Leveraging Surface Polarity in a Cost‐Effective Metal–Organic Framework for Olefin Purification From Methanol‐to‐Olefin Products DOI Open Access

Gang‐Ding Wang,

Yong‐Zhi Li,

Heng Zeng

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Abstract Research over the years has revealed immense potential of metal–organic frameworks (MOFs) for purifying olefins such as ethylene (C 2 H 4 ) and propylene 3 6 ). However, many these MOFs face challenges in terms economic viability, particularly production scalability, long‐term stability, process capability. In this study, we present a low‐cost easily scalable synthesis robust MOF material (JNU‐74a), featuring balanced surface polarity that allows one‐step C purification from methanol‐to‐olefin (MTO) products. By incorporating highly electronegative atoms on nonpolar surface, JNU‐74a exhibits substantially larger absorption capacity stronger binding affinity ethane compared to , evidenced by their gas adsorption isotherms heats measurements. In‐depth analyses through situ single‐crystal X‐ray diffraction (SCXRD) gas@JNU‐74a unveil multiple supramolecular bindings favor confirming preferential . Breakthrough experiments demonstrate can efficiently produce polymer‐grade (≥99.95%) (≥99.5%) /C mixtures different ratios single adsorption‐desorption cycle. With its impressive separation capability, high chemical cost‐effective production, holds promise olefin MTO products other challenging industrial separations.

Язык: Английский

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

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

Процитировано

0
Leveraging Surface Polarity in a Cost‐Effective Metal–Organic Framework for Olefin Purification From Methanol‐to‐Olefin Products DOI Open Access

Gang‐Ding Wang,

Yong‐Zhi Li,

Heng Zeng

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Abstract Research over the years has revealed immense potential of metal–organic frameworks (MOFs) for purifying olefins such as ethylene (C 2 H 4 ) and propylene 3 6 ). However, many these MOFs face challenges in terms economic viability, particularly production scalability, long‐term stability, process capability. In this study, we present a low‐cost easily scalable synthesis robust MOF material (JNU‐74a), featuring balanced surface polarity that allows one‐step C purification from methanol‐to‐olefin (MTO) products. By incorporating highly electronegative atoms on nonpolar surface, JNU‐74a exhibits substantially larger absorption capacity stronger binding affinity ethane compared to , evidenced by their gas adsorption isotherms heats measurements. In‐depth analyses through situ single‐crystal X‐ray diffraction (SCXRD) gas@JNU‐74a unveil multiple supramolecular bindings favor confirming preferential . Breakthrough experiments demonstrate can efficiently produce polymer‐grade (≥99.95%) (≥99.5%) /C mixtures different ratios single adsorption‐desorption cycle. With its impressive separation capability, high chemical cost‐effective production, holds promise olefin MTO products other challenging industrial separations.

Язык: Английский

Процитировано

0