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author:

Mu, Jiali (Mu, Jiali.) [1] | Shi, Junjun (Shi, Junjun.) [2] | France, Liam John (France, Liam John.) [3] | Wu, Yongshan (Wu, Yongshan.) [4] | Zeng, Qiang (Zeng, Qiang.) [5] | Liu, Baoan (Liu, Baoan.) [6] | Jiang, Lilong (Jiang, Lilong.) [7] (Scholars:江莉龙) | Long, Jinxing (Long, Jinxing.) [8] | Li, Xuehui (Li, Xuehui.) [9]

Indexed by:

EI Scopus SCIE

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-C-T hybrid nanowires calcined at different temperatures. In particular, the optimal Mo-C-700 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 eta-MoC species. In contrast, the generation of beta-Mo2C crystalline phase during long-term reaction causes minor decline in activity. Compared to MoO2 and beta-Mo2C, eta-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.

Keyword:

carbide dehydrogenation isobutane isobutene molybdenum

Community:

  • [ 1 ] [Mu, Jiali]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 2 ] [Shi, Junjun]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 3 ] [France, Liam John]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 4 ] [Wu, Yongshan]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 5 ] [Zeng, Qiang]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 6 ] [Liu, Baoan]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 7 ] [Long, Jinxing]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 8 ] [Li, Xuehui]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
  • [ 9 ] [Jiang, Lilong]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • [Li, Xuehui]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China

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Source :

ACS APPLIED MATERIALS & 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 Discipline: MATERIALS SCIENCE;

ESI HC Threshold:284

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 14

SCOPUS Cited Count: 14

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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