Pd Clusters Supported on Amorphous, Low-Porosity Carbon Spheres for Hydrogen Production from Formic Acid | Sciact - CRIS-система Института катализа

Pd Clusters Supported on Amorphous, Low-Porosity Carbon Spheres for Hydrogen Production from Formic Acid Научная публикация

Журнал

ACS Applied Materials and Interfaces
ISSN: 1944-8244 , E-ISSN: 1944-8252

Вых. Данные

Год: 2015, Том: 7, Номер: 16, Страницы: 8719-8726 Страниц : 8 DOI: 10.1021/acsami.5b00983

Ключевые слова

carbon spheres, formic acid, functional groups, hydrogen production, Pd acetate

Авторы

Bulushev Dmitri A. ^1,2,4 , Bulusheva Lyubov G. ^3,4 , Beloshapkin Sergey ⁵ , O'Connor Thomas ^1,5 , Okotrub Alexander V. ^3,4 , Ryan Kevin M. ^1,5

Организации

1	Chemical & Environmental Sciences Department, University of Limerick, Limerick, Ireland
2	Boreskov Institute of Catalysis, SB RAS, Novosibirsk 630090, Russia
3	Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk 630090, Russia
4	Novosibirsk State University, Novosibirsk 630090, Russia
5	Materials & Surface Science Institute, University of Limerick, Limerick, Ireland

Информация о финансировании (6)

1	University of Limerick
2	European Commission
3	Science Foundation Ireland	06/CP/E007
4	Science Foundation Ireland	06/IN.1/I85
5	Science Foundation Ireland	11-PI-1148
6	Government of Ireland

Amorphous, low-porosity carbon spheres on the order of a few micrometers in size were prepared by carbonization of squalane (C30H62) in supercritical CO2 at 823 K. The spheres were characterized and used as catalysts’ supports for Pd. Near-edge X-ray absorption fine structure studies of the spheres revealed sp2 and sp3 hybridized carbon. To activate carbons for interaction with a metal precursor, often oxidative treatment of a support is needed. We showed that boiling of the obtained spheres in 28 wt % HNO3 did not affect the shape and bulk structure of the spheres, but led to creation of a considerable amount of surface oxygen-containing functional groups and increase of the content of sp2 hybridized carbon on the surface. This carbon was seen by scanning transmission electron microscopy in the form of waving graphene flakes. The H/C atomic ratio in the spheres was relatively high (0.4) and did not change with the HNO3 treatment. Palladium was deposited by impregnation with Pd acetate followed by reduction in H2. This gave uniform Pd clusters with a size of 2–4 nm. The Pd supported on the original C spheres showed 2–3 times higher catalytic activity in vapor phase formic acid decomposition and higher selectivity for H2 formation (98–99%) than those for the catalyst based on the HNO3 treated spheres. Using of such low-porosity spheres as a catalyst support should prevent mass transfer limitations for fast catalytic reactions.

Bulushev D.A. , Bulusheva L.G. , Beloshapkin S. , O'Connor T. , Okotrub A.V. , Ryan K.M.
Pd Clusters Supported on Amorphous, Low-Porosity Carbon Spheres for Hydrogen Production from Formic Acid
ACS Applied Materials and Interfaces. 2015. V.7. N16. P.8719-8726. DOI: 10.1021/acsami.5b00983 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex

Поступила в редакцию:	3 февр. 2015 г.
Принята к публикации:	7 апр. 2015 г.
Опубликована в печати:	7 апр. 2015 г.
Опубликована online:	15 апр. 2015 г.

Web of science:	WOS:000353931300042
Scopus:	2-s2.0-84929484550
РИНЦ:	24033123
Chemical Abstracts:	2015:589343
Chemical Abstracts (print):	162:540527
PMID (PubMed):	25848960
OpenAlex:	W2063242904

БД	Цитирований
Web of science	40
Scopus	40
РИНЦ	36
OpenAlex	41