ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

A microporous metal–organic framework with soc topology for adsorption and separation selectivity of C₂H₂/CO₂

Xing Duan, Wei Zheng, Ben Yu, and Zhenguo Ji

Hangzhou Dianzi University, Hangzhou, China

E-mail: star1987@hdu.edu.cn

Abstract: The microporous metal–organic framework [Co₃O(H₂O)₃](ABTC)_1.5·(solv)_x, (H₄ABTC = 3,3′,5,5′-azobenzenetetracarboxylic acid) Co-ABTC, with suitable pore space was synthesized by solvothermal reaction. Co-ABTC shows the spherical pores with a radius of 5.2 × 5.2 Å², taking into account the van der Waals’ force. The specific surface area (BET) is 585.9 m²/g through N₂ adsorption at 77 K. The activated Co-ABTCa shows the moderately high separation selectivity for C₂H₂/CO₂ of 4.28 (298 K) at extremely low pressures by utilizing ideal adsorbed solution theory simulation. A new microporous metal–organic framework with optimizing pore space has been realized to exhibit highly selective C₂H₂/CO₂ gas separation property.

Keywords: Metal–organic frameworks ; Adsorption ; Crystal structure ; Selective separation 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00794-x

Chemical Papers 73 (9) 2371–2375 (2019)