首页|Enhancing CO2 methanation via doping CeO2 to Ni/Al2O3 and stacking catalyst beds

Enhancing CO2 methanation via doping CeO2 to Ni/Al2O3 and stacking catalyst beds

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Enhancing CO2 methanation via doping CeO2 to Ni/Al2O3 and stacking catalyst beds
This work synthesized a series of Ni/CeO2/Al2O3 catalysts with varying CeO2 doping amounts to enhance low-temperature CO2 methanation.The introduction of CeO2 weakens the interaction between Ni and Al2O3,leading to the formation of Ni-CeO2 active sites.This results in a high dispersion of Ni and CeO2,improved catalyst reducibility,increased number of active sites,and enhanced the CO2 methanation.This work further investigated the impact of WHSV and catalyst stacking configuration to enhance the re-action.When the catalyst is stacked into three segments with a temperature gradient of 330 ℃,300 ℃,and 250 ℃ under WHSV=9000 ml·h-1·g-1,the CO2 conversion significantly increases to 95％,which is remarkably close to the thermodynamic equilibrium(96％).

Ni/CeO2/Al2O3CeO2 dopingMetal-support interactionStacking catalyst bedsBed temperature

Yutong Pan、Pengju Gao、Shixiong Tang、Xiaoyu Han、Ziwen Hao、Jiyi Chen、Zhenmei Zhang、Heng Zhang、Xiaohui Zi、Maoshuai Li、Shiwei Wang、Yue Wang、Xinbin Ma

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School of Chemical Engineering and Technology,Key Laboratory for Green Chemical Technology of Ministry of Education,Collaborative Innovation Center of Chemical Science and Engineering,National Industry-Education Integration Platform of Energy Storage,Tianjin University,Tianjin 300350,China

Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China

Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City,Fuzhou 350207,China

Zhejiang Institute of Tianjin University,Ningbo Key Laboratory of Green Petrochemical Carbon Emission Reduction Technology and Equipment,Ningbo 315200,China

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Ni/CeO2/Al2O3 CeO2 doping Metal-support interaction Stacking catalyst beds Bed temperature

2024

10.1016/j.cjche.2024.07.021

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.75(11)