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Phenylacetylene hydrogenation on Fe@C and Ni@C core–shell nanoparticles: About intrinsic activity of graphene-like carbon layer in H2 activationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 2 сентября 2016 г.
- Авторы: Erokhin A.V., Lokteva E.S., Yermakov A.Y., Boukhvalov D.W., Maslakov K.I., Golubina E.V., Uimin M.A.
- Журнал: Carbon
- Том: 74
- Год издания: 2014
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 291
- Последняя страница: 301
- DOI: 10.1016/j.carbon.2014.03.034
- Аннотация: Me@C nanocomposites were prepared by evaporation of overheated liquid drop of Me in the flow of inert gas containing a hydrocarbon. The resulting carbon-coated nickel and iron nanoparticles contain metal cores of about 5 nm in size that are wrapped in a few layers of graphene-like carbon. Experimental data and theoretical results give evidence of the ability of carbon coating in nanocomposites Fe@C and Ni@C to H2 activation by dissociative adsorption due to the presence of space and structure defects and/or the presence of transition metal in subsurface layer. Since molecular hydrogen dissociation is the key step of hydrogenation reactions, both Ni@C and Fe@C provide high conversion of phenylacetylene (PA) (about 100%) during hydrogenation at the temperatures above 150 and 300°C respectively. Fe@C provides excellent styrene (ST) selectivity: 86% at 99% PA conversion at 300°C. ST selectivity is moderate on Ni@C (about 60%) in the temperature range of 100 - 150°С and low at higher temperatures.
- Добавил в систему: Локтева Екатерина Сергеевна