燃料化学学报（中英文）2025，Vol.53Issue(12)：1758-1768,11.DOI:10.1016/S1872-5813(25)60572-X
Ni/CaO-CeZrO2耦合CO2捕集和甲烷干重整性能研究
Study on the performance and mechanism of Ni/CaO-CeZrO2 coupling CO2 capture and dry reforming of methane
摘要
Abstract
The coupled technology of calcium looping and dry reforming of methane(CaL@DRM)shows great promise in the fields of CO2 capture and conversion,as well as the resource-utilization of methane.Nevertheless,traditional calcium-based adsorbents are prone to sintering and coking at high temperature,which severely restricts their performance.In this study,a series of Ni/CaO-CeZrO2 bifunctional catalysts were prepared via a combination of co-precipitation and impregnation methods,based on the traditional Ni/CaO,and applied to CaL@DRM.The catalysts were characterized by XRD,SEM,EDS,XPS,TG,Raman,etc.,and their CaL@DRM performance was investigated.Experimental results demonstrate that,at 650 ℃,the Ni/10CaO-CeZrO2 catalyst achieves a CO2 capture rate of 2.00 mmol/g,a CH4 conversion rate as high as 95％,and a CO selectivity of 79％.Its performance significantly outperforms most reported bifunctional materials and traditional dry reforming of methane catalysts.Moreover,after 50 cycles of testing,no significant decline in catalytic activity is observed.CaO provides basic active sites and adsorption capacity for CO2 capture.The introduction of CeZrO2 significantly increases the lattice oxygen content of the material,enhances the dispersion of Ni,promotes CO2 capture and dry reforming of CH4,and effectively suppresses sintering and coking,thus greatly improving the cyclic stability of CaL@DRM.This study provides a theoretical basis for a deeper understanding of the coupling process of CO2 capture and dry reforming of methane,and offers guidance for the design and development of high-performance multifunctional materials.关键词
甲烷干重整/碳捕集/积炭/晶格氧/双功能催化剂Key words
dry reforming of methane/carbon capture/coking/lattice oxygen/bifunctional catalyst分类
化学化工引用本文复制引用
陈禹昊,祝星,林敏,魏恒宇,高迪..Ni/CaO-CeZrO2耦合CO2捕集和甲烷干重整性能研究[J].燃料化学学报（中英文）,2025,53(12):1758-1768,11.基金项目
The project was supported by the National Key R&D Program of China(2024YFB4206102),National Natural Science Foundation of China(52066007,52266007,22279048)and the Yunnan Major Scientific and Technological Projects(202202AG050017).国家重点研发计划(2024YFB4206102),国家自然科学基金(52066007,52266007,22279048)云南省重大科技项目(202202AG050017)资助 （2024YFB4206102）
