Ni/CeO2 Catalyst Prepared via Microimpinging Stream Reactor with High Catalytic Performance for CO2 Dry Reforming Methane

Wang, Yadong1; Hu, Qing2; Wang, Ximing2; Huang, Yanpeng2; Wang, Yuanhao2; Wang, Fenghuan1

2022-06-01

10.3390/catal12060606

CATALYSTS   影响因子和分区

2073-4344

Methane reforming with carbon dioxide (DRM) is one promising way to achieve carbon neutrality and convert methane to syngas for high-value chemical production. Catalyst development with better performance is the key to its potential large-scale industrial application due to its deactivation caused by carbon deposition and metal sintering. Hence, a Ni/CeO2 catalyst (Ni/CeO2-M) with higher CO2 conversion and better stability is prepared, supported on CeO2 precipitated via a novel microimpinging stream reactor. A series of ex-situ or in-situ characterizations, such as CO titration measurements, two-step transient surface reaction (two-step TSR), CO2 and CH4 temperature-programmed surface reaction (CO2-TPSR and CH4-TPSR), X-ray absorption fine structure (XAFS), and in-situ Raman spectroscopy study, were used to investigate its structure and mechanism. In contrast to Ni supported on commercial CeO2 (Ni/CeO2-C), the Ni/CeO2-M catalyst with stronger lattice oxygen mobility and higher oxygen storage capacity enhances its CO2 activation ability and carbon deposition. The Ni particle size of the Ni/CeO2-M catalyst decreased, and a higher oxidation state was obtained due to the strong metal-support interaction. Besides the reaction performance improvement of the Ni/CeO2-M catalyst, the novel microimpinging stream reactor could achieve catalyst continuous production with a high preparation efficiency. This work provides a novel method for the high-performance catalyst preparation for DRM reaction and its mechanism study gives a deep insight into high-performance catalyst development via bottom-up study.

dry reforming of methane oxygen vacancy Ni CeO2 catalyst

SCI

英语

通讯

Business University[PXM2020_014213_000017]

Chemistry

Chemistry, Physical

WOS:000819611300001

MDPI

Web of Science

1.Beijing Technol & Business Univ BTBU, Sch Light Ind, Beijing 100048, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, SUSTech Engn Innovat Ctr, Shenzhen 518055, Peoples R China

Wang, Yadong,Hu, Qing,Wang, Ximing,et al. Ni/CeO2 Catalyst Prepared via Microimpinging Stream Reactor with High Catalytic Performance for CO2 Dry Reforming Methane[J]. CATALYSTS,2022,12(6).

Wang, Yadong,Hu, Qing,Wang, Ximing,Huang, Yanpeng,Wang, Yuanhao,&Wang, Fenghuan.(2022).Ni/CeO2 Catalyst Prepared via Microimpinging Stream Reactor with High Catalytic Performance for CO2 Dry Reforming Methane.CATALYSTS,12(6).

Wang, Yadong,et al."Ni/CeO2 Catalyst Prepared via Microimpinging Stream Reactor with High Catalytic Performance for CO2 Dry Reforming Methane".CATALYSTS 12.6(2022).