Selective Single‐Site Pd−In Hydrogenation Catalyst for Production of Enhanced Magnetic Resonance Signals using Parahydrogen

Selective Single‐Site Pd−In Hydrogenation Catalyst for Production of Enhanced Magnetic Resonance Signals using Parahydrogen Научная публикация

Журнал

Chemistry - A European Journal
ISSN: 0947-6539

Вых. Данные

Год: 2018, Том: 24, Номер: 11, Страницы: 2547-2553 Страниц : 7 DOI: 10.1002/chem.201705644

Авторы

Burueva Dudari B. ^1,2 , Kovtunov Kirill V. ^1,2 , Bukhtiyarov Andrey V. ³ , Barskiy Danila A. ⁴ , Prosvirin Igor P. ^3,2 , Mashkovsky Igor S. ⁵ , Baeva Galina N. ⁵ , Bukhtiyarov Valerii I. ³ , Stakheev Aleksandr Yu. ⁵ , Koptyug Igor V. ^1,2

Организации

1	Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, 3A Institutskaya St., 630090 Novosibirsk, Russia
2	Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russia
3	Boreskov Institute of Catalysis, SB RAS, 5 Acad. Lavrentiev Pr., 630090 Novosibirsk, Russia
4	Department of Chemistry, University of California at Berkeley, Berkeley, CA, 94720-3220 USA
5	N.D. Zelinsky Institute of Organic Chemistry, RAS, 47 Leninsky Pr., 119991 Moscow, Russia

Pd−In/Al2O3 single-site catalyst was able to show high selectivity (up to 98 %) in the gas phase semihydrogenation of propyne. Formation of intermetallic Pd−In compound was studied by XPS during reduction of the catalyst. FTIR−CO spectroscopy confirmed single-site nature of the intermetallic Pd−In phase reduced at high temperature. Utilization of Pd−In/Al2O3 in semihydrogenation of propyne with parahydrogen allowed to produce ≈3400-fold NMR signal enhancement for reaction product propene (polarization=9.3 %), demonstrating the large contribution of pairwise hydrogen addition route. Significant signal enhancement as well as the high catalytic activity of the Pd−In catalyst allowed to acquire 1H MR images of flowing hyperpolarized propene gas selectively for protons in CH, CH2 and CH3 groups. This observation is unique and can be easily transferred to the development of a useful MRI technique for an in situ investigation of selective semihydrogenation in catalytic reactors.

Burueva D.B. , Kovtunov K.V. , Bukhtiyarov A.V. , Barskiy D.A. , Prosvirin I.P. , Mashkovsky I.S. , Baeva G.N. , Bukhtiyarov V.I. , Stakheev A.Y. , Koptyug I.V.
Selective Single‐Site Pd−In Hydrogenation Catalyst for Production of Enhanced Magnetic Resonance Signals using Parahydrogen
Chemistry - A European Journal. 2018. V.24. N11. P.2547-2553. DOI: 10.1002/chem.201705644 WOS Scopus

Опубликована online:	11 янв. 2018 г.
Опубликована в печати:	21 февр. 2018 г.

Web of science:	WOS:000425626800003
Scopus:	2-s2.0-85041099380

БД	Цитирований
Scopus	55
Web of science	55