Abstract
Benzimidazole-linked polymers (BILPs) are emerging candidates for gas storage and separation applications; however, their current synthetic methods offer limited control over textural properties which are vital for their multifaceted use. In this study, we investigate the impact of acid-catalyzed formation rates of the imidazole units on the porosity levels of BILPs and subsequent effects on CO2 and CH4 binding affinities and selective uptake of CO2 over CH4 and N2. Treatment of 3,3'-Diaminobenzidine tetrahydrochloride hydrate with 1,2,4,5-tetrakis(4-formylphenyl)benzene and 1,3,5-(4-formylphenyl)-benzene in anhydrous DMF afforded porous BILP-15 (448 m(2) g(-1)) and BILP-16 (435 m(2) g(-1)), respectively. Alternatively, the same polymers were prepared from the neutral 3,3'-Diaminobenzidine and catalytic amounts of aqueous HCl. The resulting polymers denoted BILP-15(AC) and BILP-16(AC) exhibited optimal surface areas; 862 m(2) g(-1) and 643 m(2) g(-1), respectively, only when 2 equiv of HCl (0.22 M) was used. In contrast, the CO2 binding affinity (Qst) dropped from 33.0 to 28.9 kJ mol(-1) for BILP-15 and from 32.0 to 31.6 kJ mol(-1) for BILP-16. According to initial slope calculations at 273 K/298 K, a notable change in CO2/N2 s...Continue Reading
References
Mar 14, 2009·Journal of the American Chemical Society·Fernando J Uribe-RomoOmar M Yaghi
Nov 10, 2009·ChemSusChem·Jens Weber
Jul 3, 2010·Science·Hiroyasu FurukawaOmar M Yaghi
Oct 27, 2011·Journal of the American Chemical Society·San-Yuan DingWei Wang
Jul 24, 2012·Chemical Society Reviews·Xiao FengDonglin Jiang
Aug 22, 2012·Journal of the American Chemical Society·Omar K FarhaJoseph T Hupp
Oct 13, 2012·Chemical Society Reviews·San-Yuan Ding, Wei Wang
Nov 17, 2012·Journal of the American Chemical Society·Sharath KandambethRahul Banerjee
Feb 7, 2013·Chemistry : a European Journal·Mohammad Gulam RabbaniHani M El-Kaderi
Mar 1, 2013·Nature·Patrick NugentMichael J Zaworotko
Mar 20, 2013·Chemical Communications : Chem Comm·Xiaoqin ZouGuangshan Zhu
May 22, 2013·Environmental Science & Technology·Bin YuanShuguang Deng
May 23, 2013·Nature Chemistry·John W Colson, William R Dichtel
Jan 11, 2014·Chemical Communications : Chem Comm·Guiyang LiZhonggang Wang
Feb 26, 2014·Chemical Communications : Chem Comm·Suha AltarawnehHani M El-Kaderi
May 16, 2014·Chemical Communications : Chem Comm·Xiang ZhuSheng Dai
Citations
Apr 16, 2016·Environmental Science & Technology·Keke WangChongli Zhong
May 27, 2016·ACS Applied Materials & Interfaces·Timur IslamogluHani M El-Kaderi
Jul 26, 2017·Advanced Materials·Lanfang ZouHong-Cai Zhou
Aug 15, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Christoph KlumpenJürgen Senker
May 26, 2016·Chemical Communications : Chem Comm·Bidhan C PatraAsim Bhaumik
Oct 11, 2016·Chemical Communications : Chem Comm·Ali K SekizkardesDavid Hopkinson
Nov 12, 2019·ChemSusChem·Caiyan CuiRuihu Wang
Dec 29, 2020·Journal of Colloid and Interface Science·Yafei SangYou-Nian Liu