南开大学化学学院高分子化学研究所,功能高分子材料教育部重点实验室;
球形碳材料具有表面均匀光滑、机械强度高、耐磨性好等特性，十分适用于柱式操作，近年来在CO_2分离领域表现出广阔的应用前景。多孔碳在高温条件下的吸附量出现明显下降，需要在碳骨架上引入金属位点以增强其对CO_2的吸附结合力。为避免碳化过程中的金属粒子聚集，文章选用天然多糖壳聚糖，利用其能与金属离子形成稳定配位聚合物的特性，在前体中补充交联结构，使其在碳化过程中形成玻璃态结构并最终转化为介孔部分；同时稳定金属粒子以提升多孔碳的吸附性能，并提高多孔碳的强度。所得球形碳单粒压碎强度为4.30 N，粒径为400μm，比表面积为884 m~2/g,N含量为2.27at%，负载有25 nm的Cu纳米颗粒，负载量为1.05at%，常温下对CO_2吸附的选择性系数为39.4，高温下对CO_2的吸附量为1.93 mmol/g。
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基本信息:
DOI：10.16026/j.cnki.iea.2025010064
中图分类号:O647.3;X701
引用信息:
[1]姜海涛,何涛,王春红.用于CO_2吸附的壳聚糖-金属络合物基球形分级介孔N掺杂碳-金属材料的制备[J].离子交换与吸附,2025,41(01):64-72.DOI:10.16026/j.cnki.iea.2025010064.
基金信息: