基于七嗪多孔骨架选择性吸附CO_2及有机催化性能研究
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- 英文论文题名：Heptazine-based porous framework for selective CO_2 sorption and organocatalytic performances
- 论文作者：杜志丽 ; 党琴琴 ; 张献明
- 英文论文作者：Zhi-li Du ; Qin-Qin Dang ; Xian-Ming Zhang ; School of Chemistry & Materials Science ; Shanxi Normal University
- 年：2016
- 作者机构：山西师范大学;
- 论文关键词：七嗪 ; 多孔有机材料 ; 气体吸附 ; 催化
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：O647.3;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：128k
- 原文格式：D
- 会议级别：全国
摘要
我们选用三氯七嗪和线性的二元仲胺无水哌嗪在温和、无催化剂的条件下直接偶联制备了新型的七嗪基多孔有机骨架(Cy-pip)。七嗪环和哌嗪的引入为骨架提供了大量的N供体位点,从而有利于CO_2的吸附。Cy-pip具有良好的CO_2的储存量(103.4 mg/g,9.4wt%,273 K/1 bar)。此外,Cy-pip骨架内表面有大量的路易斯碱位点,使得Cy-pip对含活泼亚甲基化合物和芳香醛、杂环醛及环酮参与反应的克脑文盖尔反应有很好的催化活性。
In this work we report the design and synthesis of a heptazine-based polymer networks(Cy-pip),which can be synthesized by catalyst-free direct coupling of cyameluric chloride(Cy) and piperazine(Pip).Presence of heptazine and piperazine functionality within the network enables grafting of basic N-sites at the pore surface and thus favoring the adsorption of CO_2 uptake over other gases such as N_2 and H_2.Cy-pip showed good CO_2 storage capacity(103.4 mg/g,9.4wt%at 1 bar/273 K).Furthermore,for the first time Cy-pip with a high concentration of Lewis basic nitrogen sites on its internal surfaces has been exploited for their heterogeneous catalytic performance in the Knoevenagel condensation reaction between active methylene compounds and aromatics,heterocyclic aldehydes,and cyclic ketones.
In this work we report the design and synthesis of a heptazine-based polymer networks(Cy-pip),which can be synthesized by catalyst-free direct coupling of cyameluric chloride(Cy) and piperazine(Pip).Presence of heptazine and piperazine functionality within the network enables grafting of basic N-sites at the pore surface and thus favoring the adsorption of CO_2 uptake over other gases such as N_2 and H_2.Cy-pip showed good CO_2 storage capacity(103.4 mg/g,9.4wt%at 1 bar/273 K).Furthermore,for the first time Cy-pip with a high concentration of Lewis basic nitrogen sites on its internal surfaces has been exploited for their heterogeneous catalytic performance in the Knoevenagel condensation reaction between active methylene compounds and aromatics,heterocyclic aldehydes,and cyclic ketones.
引文
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[2]Cote,A.P.;Benin,A.I.;Yaghi,O.M.Science 2005,31:01166.
[3]Zhang,Y.;Li,Z.;Xia,H.Chem.Commun.2014,50:8495.
[4]Meng,S.;Ma,H.P.;Zhu,G.S.J.Mater.Chem.A 2014,2:14536