Two novel [CuxIy]n-based MOFs with high BET surface area for efficient MTO products separation

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-04-01 DOI:10.1016/j.seppur.2025.132796

Xueyue Yu, Baobing Tang, Zhaohui Shi, Zhiwei Liu, Xu Liu, Lirong Zhang, Yunling Liu

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引用次数: 0

Abstract

Here, by utilizing mixed molecular building block strategy, two novel [Cu_xI_y]_n-based MOFs materials, JLU-MOF205 and JLU-MOF206 were successfully constructed by employing HPYBZ (HPYBZ = 4-(4-pyridyl) benzoic acid) and HPYA (HPYA = 3-(4-pyridyl) acrylic acid) organic ligands. Both MOFs possess typical [Cu_xI_y] clusters and copper paddlewheel building units, JLU-MOF205 exhibits a unique 2D + 2D → 3D perpendicular polycatenated framework. JLU-MOF206 presents better structural stability compared to JLU-MOF205, which resulted in improving water stability, high Brunauer-Emmett-Teller (BET) surface area and extra open metal sites. Additionally, both [Cu_xI_y]_n-based MOFs demonstrate superior adsorption of C₃H₆ over C₂H₄, thereby achieving excellent C₃H₆/C₂H₄ selectivity. Breakthrough experiments confirmed their outstanding performance in separating C₃H₆/C₂H₄ binary mixtures, enabling the one-step purification of C₂H₄ and the recovery of C₃H₆. JLU-MOF205 samples can extract 43.65, 64.70, and 172.23 L kg⁻¹ of high-purity (99.9 %) C₂H₄ from C₃H₆/C₂H₄ mixtures in different ratios (50/50, 20/50, and 10/90), respectively. For JLU-MOF206, it is also possible to extract 113.53, 230.79, and 501.28 L kg⁻¹ of high-purity (99.9 %) C₂H₄, respectively. Moreover, their excellent separation selectivity and high reusability surpass many known MOFs materials, making them ideal candidate adsorbents for industrial separation applications.

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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.