Porous liquid metal-organic frameworks with selectively high gas solubility

Jie Ma, Libo He, Ruilu Yang, Dechao Wang, Danyao Qu, Chen Su, Haili Pang, Weiwei Wu, Peipei Li, Lu Zhang, Xiaowei Liu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Porous liquid metal–organic frameworks (MOFs) have recently been discovered rather promising for gas absorption and separation in practical chemical industry processes. In this work, we successfully fabricated a kind of MOF-based porous liquid (i.e., UIO-66-PL) by dispersing the hydrophilic porous filler of UIO-66-NH2 nanoparticles into a specific hydrophilic ionic liquid (IL, [HEMIM][DCA]) through the wet-impregnation method. The obtained UIO-66-PL was a kind of stable porous liquid with well-maintained permanent porosity and liquid-like behavior at room temperature. More importantly, this UIO-66-PL has larger gas absorption capacities than its reference IL hindered solvent as the well-preserved permanent porosity could act as free void space for gas accommodation. Also, IL could serve as a selective gate for target gas to the permanent porosity within UIO-66-PL, i.e., the majority of the permanent porosity in UIO-66-PL is inaccessible to nitrogen, but available for carbon dioxide, demonstrating that this UIO-66-PL could function as a type of fluid selective gas sorbent with high target gas solubility.
Original languageEnglish (US)
Pages (from-to)128051
JournalFuel
Volume344
DOIs
StatePublished - Mar 8 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-03-21
Acknowledgements: This work was financially supported by the National Natural Science Foundation of China (No. 22005233 and No. 61904134), Excellent Youth Exchange Program of China Association for Science and Technology (No. 2020ZZZRB265023), Fundamental Research Funds for the Central Universities (No.JB211412) and China Postdoctoral Science Foundation (No. 2022M710609). We also acknowledged the Instrumental Analysis Center of Xidian University for providing testing equipment.

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Organic Chemistry
  • General Chemical Engineering
  • Fuel Technology

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