Pd on Nanodiamond/Graphene in Hydrogenation of Propyne with Parahydrogen | Sciact

Pd on Nanodiamond/Graphene in Hydrogenation of Propyne with Parahydrogen Научная публикация

Журнал

The Journal of Physical Chemistry C
ISSN: 1932-7447

Вых. Данные

Год: 2021, Том: 125, Номер: 49, Страницы: 27221-27229 Страниц : 9 DOI: 10.1021/acs.jpcc.1c08424

Авторы

Burueva Dudari B. ^1,2 , Sviyazov Sergey V. ^1,2 , Huang Fei ³ , Prosvirin Igor P. ⁴ , Bukhtiyarov Andrey V. ⁴ , Bukhtiyarov Valerii I. ⁴ , Liu Hongyang ³ , Koptyug Igor V. ¹

Организации

1	Laboratory of Magnetic Resonance Microimaging, International Tomography Center SB RAS, 3A Institutskaya St., Novosibirsk 630090, Russia
2	Novosibirsk State University, 2 Pirogova St., Novosibirsk 630090, Russia
3	Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
4	Boreskov Institute of Catalysis SB RAS, 5 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia

The catalytic behavior of Pd catalysts supported on a defective nanodiamond/graphene material (ND@G) was studied in propyne hydrogenation with parahydrogen, taking advantage of the possibility to control the character of metal distribution by changing metal loading. Two different catalysts were studied in this work: Pd1/ND@G with a monoatomic Pd distribution (0.11 wt %) and Pdn/ND@G comprising supported metal clusters (0.87 wt %). The monoatomic distribution of Pd in Pd1/ND@G was confirmed by XPS and HAADF-STEM methods. This catalyst demonstrated an outstanding selectivity to propene (up to 100%) in propyne hydrogenation. The activity of the two Pd catalysts in pairwise H2 addition to propyne was compared under the same experimental conditions by observing 1H NMR signal enhancements provided by the parahydrogen-induced polarization (PHIP) effect. The enhancements produced by the Pd1/ND@G catalyst were found to be ca. 6-fold larger than those observed with Pdn/ND@G, indicating that the character of metal distribution has important consequences for the performance of a catalyst and its efficiency in terms of PHIP effects.

Burueva D.B. , Sviyazov S.V. , Huang F. , Prosvirin I.P. , Bukhtiyarov A.V. , Bukhtiyarov V.I. , Liu H. , Koptyug I.V.
Pd on Nanodiamond/Graphene in Hydrogenation of Propyne with Parahydrogen
The Journal of Physical Chemistry C. 2021. V.125. N49. P.27221-27229. DOI: 10.1021/acs.jpcc.1c08424 WOS Scopus OpenAlex

Опубликована в печати:

16 дек. 2021 г.

Web of science:	WOS:000755081200018
Scopus:	2-s2.0-85120869743
OpenAlex:	W4200088327

БД	Цитирований
Web of science	6
OpenAlex	7
Scopus	5