Highly Selective Capture of the Greenhouse Gas CO2 in Polymers
Highly Selective Capture of the Greenhouse Gas CO2 in Polymers
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DOI：
10.1021/acssuschemeng.5b00544
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发表时间：
2015-11
影响因子：
8.4
通讯作者：
Linbing Sun;Ying Kang;Yao Shi;Yao Jiang;Xiao-Qin Liu
中科院分区：
文献类型：
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作者：
Linbing Sun;Ying Kang;Yao Shi;Yao Jiang;Xiao-Qin Liu
聚合物具有较高的物理化学稳定性和较低的骨架密度，在捕集温室气体CO2方面具有广阔的应用前景。然而，它们的合成通常需要复杂的单体、昂贵的催化剂和/或苛刻的条件，这使得合成过程昂贵、繁琐，很难放大。本文以氯甲苯和各种二胺为原料，发展了一种简便的亲核取代反应来合成聚合物。由于单体具有适当的反应活性，聚合反应在60℃左右的低温下进行，不需要任何催化剂。成功地合成了一系列含有丰富仲胺的聚合物，这些仲胺从选择性捕获二氧化碳和高效再生吸附剂的角度提供了合适的吸附-吸附剂相互作用。此外，该材料具有规整的微孔，其尺寸接近于吸附分子的大小和亚连续的大小。
Owing to their high physicochemical stability and low skeleton density, polymers are highly promising for capturing the greenhouse gas CO2. However, complicated monomers, expensive catalysts, and/or severe conditions are usually required for their synthesis, which makes the process costly, tedious, and hard to scale up. In this paper, a facile nucleophilic substitution reaction is developed to synthesize polymers from low-cost monomers, namely chloromethylbenzene and various diamines. Due to the appropriate reactivity of monomers, the polymerization takes place at a low temperature of about 60 °C in the absence of any catalysts. A series of polymers containing plentiful secondary amines are successfully fabricated; these secondary amines provide a proper adsorbate–adsorbent interaction from the viewpoints of selective capture of CO2 and energy-efficient regeneration of adsorbents. Moreover, the materials possess well-defined micropores with the dimension close to the size of adsorbate molecules and subseq...