Maximizing the Density of π‐Electron in Metal‐Organic Frameworks for Benchmark Paraffin Separation DOI Open Access
Yanying Liu, Jiawen Wang, Shixian Fan

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Abstract Selective paraffin adsorption is crucial in chemical processes but faces significant challenges. Herein a promising strategy by maximizing the density of π‐electron (D π defined to be Number (π‐electron) /Volume (single pore) ) metal‐organic framewok (MOF) pore proposed boost separation. SNNU‐126 features triangular prismatic with highest D value 0.2070 e Å −3 selected and rationally regulated incorporating amino electron‐donating groups (EDGs) demonstrate feasibility this strategy. As expected, extraordinary together multiple EDGs endow SNNU‐126‐129 top‐level capacity, exceptional IAST selectivity, excellent separation ability as well productivity. Specially, SNNU‐129 nine demonstrates longest breakthrough interval times for C 2 H 6 /CH 4 (205 min g −1 3 8 (710 from ternary gas mixture one‐step CH productivity 15.56 mmol (purity > 99.5%) at 298 K 1 bar, which surpass values all current adsorbents set benchmark In situ infrared spectra DFT simulations clearly verify that MOF effectively enlarges C─H···π interactions, widens affinity gap, results performance.

Language: Английский

Self-Assembled Sandwich-like Mixed Matrix Membrane of Defective Zr-MOF for Efficient Gas Separation DOI Creative Commons
Yuning Li, Xinya Wang, Weiqiu Huang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(4), P. 279 - 279

Published: Feb. 12, 2025

Membrane technology has been widely used in industrial CO2 capturing, gas purification and separation, arousing attention due to its advantages of high efficiency, energy saving environmental protection. In the context reducing global carbon emissions combating climate change, it is particularly important capture separate greenhouse gasses such as CO2. Zr-MOF can be a multi-dimensional modification on polymer membrane prepare self-assembled MOF-based mixed matrix membranes (MMMs), aiming at problem weak adhesion or bonding force between separation layer porous carrier. When defective UiO-66 applied PVDF functional layer, performance significantly improved. TUT-UiO-3-TTN@PVDF permeation flux 14,294 GPU selectivity 27 for CO2/N2 18 CO2/CH4, respectively. The permeability exhibited change after 40 h continuous operation, improving showing exceptional stability large-scale applications.

Language: Английский

Citations

0
Maximizing the Density of π‐Electron in Metal‐Organic Frameworks for Benchmark Paraffin Separation DOI Open Access
Yanying Liu, Jiawen Wang, Shixian Fan

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 24, 2025

Abstract Selective paraffin adsorption is crucial in chemical processes but faces significant challenges. Herein a promising strategy by maximizing the density of π‐electron (D π defined to be Number (π‐electron) /Volume (single pore) ) metal‐organic framewok (MOF) pore proposed boost separation. SNNU‐126 features triangular prismatic with highest D value 0.2070 e Å −3 selected and rationally regulated incorporating amino electron‐donating groups (EDGs) demonstrate feasibility this strategy. As expected, extraordinary together multiple EDGs endow SNNU‐126‐129 top‐level capacity, exceptional IAST selectivity, excellent separation ability as well productivity. Specially, SNNU‐129 nine demonstrates longest breakthrough interval times for C 2 H 6 /CH 4 (205 min g −1 3 8 (710 from ternary gas mixture one‐step CH productivity 15.56 mmol (purity > 99.5%) at 298 K 1 bar, which surpass values all current adsorbents set benchmark In situ infrared spectra DFT simulations clearly verify that MOF effectively enlarges C─H···π interactions, widens affinity gap, results performance.

Language: Английский

Citations

0