<br>用于从生物质热解挥发物中捕获AAEM的炭基Fe-Ni-Ca材料以及挥发物催化重整中的可回收性,Chemical Engineering Journal

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用于从生物质热解挥发物中捕获AAEM的炭基Fe-Ni-Ca材料以及挥发物催化重整中的可回收性
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2024-01-07 , DOI: 10.1016/j.cej.2024.148620
Qiuxiang Lu , Kai Wu , Zhenting Zha , Yuna Ma , Zefeng Ge , Mingxun Zeng , Shenfu Yuan , Huiyan Zhang

生物质催化热解制氢越来越受到关注，以解决可再生能源的过度消耗。然而，与碱金属和碱土金属（AAEM）相关的大量问题（例如，结渣、腐蚀和换热表面结垢）阻碍了其应用。为了应对这些挑战并提高氢气产量，建议采用炭基 Fe-Ni-Ca 材料从生物质热解挥发物中捕获 AAEM，同时增加氢气产量。炭基材料表现出优异的AAEM捕获能力，废材料中检测到的K、Na和Mg含量分别是新鲜材料的3.4倍、1.4倍和1.5倍。此外，废Fe-Ni-Ca在再生后表现出优异的稳定性，其H2产量与新鲜材料相当，CO产量超过新鲜Fe-Ni-Ca。据报道，炭载体可以吸附挥发物中的AAEM，然后材料中的金属元素(Fe、Ni、Ca)与挥发物中的AAEM发生化学反应，捕获材料中的AAEM并催化重整挥发物。这项工作提供了一种处理挥发物中 AAEM 的新策略。

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Char-based Fe-Ni-Ca material for capturing AAEM from biomass pyrolysis volatiles and recyclability in catalytic reforming of volatiles

Hydrogen production derived from biomass catalytic pyrolysis has received increasing attention, to solve the excessive consumption of renewable energy. However, considerable amounts of the issues (e.g., slag formation, corrosion, and scaling on the heat exchange surface) related to alkali and alkali earth metals (AAEM) have hindered its application. To address these challenges and improve the yield of H2, char-based Fe-Ni-Ca material is proposed to capture AAEM from biomass pyrolysis volatiles while increasing the H2. Char-based materials exhibit excellent AAEM capture ability, with K, Na, and Mg contents detected in spent materials being 3.4 times, 1.4 times, and 1.5 times higher than those in fresh, respectively. Besides, the spent Fe-Ni-Ca exhibits excellent stability after regeneration, with H2 production comparable to that of fresh material, and CO production exceeding that of fresh Fe-Ni-Ca. It was disclosed that the char support can adsorb AAEM in volatiles, and then chemical reactions will occur between metal elements (Fe, Ni, and Ca) in the material and AAEM in the volatiles, trapping AAEM in the material and catalytic reforming volatiles. This work provides a novel strategy to deal with AAEM in volatiles.

更新日期：2024-01-07

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