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Research Article

Fully-exposed Pt clusters stabilized on Sn-decorated nanodiamond/graphene hybrid support for efficient ethylbenzene direct dehydrogenation

Linlin Wang1,2, Xuetao Qin3, Ting Sun1( ), Xiangbin Cai4, Mi Peng3, Zhimin Jia2,5, Xiaowen Chen2,5, Ning Wang4, Jiangyong Diao2( ), Hongyang Liu2,5( ), Ding Ma3
Department of Chemistry, Northeastern University, Shenyang 110819, China
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Beijing National Laboratory for Molecular Engineering, College of Chemistry and Molecular Engineering and College of Engineering, BIC-ESAT, Peking University, Beijing 100871, China
Department of Physics, Hong Kong University of Science and Technology, Kowloon, Hong Kong 999077, China
School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Graphical Abstract

The fully-exposed Pt clusters were fabricated on the Sn-decorated nanodiamond/graphene (Pt/Sn-ND@G) hybrid support, and exhibited higher yields and better stability in the direct dehydrogenation of ethylbenzene to styrene, in comparison with the typical Pt nanoparticles.

Abstract

The pursuit of energy conservation and environmental protection has always been a hot topic in the catalytic fields, which is inseparable from the rational designing of efficient catalysts and an in-depth understanding of the catalytic reaction mechanism. In this work, fully-exposed Pt clusters were fabricated on the atomically dispersed Sn decorated nanodiamond/graphene (Sn-ND@G) hybrid support and employed for direct dehydrogenation (DDH) of ethylbenzene (EB) to styrene (ST). The detailed structural characterizations revealed the fully-exposed Pt clusters were stabilized on Sn-ND@G, assisted by the spatial separation of atomically dispersed Sn species. The as-prepared Pt/Sn-ND@G catalyst showed enhanced ST yield (136.2 molEB·molPt−1·h−1 EB conversion rate and 99.7% ST selectivity) and robust long-term stability at 500 °C for the EB DDH reaction, compared with the traditional ND@G supported Pt nanoparticle catalyst (Pt/ND@G). The ST prefers to desorb from the fully-exposed Pt clusters, resulting in the enhanced DDH catalytic performance of the Pt/Sn-ND@G catalyst. The present work paves a new way for designing highly dispersed and stable supported metal catalysts for DDH reactions.

Keywords

Pt clusterethylbenzene dehydrogenationfully-exposed catalystheterogeneous catalysis

Electronic Supplementary Material

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Nano Research
Volume 15 Issue 12,
December 2022
Pages 10029-10036
DOI: 10.1007/s12274-022-4650-6
Cite this article:
Wang L, Qin X, Sun T, et al. Fully-exposed Pt clusters stabilized on Sn-decorated nanodiamond/graphene hybrid support for efficient ethylbenzene direct dehydrogenation. Nano Research, 2022, 15(12): 10029-10036. https://doi.org/10.1007/s12274-022-4650-6
Topics:
Nanocatalysts
Part of a topical collection:
NR45 Awards in Nanocatalysis, 2022

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Received: 28 March 2022
Revised: 09 June 2022
Accepted: 10 June 2022
Published: 30 June 2022
© Tsinghua University Press 2022
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