Catalytic performance of perovskite-like oxide doped cerium (La2-xCexCoO4±y) as catalysts for dry reforming of methane

doi:10.1016/j.cjche.2018.05.016

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (2): 379-385.DOI: 10.1016/j.cjche.2018.05.016

• Catalysis, Kinetics and Reaction Engineering • 上一篇下一篇

Catalytic performance of perovskite-like oxide doped cerium (La_2-xCe_xCoO_4±y) as catalysts for dry reforming of methane

Yukun Bai, Yuqi Wang, Weijian Yuan, Wen Sun, Guoxia Zhang, Lan Zheng, Xiaolong Han, Lifa Zhou

School of Chemical Engineering, Northwest University, Xi'an 710069, China Shaanxi Provincial Institute of Energy Resources & Chemical Engineering, Xi'an 710069, China

收稿日期:2018-01-21 修回日期:2018-05-13 出版日期:2019-02-28 发布日期:2019-03-18
通讯作者: Yukun Bai, Yuqi Wang
基金资助:
Supported by the National Natural Science Foundation of China (21276209), the Natural Science Foundation of Shaanxi Province (2017JM2033) and the Local Service Fund of Education Department of Shaanxi Province (18JF031)

Catalytic performance of perovskite-like oxide doped cerium (La_2-xCe_xCoO_4±y) as catalysts for dry reforming of methane

Yukun Bai, Yuqi Wang, Weijian Yuan, Wen Sun, Guoxia Zhang, Lan Zheng, Xiaolong Han, Lifa Zhou

School of Chemical Engineering, Northwest University, Xi'an 710069, China Shaanxi Provincial Institute of Energy Resources & Chemical Engineering, Xi'an 710069, China

Received:2018-01-21 Revised:2018-05-13 Online:2019-02-28 Published:2019-03-18
Contact: Yukun Bai, Yuqi Wang
Supported by:
Supported by the National Natural Science Foundation of China (21276209), the Natural Science Foundation of Shaanxi Province (2017JM2033) and the Local Service Fund of Education Department of Shaanxi Province (18JF031)

摘要/Abstract

摘要： A series of oxides (La_2-xCe_xCoO_4±y) with perovskite-like structure were prepared by the Pechini sol-gel method for dry reforming of methane reaction (DRM). The prepared catalysts were characterized by BET, XRD, TGA, H₂-TPR and SEM. Experimental results indicate that the addition of Ce can impact both sample morphology and catalytic performance significantly compared with La₂CoO₄ catalyst, and LaCeCoO₄ presented the highest catalytic ability among all the samples. The Ce addition tends to increase the specific surface area of La_2-xCe_xCoO_4±y from 0.2 to 8.5 m²·g^-1, suggesting that LaCeCoO₄ catalyst contained more well-dispersed active sites and more space to reaction. Moreover, the catalytic performance and anti-coking ability were substantially improved after Ce addition during DRM, which may be attributed to the decrease of LaCoO₃ particle size and growth of oxygen storage capacity, respectively.

关键词: Perovskite-like, La_2-xCe_xCoO_4±, y, Methane dry reforming, Cerium, Syngas

Abstract: A series of oxides (La_2-xCe_xCoO_4±y) with perovskite-like structure were prepared by the Pechini sol-gel method for dry reforming of methane reaction (DRM). The prepared catalysts were characterized by BET, XRD, TGA, H₂-TPR and SEM. Experimental results indicate that the addition of Ce can impact both sample morphology and catalytic performance significantly compared with La₂CoO₄ catalyst, and LaCeCoO₄ presented the highest catalytic ability among all the samples. The Ce addition tends to increase the specific surface area of La_2-xCe_xCoO_4±y from 0.2 to 8.5 m²·g^-1, suggesting that LaCeCoO₄ catalyst contained more well-dispersed active sites and more space to reaction. Moreover, the catalytic performance and anti-coking ability were substantially improved after Ce addition during DRM, which may be attributed to the decrease of LaCoO₃ particle size and growth of oxygen storage capacity, respectively.

Key words: Perovskite-like, La_2-xCe_xCoO_4±, y, Methane dry reforming, Cerium, Syngas

Yukun Bai, Yuqi Wang, Weijian Yuan, Wen Sun, Guoxia Zhang, Lan Zheng, Xiaolong Han, Lifa Zhou. Catalytic performance of perovskite-like oxide doped cerium (La_2-xCe_xCoO_4±y) as catalysts for dry reforming of methane[J]. Chinese Journal of Chemical Engineering, 2019, 27(2): 379-385.

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Catalytic performance of perovskite-like oxide doped cerium (La_2-xCe_xCoO_4±y) as catalysts for dry reforming of methane

Catalytic performance of perovskite-like oxide doped cerium (La_2-xCe_xCoO_4±y) as catalysts for dry reforming of methane

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