Nature of Active Palladium Sites on Nitrogen Doped Carbon Nanofibers in Selective Hydrogenation of Acetylene | Sciact - CRIS-система Института катализа

Nature of Active Palladium Sites on Nitrogen Doped Carbon Nanofibers in Selective Hydrogenation of Acetylene Научная публикация

Журнал

Diamond and Related Materials
ISSN: 0925-9635 , E-ISSN: 1879-0062

Вых. Данные

Год: 2018, Том: 89, Страницы: 67-73 Страниц : 7 DOI: 10.1016/j.diamond.2018.08.007

Ключевые слова

Ni-Cu CATALYST; Pd/C CATALYSTS; FORMIC-ACID; ETHYLENE/AMMONIA MIXTURE; ELECTRICAL-CONDUCTIVITY; FUSED DIPORPHYRINS; STRUCTURAL-CHANGES; METAL-CLUSTERS; IN-SITU; DECOMPOSITION

Авторы

Chesnokov V.V. ¹ , Kriventsov V.V. ¹ , Malykhin S.E. ² , Svintsitskiy D.A. ^1,2 , Podyacheva O.Yu. ^1,2 , Lisitsyn A.S. ¹ , Richards Ryan M. ³

Организации

1	Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Ul. Pirogova 2, Novosibirsk 630090, Russia
3	Department of Chemistry, Colorado School of Mines, 1500 Illinois, Golden, CO 80401, USA

Информация о финансировании (4)

1	Российский научный фонд	17-73-30032
2	National Science Foundation	1214068
3	Российский фонд фундаментальных исследований	16-03-01139
4	Российский фонд фундаментальных исследований	18-03-01251

The nature of the active sites for palladium supported on nitrogen doped carbon nanofibers (Pd/N-CNFs) catalysts for selective hydrogenation of acetylene to ethylene was examined. Palladium concentrations of 0.05–0.6 wt% were deposited on carbon nanofibers doped by nitrogen atoms (N-CNFs) and characterized by transmission electron microscopy (TEM), CO chemisorption, X-ray photoelectron spectroscopy (XPS), Extended X-ray Absorption Fine Structure (EXAFS) and quantum-chemical calculations. The data indicates that the Pd initially forms highly-dispersed particles. However, decreasing of the Pd concentration on the carbon nanofibers doped by nitrogen atoms below 0.15 wt% led to stabilization of the metal in the atomic state. Porphyrin-like defects with four nitrogen atoms are formed on the surface of the CNFs and strongly interact with palladium atoms, and thus can be sites for stabilization of atomic Pd. The catalytic activity and selectivity of Pd/N-CNFs catalysts depend on the ratio of these two palladium states.

Chesnokov V.V. , Kriventsov V.V. , Malykhin S.E. , Svintsitskiy D.A. , Podyacheva O.Y. , Lisitsyn A.S. , Richards R.M.
Nature of Active Palladium Sites on Nitrogen Doped Carbon Nanofibers in Selective Hydrogenation of Acetylene
Diamond and Related Materials. 2018. V.89. P.67-73. DOI: 10.1016/j.diamond.2018.08.007 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	18 мая 2018 г.
Принята к публикации:	14 авг. 2018 г.
Опубликована online:	14 авг. 2018 г.
Опубликована в печати:	1 окт. 2018 г.

Web of science:	WOS:000449240000008
Scopus:	2-s2.0-85051671764
РИНЦ:	35729889
Chemical Abstracts:	2018:1550450
Chemical Abstracts (print):	169:383339
OpenAlex:	W2886636240

БД	Цитирований
Scopus	24
РИНЦ	23
Web of science	22
OpenAlex	23