. ³ , Smirnova Nadezhda S. ³ , Mashkovsky Igor S. ³ , Bukhtiyarov Valerii I. ² , Stakheev Alexander Y. ³ , Koptyug Igor V. ¹

Affiliations

1	International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
2	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
3	N.D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky Prosp., Moscow 119991, Russia

Funding (2)

1	Russian Science Foundation	22-43-04426
2	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0032

Heterogeneous catalysts are of considerable interest for their ability to produce gases with highly polarized nuclear spins by using parahydrogen. Rh catalysts are known for producing pronounced parahydrogen-induced polarization (PHIP) effects. This study illustrates that modification of Rh with In promotes the electronic/chemical state of Rh offering the new Rh–In bimetallic catalyst, which is more efficient in such processes compared to monometallic Rh. Both catalysts were tested in hydrogenations of propyne and propylene. We associate the 50-fold higher activity of Rh–In/SiO2 in pairwise hydrogen addition compared to monometallic Rh/SiO2 with the formation of the intermetallic Rh–In compound, which was confirmed by X-ray photoelectron spectroscopy and X-ray diffraction analysis. Intermetallic Rh–In/SiO2 provided an ∼1400-fold NMR signal enhancement for propylene in propyne hydrogenation. It was also demonstrated that the activity of Rh–In/SiO2 can be tuned by controlling the reductive/oxidative pretreatment.

Burueva D.B. , Bukhtiyarov A.V. , Prosvirin I.P. , Baeva G.N. , Smirnova N.S. , Mashkovsky I.S. , Bukhtiyarov V.I. , Stakheev A.Y. , Koptyug I.V.
Rh-Based Intermetallic Rh–In/SiO2 Catalyst for Parahydrogen-Induced Polarization
The Journal of Physical Chemistry C. 2024. V.128. N15. P.6319–6327. DOI: 10.1021/acs.jpcc.4c00651 WOS Scopus ANCAN OpenAlex

Submitted:	Jan 30, 2024
Accepted:	Mar 22, 2024
Published online:	Apr 8, 2024
Published print:	Apr 18, 2024

Web of science:	WOS:001199591300001
Scopus:	2-s2.0-85189952626
Chemical Abstracts:	2024:756844
Chemical Abstracts (print):	186:247612
OpenAlex:	W4394611738

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