Reaction kinetics and mechanisms for carbon-negative chemical looping gasification of biomass coupled with CO2 splitting
文献类型：期刊论文
| 作者 | Wei, Guoqiang2; Yao, Yecheng2; Wu, Xiaoyan2; Yang, Xixian2; Yuan, Haoran3; Huang, Zhen3; Gao, Zhongwang2; Peng, Shuai4; Cai, Yingjie4; Kang, Zhanxiao1 |
| 刊名 | INDUSTRIAL CROPS AND PRODUCTS
 |
| 出版日期 | 2024-12-15 |
| 卷号 | 222页码:10 |
| 关键词 | Biomass CO 2 splitting CLGCS Reaction kinetic Lattice oxygen Oxygen carrier |
| ISSN号 | 0926-6690 |
| DOI | 10.1016/j.indcrop.2024.120083 |
| 通讯作者 | Yang, Xixian(yangxx@scau.edu.cn) |
| 英文摘要 | Chemical looping gasification of biomass coupled with CO2 splitting (CLGCS) was proposed to produce highquality syngas from biomass and split CO2 into CO by using Fe/Ni mixed oxygen carrier without extra catalyst and excessive energy consumption, providing a carbon negative emission technology for the cascade utilization of biomass and greenhouse gas. In this work, the reaction kinetic and the activation energy were investigated based on the non-model kinetic model and the lattice oxygen migration mechanism was revealed by the valence evolution of oxygen carriers. The chemical looping gasification (CLG) involved four stages based on the activation energy distribution, which are dehydration, pyrolysis, gas reforming, and char reacting. Ni provided an active site in pyrolysis stage, resulting in a rapid decline activation energy. The higher energy barrier of 341.38 kJ/mol needed to be overcome in char reacting due to the solid-solid reaction. The reaction activation energy exhibited a rising trend as the oxygen vacancies decrease in CO2 splitting stage (CS), where the internal lattice oxygen transfer resistance increases. The lattice oxygen O2- dissociated into chemisorbed oxygen O2-/O-, which was further converted into molecular O2 on the surface of the carrier. Ni2+ from Ni-Fe is preferentially converted to Ni-O in the reduction reaction, and then reduced to Ni0. The Ni/Fe intermetallic synergies were also confirmed by the difference in Ni-Ni and Ni-O electron binding energies of Ni2p. The transfer mechanism for CLG was expressed as: O2-(lattice) - e O2 -/O-(chemical)- e O2(phy)-e O2(g). The lattice oxygen migration displayed an opposite trend for CO2 splitting reaction,where Ni played a catalytic activation role, facilitating the transfer of lattice oxygen rather than participating in the reaction. |
| WOS关键词 | HYDROGEN ; FIXATION |
| 资助项目 | National Natural Science Foundation of China[52276191] ; National Key Research and Development Program of China[2023YFC3905800] ; Guang Dong Basic and Applied Basic Research Foundation[2023B1515120062] ; National Founded Postdoctoral Researcher Program of China[GZC20230856] ; Foundation of State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology[MJNYSKL202310] ; Foundation of State Key Laboratory of Coal Conversion[J24-25-101] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001363015800001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Guang Dong Basic and Applied Basic Research Foundation ; National Founded Postdoctoral Researcher Program of China ; Foundation of State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology ; Foundation of State Key Laboratory of Coal Conversion |
| 源URL | [http://ir.giec.ac.cn/handle/344007/43637]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Yang, Xixian |
| 作者单位 | 1.Hong Kong Polytech Univ, Sch Fash & Text, Kowloon, Hong Kong 999077, Peoples R China 2.South China Agr Univ, Inst Biomass Engn, Key Lab Energy Plants Resource & Utilizat, Guangzhou 510642, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Wuhan Text Univ, Hubei Prov Engn Lab Clean Prod & High Value Utiliz, Wuhan 430200, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Guoqiang,Yao, Yecheng,Wu, Xiaoyan,et al. Reaction kinetics and mechanisms for carbon-negative chemical looping gasification of biomass coupled with CO2 splitting[J]. INDUSTRIAL CROPS AND PRODUCTS,2024,222:10. |
| APA | Wei, Guoqiang.,Yao, Yecheng.,Wu, Xiaoyan.,Yang, Xixian.,Yuan, Haoran.,...&Kang, Zhanxiao.(2024).Reaction kinetics and mechanisms for carbon-negative chemical looping gasification of biomass coupled with CO2 splitting.INDUSTRIAL CROPS AND PRODUCTS,222,10. |
| MLA | Wei, Guoqiang,et al."Reaction kinetics and mechanisms for carbon-negative chemical looping gasification of biomass coupled with CO2 splitting".INDUSTRIAL CROPS AND PRODUCTS 222(2024):10. |
入库方式： OAI收割
来源：广州能源研究所
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