通过 [Cu(bpy-n) 2(SiF6) ] (bpy-1 = 4,4'-二氨酸; bpy-2 = 1,2-bis(4-氨酸) 进行高度选择性的二氧化碳吸收
Stephen D Burd1, Shengqian Ma, Jason A Perman
1Department of Chemistry, CHE205, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, USA.
Journal of the American Chemical Society
|February 10, 2012
概括
这项研究表明,多孔协调聚合物 (PCP) 对二氧化碳 (CO2) 与甲 (CH4) 具有很高的选择性. 这种材料可以在没有开放的金属位点的情况下实现出色的二氧化碳捕获,为气体分离提供了一种新的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 孔隙协调聚合物 (PCP) 在气体分离应用中受到研究.
- PCP的选择性通常与开放的金属位点的存在有关.
研究的目的:
- 为了评估已知PCP的气体选择性, [Cu ((bpy-n) ((2) ((SiF ((6))) ],对于CO2,CH4,N2和H2O.
- 为了确定缺乏开放金属位点的PCP是否可以实现高的CO2/CH4选择性.
主要方法:
- 气体吸附测量在298K和1 atm时进行.
- 合成和测试了两个相关的PCP,[Cu(bpy-1) ((2) ((SiF ((6)) ]和[Cu(bpy-2) ((2) ((SiF ((6)) ],进行了测试.
主要成果:
- [Cu ((bpy-1) ((2) ((SiF ((6))) ]在没有开放金属位点的PCP中,在298K和1 atm时显示出最高的CO2吸收率.
- 这种PCP的相对CO2/CH4吸收率约为10.5:1,这是缺乏开放金属位点的化合物的记录.
- [Cu ((bpy-2) ((2) ((SiF ((6))) ]也显示出高的CO2/CH4选择性 (大约. 8:1) 尽管毛孔更大.
结论:
- 没有开放金属位点的多孔协调聚合物可以实现显著的CO2/CH4选择性.
- 研究的PCP为选择性二氧化碳捕获和分离提供了一个有希望的平台.
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