Pore Distortion in a Metal-Organic Framework for Regulated Separation of Propane and Propylene

Liang Yu, Xue Han, Hao Wang, Saif Ullah, Qibin Xia, Weiyao Li, Jiangnan Li, Ivan Da Silva, Pascal Manuel, Svemir Rudić, Yongqiang Cheng, Sihai Yang, Timo Thonhauser, Jing Li

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

The development of porous solids for adsorptive separation of propylene and propane remains an important and challenging line of research. State-of-the-art sorbent materials often suffer from the trade-off between adsorption capacity and selectivity. Here, we report the regulated separation of propylene and propane in a metal-organic framework via designed pore distortion. The distorted pore structure of HIAM-301 successfully excludes propane and thus achieved simultaneously high selectivity (>150) and large capacity (∼3.2 mmol/g) of propylene at 298 K and 1 bar. Dynamic breakthrough measurements validated the excellent separation of propane and propylene. In situ neutron powder diffraction and inelastic neutron scattering revealed the binding domains of adsorbed propylene molecules in HIAM-301 as well as host-guest interaction dynamics. This study presents a new benchmark for the adsorptive separation of propylene and propane.

Original languageEnglish (US)
Pages (from-to)19300-19305
Number of pages6
JournalJournal of the American Chemical Society
Volume143
Issue number46
DOIs
StatePublished - Nov 24 2021

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry

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