Enhanced Breakthrough Efficiency by a Chemically Stable Porous Coordination Polymer with Optimized Nanochannel

Haifei Cao; Zhiyong Lu; Kim Hyeon-Deuk; I-Ya Chang; Yang Wang; Zhifeng Xin; Jingui Duan; Wanqin Jin

doi:10.1021/acsami.8b12728

Enhanced Breakthrough Efficiency by a Chemically Stable Porous Coordination Polymer with Optimized Nanochannel

ACS Appl Mater Interfaces. 2018 Nov 14;10(45):39025-39031. doi: 10.1021/acsami.8b12728. Epub 2018 Nov 1.

Authors

Haifei Cao¹, Zhiyong Lu², Kim Hyeon-Deuk³, I-Ya Chang³, Yang Wang¹, Zhifeng Xin⁴, Jingui Duan¹, Wanqin Jin¹

Affiliations

¹ State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering , Nanjing Tech University , Nanjing 210009 , China.
² College of Mechanics and Materials , Hohai University , Nanjing 210098 , China.
³ Department of Chemistry , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8502 , Japan.
⁴ Institute of Molecule Engineering & Applied Chemistry , Anhui University of Technology , Maanshan 243002 , China.

PMID: 30347140
DOI: 10.1021/acsami.8b12728

Abstract

High separation efficiency is very important for process of pressure swing adsorption (PSA) in the industry. Herein, we propose a fine design of chemically stable porous coordination polymers (PCPs) with optimized nanochannel by strategy of inserting and shifting shortest alkyl group on T-shaped ligand. Remarkably, the synergistic effect of optimized nanochannel, unique crystal morphology and fitted channel enable sharply enhanced breakthrough efficiency of C₂H_6/4/CH₄, 1.17 or 0.77 g of CH₄ can be separated from corresponding dual mixtures (2/8, v/v) by 1 g of NTU-25 at 273 K, which was further validated and understood by controlled experiments and density functional theory (DFT) computations.

Keywords: breakthrough efficiency; chemically stable porous coordination polymer; inserted/shifted methyl group; methane purification; optimized nanochannel.