The Ag(I) coordination in Ag-MOF-303 enhanced the adsorption and separation capabilities for H2/D2

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-12-20 DOI:10.1016/j.seppur.2024.131219

Zining Wang, Fenglei Wang, Yu Luo, Yiman Liu, Yuanhua Wang, Fan Wang, Yongdong Jin, Chuanqin Xia

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Abstract

As a crucial raw material for nuclear fusion, the efficient separation of deuterium from H₂/D₂ mixture gas is of paramount importance. However, the similar physical and chemical properties of hydrogen isotope gases make this work a significant challenge. In this study, Ag (Ⅰ) ions were coordinated into the metal–organic framework MOF-303 to synthesize Ag-MOF-303 with 5.8 Å pore size for H₂/D₂ separation. The adsorption capacity per unit BET surface area was approximately 50 % higher than that of MOF-303 at 87 K. Combining the experimental results and GCMC calculations, although there was no CAQS between Ag-MOF-303 and H₂/D₂, the affinity between Ag-MOF-303 and H₂/D₂ was enhanced by Ag (I), resulting in an increase in IAST selectivity from 1.62 to 1.93 (77 K). Furthermore, dynamic breakthrough experiments also demonstrated effective separation performance (the penetration selectivity was increased from 1.26 to 1.33), and the H₂/D₂ separation factor was measured to be 6.12 using TDS at 30 K and 1 kPa.

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.