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Author:

Rao, Zhiqiang (Rao, Zhiqiang.) | Wang, Kaiwen (Wang, Kaiwen.) | Cao, Yuehan (Cao, Yuehan.) | Feng, Yibo (Feng, Yibo.) | Huang, Zeai (Huang, Zeai.) | Chen, Yaolin (Chen, Yaolin.) | Wei, Shiqian (Wei, Shiqian.) | Liu, Luyu (Liu, Luyu.) | Gong, Zhongmiao (Gong, Zhongmiao.) | Cui, Yi (Cui, Yi.) | Li, Lina (Li, Lina.) | Tu, Xin (Tu, Xin.) | Ma, Ding (Ma, Ding.) | Zhou, Ying (Zhou, Ying.)

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Scopus SCIE

Abstract:

Dry reforming of methane (DRM) has been investigated for more than a century; the paramount stumbling block in its industrial application is the inevitable sintering of catalysts and excessive carbon emissions at high temperatures. However, the low-temperature DRM process still suffered from poor reactivity and severe catalyst deactivation from coking. Herein, we proposed a concept that highly durable DRM could be achieved at low temperatures via fabricating the active site integration with light irradiation. The active sites with Ni-O coordination (Ni-SA/CeO2) and Ni-Ni coordination (Ni-NP/CeO2) on CeO2, respectively, were successfully constructed to obtain two targeted reaction paths that produced the key intermediate (CH3O*) for anticoking during DRM. In particular, the operando diffuse reflectance infrared Fourier transform spectroscopy coupling with steady-state isotopic transient kinetic analysis (operando DRIFTS-SSITKA) was utilized and successfully tracked the anticoking paths during the DRM process. It was found that the path from CH3* to CH3O* over Ni-SA/CeO2 was the key path for anticoking. Furthermore, the targeted reaction path from CH3* to CH3O* was reinforced by light irradiation during the DRM process. Hence, the Ni-SA/CeO2 catalyst exhibits excellent stability with negligible carbon deposition for 230 h under thermo-photo catalytic DRM at a low temperature of 472 degrees C, while Ni-NP/CeO2 shows apparent coke deposition behavior after 0.5 h in solely thermal-driven DRM. The findings are vital as they provide critical insights into the simultaneous achievement of low-temperature and anticoking DRM process through distinguishing and directionally regulating the key intermediate species.

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Author Community:

  • [ 1 ] [Rao, Zhiqiang]Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Peoples R China
  • [ 2 ] [Zhou, Ying]Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610500, Peoples R China
  • [ 3 ] [Rao, Zhiqiang]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 4 ] [Cao, Yuehan]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 5 ] [Huang, Zeai]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 6 ] [Chen, Yaolin]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 7 ] [Liu, Luyu]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 8 ] [Zhou, Ying]Southwest Petr Univ, Sch New Energy & Mat, Chengdu 610500, Peoples R China
  • [ 9 ] [Wang, Kaiwen]Beijing Univ Technol, Beijing Key Lab Microstruct & Properties Adv Mat, Beijing 100020, Peoples R China
  • [ 10 ] [Feng, Yibo]Beijing Univ Technol, Beijing Key Lab Microstruct & Properties Adv Mat, Beijing 100020, Peoples R China
  • [ 11 ] [Wei, Shiqian]Leshan Normal Univ, Sch New Energy Mat & Chem, Leshan 614000, Peoples R China
  • [ 12 ] [Gong, Zhongmiao]Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, Vacuum Interconnected Nanotech Workstat, Suzhou 215123, Peoples R China
  • [ 13 ] [Cui, Yi]Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, Vacuum Interconnected Nanotech Workstat, Suzhou 215123, Peoples R China
  • [ 14 ] [Li, Lina]Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
  • [ 15 ] [Tu, Xin]Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3GJ, England
  • [ 16 ] [Ma, Ding]Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

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Source :

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

ISSN: 0002-7863

Year: 2023

Issue: 45

Volume: 145

Page: 24625-24635

1 5 . 0 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:20

Cited Count:

WoS CC Cited Count: 53

SCOPUS Cited Count: 37

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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