Effect of boron addition on the MoO3/CeO2-Al2O3 catalyst in the sulfur-resistant methanation

doi:10.1016/j.cjche.2017.08.011

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (3): 509-513.DOI: 10.1016/j.cjche.2017.08.011

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

Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation

Baowei Wang, Wenxia Yu, Weihan Wang, Zhenhua Li, Yan Xu, Xinbin M

Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

收稿日期:2017-04-27 修回日期:2017-08-16 出版日期:2018-03-28 发布日期:2018-04-18
通讯作者: Baowei Wang
基金资助:
Supported by the National High Technology Research and Development Program of China (863 Project) (2015AA050504) and the National Natural Science Foundation of China (21576203).

Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation

Baowei Wang, Wenxia Yu, Weihan Wang, Zhenhua Li, Yan Xu, Xinbin M

Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Received:2017-04-27 Revised:2017-08-16 Online:2018-03-28 Published:2018-04-18
Contact: Baowei Wang
Supported by:
Supported by the National High Technology Research and Development Program of China (863 Project) (2015AA050504) and the National Natural Science Foundation of China (21576203).

摘要/Abstract

摘要： The effect of boron on the performance of MoO₃/CeO₂-Al₂O₃ catalysts, which were prepared with impregnation method, was investigated. The catalysts were characterized with N₂ adsorption-desorption, XRD, H₂-TPR, and NH₃-TPD, and were tested in sulfur-resistant methanation. The results indicated that the MoO₃/CeO₂-Al₂O₃ catalysts modified by boron showed higher catalytic performance in sulfur-resistant methanation. The CO conversion increased from 47% to 62% with 0.5 wt% boron content. When the content of boron was under 0.5 wt%, the results suggested there was an increase in the amorphous form of MoO₃ caused by the generation of weak and intermediate acid sites, which had weakened the interaction between the active components and supports. While, the catalyst added 2.0 wt% boron showed the strong acid sites and the largest crystalline size resulting in the uneven distribution of ceria.

关键词: Boron, Sulfur-resistant, Methanation, Mo-based catalyst, Composite support

Abstract: The effect of boron on the performance of MoO₃/CeO₂-Al₂O₃ catalysts, which were prepared with impregnation method, was investigated. The catalysts were characterized with N₂ adsorption-desorption, XRD, H₂-TPR, and NH₃-TPD, and were tested in sulfur-resistant methanation. The results indicated that the MoO₃/CeO₂-Al₂O₃ catalysts modified by boron showed higher catalytic performance in sulfur-resistant methanation. The CO conversion increased from 47% to 62% with 0.5 wt% boron content. When the content of boron was under 0.5 wt%, the results suggested there was an increase in the amorphous form of MoO₃ caused by the generation of weak and intermediate acid sites, which had weakened the interaction between the active components and supports. While, the catalyst added 2.0 wt% boron showed the strong acid sites and the largest crystalline size resulting in the uneven distribution of ceria.

Key words: Boron, Sulfur-resistant, Methanation, Mo-based catalyst, Composite support

Baowei Wang, Wenxia Yu, Weihan Wang, Zhenhua Li, Yan Xu, Xinbin M. Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 509-513.

Baowei Wang, Wenxia Yu, Weihan Wang, Zhenhua Li, Yan Xu, Xinbin M. Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation[J]. Chin.J.Chem.Eng., 2018, 26(3): 509-513.

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Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation

Effect of boron addition on the MoO₃/CeO₂-Al₂O₃ catalyst in the sulfur-resistant methanation

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