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author:

Mu, J. (Mu, J..) [1] | Shi, J. (Shi, J..) [2] | France, L.J. (France, L.J..) [3] | Wu, Y. (Wu, Y..) [4] | Zeng, Q. (Zeng, Q..) [5] | Liu, B. (Liu, B..) [6] | Jiang, L. (Jiang, L..) [7] | Long, J. (Long, J..) [8] | Li, X. (Li, X..) [9]

Indexed by:

Scopus

Abstract:

Direct dehydrogenation of isobutane to isobutene has drawn extensive attention for synthesizing various chemicals. The Mo-based catalysts hold promise as an alternative to the toxic CrOx-And scarce Pt-based catalysts. However, the low activity and rapid deactivation of the Mo-based catalysts greatly hinder their practical applications. Herein, we demonstrate a feasible approach toward the development of efficient and non-noble metal dehydrogenation catalysts based on Mo-CT hybrid nanowires calcined at different temperatures. In particular, the optimal Mo-C700 catalyst exhibits isobutane consumption rate of 3.9 mmol g-1 h-1 and isobutene selectivity of 73% with production rate of 2.8 mmol g-1 h-1. The catalyst maintained 90% of its initial activity after 50 h of reaction. Extensive characterizations reveal that such prominent performance is well correlated with the adsorption abilities of isobutane and isobutene and the formation of IÀ-MoC species. In contrast, the generation of β-Mo2C crystalline phase during long-Term reaction causes minor decline in activity. Compared to MoO2 and β-Mo2C, IÀ-MoC plays a role more likely in suppressing the cracking reaction. This work demonstrates a feasible approach toward the development of efficient and non-noble metal dehydrogenation catalysts. © 2018 American Chemical Society.

Keyword:

carbide; dehydrogenation; isobutane; isobutene; molybdenum

Community:

  • [ 1 ] [Mu, J.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 2 ] [Shi, J.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 3 ] [France, L.J.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 4 ] [Wu, Y.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 5 ] [Zeng, Q.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 6 ] [Liu, B.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 7 ] [Jiang, L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, 350002, China
  • [ 8 ] [Long, J.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
  • [ 9 ] [Li, X.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China

Reprint 's Address:

  • [Li, X.]School of Chemistry and Chemical Engineering, State Key Laboratory of Pulp and Paper Engineering, South China University of TechnologyChina

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Source :

ACS Applied Materials and Interfaces

ISSN: 1944-8244

Year: 2018

Issue: 27

Volume: 10

Page: 23112-23121

8 . 4 5 6

JCR@2018

8 . 5 0 0

JCR@2023

ESI HC Threshold:284

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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