Meng Qing Bo, Weber Jens
Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Science Park Golm, 14424 Potsdam (Germany); Present address: College of Chemistry, Liaoning University, Shenyang 110036 (PR China).
ChemSusChem. 2014 Dec;7(12):3312-8. doi: 10.1002/cssc.201402879. Epub 2014 Oct 29.
Suitable solid adsorbents are demanded for carbon capture and storage (CCS) processes. In this work, a novel microporous polymer is developed by hypercrosslinking of organosolv lignin, which is a renewable resource. Reaction with formaldehyde dimethyl acetal (FDA) via Friedel-Crafts reaction gives microporous networks, with moderate capacity of carbon dioxide but excellent selectivity towards CO2 /N2 mixture as predicted on the basis of ideal adsorption-solution theory (IAST). Pyrolysis of pure organosolv lignin results in microporous carbon powders, while pyrolysis of hypercrosslinked organosolv lignin yields shape-persistent materials with increased CO2 capacity while maintaining very good selectivity.
碳捕获与封存（CCS）过程需要合适的固体吸附剂。在这项工作中，通过对有机溶剂木质素（一种可再生资源）进行超交联，开发出了一种新型微孔聚合物。通过傅-克反应与甲醛二甲醇缩醛（FDA）反应生成微孔网络，其二氧化碳吸附量适中，但根据理想吸附溶液理论（IAST）预测，对CO₂/N₂混合物具有优异的选择性。纯有机溶剂木质素热解生成微孔碳粉，而超交联有机溶剂木质素热解产生形状持久的材料，其二氧化碳吸附量增加，同时保持非常好的选择性。
