Document Type

Article

Publication Date

3-27-2019

Subject: LCSH

Dehydrogenation, Heterogeneous catalysis

Disciplines

Chemical Engineering | Chemistry

Abstract

Tin assisted fully exposed Pt clusters are fabricated on the core-shell nanodiamond@graphene (ND@G) hybrid support (a-PtSn/ND@G). The obtained atomically dispersed Pt clusters, with an average Pt atom number of 3, were anchored over the ND@Gsupport by the assistance of Sn atoms as a partition agent and through the Pt-C bond between Pt clusters and defect-rich graphene nanoshell. The atomically dispersed Pt clusters guaranteed a full metal availability to the reactants, a high thermal stability, and an optimized adsorption/desorption behavior. It inhibits the side reactions and enhances catalytic performance in direct dehydrogenation of n-butane at a low temperature of 450 °C, leading to >98% selectivity toward olefin products, and the turnover frequency (TOF) of a-PtSn/ND@G is approximately 3.9 times higher than that of the traditional Pt3Sn alloy catalyst supported on Al2O3 (Pt3Sn/Al2O3).

Comments

This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in ACS Catalysis, copyright ©2019 American Chemical Society, after peer review. To access the final edited and published work see https://doi.org/10.1021/acscatal.9b00601 or see http://pubs.acs.org/page/policy/articlesonrequest/index.html

DOI

10.1021/acscatal.9b00601

Publisher Citation

Zhang, J., Deng, Y., Cai, X., Chen, Y., Peng, M., Jia, Z., ... & Xiao, D. (2019). Tin Assisted Fully Exposed Platinum Clusters Stabilized on Defect-Rich Graphene for Dehydrogenation Reaction. ACS Catalysis. DOI: 10.1021/acscatal.9b00601

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