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Palladium nanoparticles on dendrimer-containing supports as catalysts for hydrogenation of unsaturated hydrocarbonsстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 21 октября 2017 г.
- Авторы: Karakhanov Edward A., Maximov Anton L., Zakharyan Elena M., Zolotukhina Anna V., Ivanov Andrey O.
- Журнал: MOLECULAR CATALYSIS
- Том: 440
- Год издания: 2017
- Первая страница: 107
- Последняя страница: 119
- DOI: 10.1016/j.mcat.2017.07.011
- Аннотация: A method for the synthesis of encapsulated palladium nanoparticles of size to 5 nm in the pores of specially prepared supports, which are polymer networks based on poly(amidoamine) (PAMAM) and poly(propylene imine) (PPI) dendrimers, is proposed. It was found that particle size distributions, as well as catalytic activity and selectivity of the resulting materials in hydrogenation of unsaturated compounds significantly depend on the structure features of the support (nature and generation of dendrimer, size and rigidity of a crosslinking agent, and the use of a template in the synthesis). The best values of specific activity were achieved for styrene (86,000 h−1), phenylacetylene (103,700 h−1) and 1,3-cyclohexadiene (65,000 h−1). It was established that the catalysts based on PAMAM dendrimers, synthesized in the presence of template, were superior to their analogues, synthesized without template, in terms of activity. An inverse relationship was observed for catalysts, based on PPI dendrimers,for all substrates with the exception of phenylacetylene. The catalysts based on palladium nanoparticles, encapsulated into dendrimer networks, can be repeatedly used without a noticeable loss of activity.
- Добавил в систему: Караханов Эдуард Аветисович