A facile one-pot preparation of porphyrin-based microporous organic polymers for adsorption of carbon dioxide, ethane, and methane. (3rd October 2022)

• Record Type: Journal Article
• Authors: Yan, Jun; Liu, Zhenghua; Sun, Haiyu; Tong, Sihan; Guo, Shengwei
• Is Part Of: New journal of chemistry. Volume 46:Number 40(2022)
• Page Start: 19401
• Page End: 19406
• Publication Date: 2022-10-03
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj03749a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Achieving a cost-effective preparation of 3D porphyrin-based microporous organic polymers (PMOPs) for the adsorption and separation of carbon dioxide (CO2 ), ethane (C2 H6 ), and methane (CH4 ) remains difficult. Abstract : Achieving a cost-effective preparation of 3D porphyrin-based microporous organic polymers (PMOPs) for the adsorption and separation of carbon dioxide (CO2 ), ethane (C2 H6 ), and methane (CH4 ) remains difficult. In this study, two 3D PMOP networks that originated from triphenylphosphine and tetraphenylsilane units for CO2, C2 H6, and CH4 adsorption/separation, PMOP-P and PMOP-Si, were successfully fabricated by a facile one-pot method using tri(4-formylphenyl)phosphine (TFPP) and tetrakis(4-aldehydephenyl)silane (TFPSi) with inexpensive pyrrole, respectively. The as-prepared PMOPs consisted of roughly spherical particles with specific surface areas between 645 and 814 m 2 g −1 and pore sizes smaller than 2 nm. In addition, the PMOPs showed medium CO2, C2 H6, and CH4 gas adsorption performances. Compared with PMOP-P, PMOP-Si the tetraphenylsilane moiety displayed higher microporosity. It also exhibited CO2, C2 H6, and CH4 gas uptakes of up to 138.9, 71.0, and 14.7 mg g −1, respectively, at 273 K and 1 bar. The 138.9 mg g −1 CO2 uptake exceeded those of previously reported PMOP materials. Moreover, the as-prepared PMOP-P containing triphenylphosphine units possessed a smaller pore size than PMOP-Si and exhibited C2 H6 /CH4 and CO2 /CH4 selectivities as high as 24.3 and 10.9 at 273 K, respectively, derived from the initial slope method. The results are helpful for the future design and construction of microporous organic polymers originating from triphenylphosphine and tetraphenylsilane units for simple gas adsorption and separation.