Supramolecular binding of amines with functional magnesium tetraphenylporphyrin for CO2 capture

Supramolecular binding of amines with functional magnesium tetraphenylporphyrin for CO2 capture
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胺与功能性四苯基卟啉镁的超分子结合用于 CO2 捕获

DOI:
10.1016/j.cclet.2013.01.043
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发表时间:
2013-03
影响因子:
9.1
通讯作者:
Wei, Xiong-Hui
Wei, Xiong-Hui
中科院分区:
化学1区
文献类型:
--
作者:
Zhang, Jian-Bin;Li, Chun-Ping;Huo, Tian-Rui;Wei, Xiong-Hui

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本工作采用四苯基卟啉镁(MgTPP)作为新型超分子胺固定剂。一旦引入,CO2很容易与MgTPP竞争胺,导致MgTPP的释放。MgTPP与胺的缔合常数(Kassoc)值在0.6(乙醇胺)~ 3.9(乙二胺)之间,低于CO2与这些胺的Kassoc值。MgTPP与苯胺、乙醇胺、吡咯烷或乙二胺相互作用形成1:1加合物。乙二胺对MgTPP有较强的Kassoc值,因此被认为是最佳的CO2捕集剂。
In this work, magnesium tetraphenylporphyrin (MgTPP) was used as a new supramolecular amine-fixing agent. Once introduced, CO2easily competes with MgTPP for amines, leading to the release of MgTPP. The processes can be explained by the fact that the association constant (Kassoc) values of MgTPP with amines were in the range of 0.6 (ethanolamine) to 3.9 (ethylenediamine), which are lower than theKassocvalues of CO2with these amines. MgTPP interacted with aniline, ethanolamine, pyrrolidine, or ethylenediamine to form 1:1 adducts. Ethylenediamine presents a strongerKassocvalue for MgTPP, so it was considered an optimal agent for CO2capture.
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