文献类型：期刊文献

英文题名：A review of the effects of alkali and alkaline earth metal species on biomass gasification

作者：Yu, Junqin[1];Guo, Qinghua[1];Gong, Yan[1];Ding, Lu[1,2];Wang, Jiajian[1];Yu, Guangsuo[1,3]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gre, Yinchuan 750021, Ningxia, Peoples R China

年份：2021

卷号：214

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20210409812348);WOS:【SCI-EXPANDED(收录号:WOS:000617781500001)】；

基金：This work was supported by National Natural Science Foundation of China (21878093), Belt & Road Young Scientist Exchange Project Supported by Fund of Shanghai Science and Technology Committee (20230742400) and Pujiang Talent Program Supported by Fund of Shanghai Science and Technology Committee (20PJ1402800).

语种：英文

外文关键词：Biomass gasification; Alkali and alkaline earth metals; Catalytic mechanism; Product distribution; Char-ash; slag transition

摘要：The effects of alkali and alkaline earth metals (AAEM) on the component and distribution of products, gasification reactivity, catalytic mechanism and char-ash/slag transition during biomass gasification were reviewed. Biomass is mainly composed of cellulose, hemicellulose and lignin, and has a much higher AAEM species content than coal. The influence of inherent AAEM on biomass gasification is closely related to the gasification agent and operating conditions. To remove tar and reduce soot, interest has grown on the subject of AAEM catalysis for biomass gasification. Therefore, component and distribution of products and gasification reactivity in inherent and loaded AAEM catalytic biomass gasification were reviewed. Furthermore, the effects of AAEM on biomass conversion can be divided into homogeneous and heterogeneous catalytic effects based on the phase states involved in chemical reactions. Three main mechanisms including oxygen transfer mechanism, active site mechanism and catalytic desorption mechanism are summarized to understand the heterogeneous catalytic process. The attribution to the promotion of the homogeneous reaction is concluded as the volatile gaseous AAEM catalyzed the water-gas shift reaction and the hydrocarbon reforming reaction. In addition, the effects of AAEM content on char-ash/slag transition in biomass gasification were also reviewed.