Maffei A Verena, Budd Peter M, McKeown Neil B
Organic Materials Innovation Centre, School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Langmuir. 2006 Apr 25;22(9):4225-9. doi: 10.1021/la060091z.
The adsorption/desorption of N2 at 77 K and the adsorption from aqueous solution at 298 K of four organic probe molecules of different sizes (phenol, 4-nitrophenol, orange II, naphthol green B) were studied for a phthalocyanine network polymer of intrinsic microporosity (PIM) and for an activated carbon (Darco 20-40 mesh). N2 sorption analysis gave similar surface areas for the PIM and the carbon (610 and 545 m2 g(-1), respectively) but showed differences in pore size distribution, the PIM being essentially microporous (pore size < 2 nm), with a high proportion of ultramicropores (<0.7 nm), while the carbon had a broader pore size distribution, extending into the mesopore region. The carbon acted as an adsorbent for all the organic probe molecules studied, while the PIM was more selective, adsorbing the smaller molecules but rejecting the large dye naphthol green B. The PIM offers selectivity combined with a well-defined chemical structure incorporating catalytic sites.
研究了具有固有微孔性的酞菁网络聚合物（PIM）和活性炭（Darco 20 - 40目）在77 K下对N₂的吸附/解吸以及在298 K下对四种不同尺寸有机探针分子（苯酚、4 - 硝基苯酚、橙黄II、萘酚绿B）的水溶液吸附情况。N₂吸附分析表明，PIM和活性炭的比表面积相近（分别为610和545 m² g⁻¹），但孔径分布存在差异，PIM基本为微孔（孔径<2 nm），超微孔（<0.7 nm）比例较高，而活性炭的孔径分布更宽，延伸至中孔区域。活性炭对所有研究的有机探针分子都有吸附作用，而PIM更具选择性，吸附较小分子但排斥大染料萘酚绿B。PIM兼具选择性以及包含催化位点的明确化学结构。
