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Macroscopically shaped monolith of nanodiamonds @ nitrogen-enriched mesoporous carbon decorated SiC as a superior metal-free catalyst for the styrene production

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dc.contributor.author Ba H.
dc.contributor.author Luo J.
dc.contributor.author Liu Y.
dc.contributor.author Duong-Viet C.
dc.contributor.author Tuci G.
dc.contributor.author Giambastiani G.
dc.contributor.author Nhut J.
dc.contributor.author Nguyen-Dinh L.
dc.contributor.author Ersen O.
dc.contributor.author Su D.
dc.contributor.author Pham-Huu C.
dc.date.accessioned 2018-09-19T20:39:59Z
dc.date.available 2018-09-19T20:39:59Z
dc.date.issued 2017
dc.identifier.issn 0926-3373
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/143105
dc.description.abstract © 2016Nanodiamonds (NDs) are recognized as a class of robust metal-free catalysts for the steam-free, direct dehydrogenation (DDH) of ethylbenzene (EB) to styrene (ST). In spite of that, some main drawbacks, such as their powdery form along with their tendency to form aggregates, limit their full exploitation at the industrial level. In this work, we describe the preparation of macroscopically shaped monoliths consisting of silicon carbide-based foams coated with a nitrogen-rich mesoporous carbon matrix (NMC) as a non-innocent glue for highly dispersed ND fillers. The NMC phase is prepared from cheap and non-toxic food-grade components and it prevents the undesired NDs agglomeration thus maximizing the reagents exposure throughout the catalytic DDH tests. Moreover, the NMC phase represents a key source of surface basicity capable of inhibiting the occurrence of EB cracking side reactions during the catalytic runs. As a result, the ND@NMC/SiC composite shows excellent dehydrogenation performance already at low ND loading if compared with the powdery NDs and/or the SiC-supported NDs of the state-of-the-art. Noteworthy, the ND@NMC/SiC composite presents its best catalytic performance under DDH conditions close to those used in industrial plants (reaction temperture up to 600 °C and EB concentrations up to 10 vol.%) with high ST rates (λcatal. of 9.9 mmolST gcat−1 h−1), ST selectivity over 96% and long term stability on stream.
dc.relation.ispartofseries Applied Catalysis B: Environmental
dc.subject Direct dehydrogenation of ethylbenzene
dc.subject Food-grade components
dc.subject Macroscopically shaped monoliths
dc.subject Metal-free catalysis
dc.subject Nanodiamonds
dc.title Macroscopically shaped monolith of nanodiamonds @ nitrogen-enriched mesoporous carbon decorated SiC as a superior metal-free catalyst for the styrene production
dc.type Article
dc.relation.ispartofseries-volume 200
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 343
dc.source.id SCOPUS09263373-2017-200-SID84989829338


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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