DICP OpenIR
Structure-performance relationship of nanodiamonds @ nitrogen-doped mesoporous carbon in the direct dehydrogenation of ethylbenzene
Liu, Yuefeng1,2; Ba, Housseinou2; Luo, Jingjie3; Wu, Kuang-Hsu3; Nhut, Jean-Mario2; Su, Dang Sheng1,3; Pham-Huu, Cuong2
KeywordNanodiamond Nitrogen-doped Mesoporous Carbon Dehydrogenation Of Ethylbenzene Functional Groups Food-graded Compounds
Source PublicationCATALYSIS TODAY
2018-03-01
ISSN0920-5861
DOI10.1016/j.cattod.2017.05.010
Volume301Pages:38-47
Indexed BySCI ; ISTP
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordMETAL-FREE CATALYST ; STEAM-FREE DEHYDROGENATION ; STYRENE PRODUCTION ; OXYGEN REDUCTION ; OXIDATIVE DEHYDROGENATION ; SURFACE-CHEMISTRY ; FUNCTIONAL-GROUPS ; NANOTUBES ; NANOCARBON ; COMPOSITE
AbstractNanocarbon materials have been reported as an alternative robust metal-free catalyst in the field of the catalytic dehydrogenation with improved catalytic performance as well as stability. In this study, the hybrid metal-free catalyst consisting of dispersed nanodiamonds within a nitrogen-doped mesoporous carbon (ND@NMC) phase was investigated. Such material with high effective surface area and porosity was prepared under different thermal treatment temperatures and further evaluated for the direct dehydrogenation (DDH) of ethylbenzene (EB) to styrene (ST). The characterization techniques such as N-2 adsorption-desorption, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy and Raman spectroscopic analysis were used to investigate the surface properties and structures of the as-prepared ND@NMC composites. The ND@NMC-700 catalyst annealed at 700 degrees C presented a ST specific reaction rate and a relative areal activity of 5.8 mmolST g(catalyst)(-1) h(-1) and 0.28 mu mol(ST) m(-2) h(-1) with a ST selectivity of 99.6%, which is the highest DDH activity among the investigated nanocarbons including ND, carbon nanotubes, NMC and ND@MC (ND covered by mesoporous carbon) catalysts. The superior dehydrogenation performance could be attributed to the high dispersion of the metal-free nanodiamond centers within the NMC layer which provided a well surface contact with the reactant. It can also be confirmed that the rational contents of ketone (C = O) functional groups, as well as the opened porous network in ND@NMC-700 catalyst resulted to the superior DDH activity and styrene selectivity. Moreover, the presented nitrogen groups are beneficial for construction of surface defects and porosity as well as the improvement of styrene selectivity.
Language英语
WOS IDWOS:000417054300007
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/168323
Collection中国科学院大连化学物理研究所
Corresponding AuthorLiu, Yuefeng; Su, Dang Sheng; Pham-Huu, Cuong
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Strasbourg, CNRS, UMR 7515, ICPEES,ECPM, 25 Rue Becquerel, F-67087 Strasbourg 02, France
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yuefeng,Ba, Housseinou,Luo, Jingjie,et al. Structure-performance relationship of nanodiamonds @ nitrogen-doped mesoporous carbon in the direct dehydrogenation of ethylbenzene[J]. CATALYSIS TODAY,2018,301:38-47.
APA Liu, Yuefeng.,Ba, Housseinou.,Luo, Jingjie.,Wu, Kuang-Hsu.,Nhut, Jean-Mario.,...&Pham-Huu, Cuong.(2018).Structure-performance relationship of nanodiamonds @ nitrogen-doped mesoporous carbon in the direct dehydrogenation of ethylbenzene.CATALYSIS TODAY,301,38-47.
MLA Liu, Yuefeng,et al."Structure-performance relationship of nanodiamonds @ nitrogen-doped mesoporous carbon in the direct dehydrogenation of ethylbenzene".CATALYSIS TODAY 301(2018):38-47.
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