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A robust indium-organic framework with open tubular channels for efficient separation of acetylene.
- Source :
- Nano Research; Apr2024, Vol. 17 Issue 4, p3139-3146, 8p
- Publication Year :
- 2024
-
Abstract
- Considering the tremendous applications and purification requirement of acetylene (C<subscript>2</subscript>H<subscript>2</subscript>), seeking appropriate adsorbents with high capacity and selectivity is a vital task and remains an enduring challenge. Herein, we designed and synthesized a robust three-dimensional (3D) indium-organic framework ([(Me)<subscript>2</subscript>NH<subscript>2</subscript>][In(L<subscript>6</subscript>)<subscript>0.5</subscript>(IPA)<subscript>0.5</subscript>] dimethylammonium (DMA)2H<subscript>2</subscript>O (In-L<subscript>6</subscript>-IPA)) featuring two types of one-dimensional (1D) tubular channels. The activated In-L<subscript>6</subscript>-IPA displayed high loading for C<subscript>2</subscript>H<subscript>2</subscript> (104.4 cm<superscript>3</superscript>·g<superscript>−1</superscript>, the second highest value among all reported indium-based metal-organic frameworks (MOFs)) and simultaneously selective adsorption for C<subscript>2</subscript>H<subscript>2</subscript> over CO<subscript>2</subscript>, C<subscript>2</subscript>H<subscript>6</subscript>, and ethylene (C<subscript>2</subscript>H<subscript>4</subscript>) at 298 K under 100 kPa. Molecular modelling revealed that the porous wall of In-L<subscript>6</subscript>-IPA provides more and stronger multiple interactions for C<subscript>2</subscript>H<subscript>2</subscript> than CO<subscript>2</subscript>, C<subscript>2</subscript>H<subscript>6</subscript>, and C<subscript>2</subscript>H<subscript>4</subscript> containing C–H⋯π, C–H⋯O, and O⋯π interactions. Breakthrough experiments validated the actual separation ability for various ratios of binary C<subscript>2</subscript>H<subscript>2</subscript>/C<subscript>2</subscript>H<subscript>4</subscript> and C<subscript>2</subscript>H<subscript>2</subscript>/CO<subscript>2</subscript> mixtures as well as equimolar ternary C<subscript>2</subscript>H<subscript>2</subscript>/C<subscript>2</subscript>H<subscript>4</subscript>/CO<subscript>2</subscript> and C<subscript>2</subscript>H<subscript>2</subscript>/C<subscript>2</subscript>H<subscript>4</subscript>/C<subscript>2</subscript>H<subscript>6</subscript> mixtures with excellent reusability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 19980124
- Volume :
- 17
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Nano Research
- Publication Type :
- Academic Journal
- Accession number :
- 176080569
- Full Text :
- https://doi.org/10.1007/s12274-023-6061-8