SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2019, Vol. 27 ›› Issue (2): 379-385.DOI: 10.1016/j.cjche.2018.05.016

• Catalysis, kinetics and reaction engineering • Previous Articles     Next Articles

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

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

  1. 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:2019-03-18 Published:2019-02-28
  • 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)

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

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

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

Abstract: A series of oxides (La2-xCexCoOy) 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 La2-xCexCoOy 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, La2-xCexCoO4±, y, Methane dry reforming, Cerium, Syngas

摘要: A series of oxides (La2-xCexCoOy) 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 La2-xCexCoOy 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, La2-xCexCoO4±, y, Methane dry reforming, Cerium, Syngas