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Gram-Scale Synthesis of an Ultrastable Microporous Metal-Organic Framework for Efficient Adsorptive Separation of C2H2/CO2 and C2H2/CH4.

ABSTRACT: A highly water and thermally stable metal-organic framework (MOF) Zn2(Pydc)(Ata)2 (1, H2Pydc = 3,5-pyridinedicarboxylic acid; HAta = 3-amino-1,2,4-triazole) was synthesized on a large scale using inexpensive commercially available ligands for efficient separation of C2H2 from CH4 and CO2. Compound 1 could take up 47.2 mL/g of C2H2 under ambient conditions but only 33.0 mL/g of CO2 and 19.1 mL/g of CH4. The calculated ideal absorbed solution theory (IAST) selectivities for equimolar C2H2/CO2 and C2H2/CH4 were 5.1 and 21.5, respectively, comparable to those many popular MOFs. The Qst values for C2H2, CO2, and CH4 at a near-zero loading in 1 were 43.1, 32.1, and 22.5 kJ mol-1, respectively. The practical separation performance for C2H2/CO2 mixtures was further confirmed by column breakthrough experiments.

SUBMITTER: Xu N 

PROVIDER: S-EPMC8433756 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature

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Gram-Scale Synthesis of an Ultrastable Microporous Metal-Organic Framework for Efficient Adsorptive Separation of C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> and C<sub>2</sub>H<sub>2</sub>/CH<sub>4</sub>.

Xu Nuo N   Jiang Yunjia Y   Sun Wanqi W   Li Jiahao J   Wang Lingyao L   Jin Yujie Y   Zhang Yuanbin Y   Wang Dongmei D   Duttwyler Simon S  

Molecules (Basel, Switzerland) 20210824 17

A highly water and thermally stable metal-organic framework (MOF) Zn<sub>2</sub>(Pydc)(Ata)<sub>2</sub> (<b>1</b>, H<sub>2</sub>Pydc = 3,5-pyridinedicarboxylic acid; HAta = 3-amino-1,2,4-triazole) was synthesized on a large scale using inexpensive commercially available ligands for efficient separation of C<sub>2</sub>H<sub>2</sub> from CH<sub>4</sub> and CO<sub>2</sub>. Compound <b>1</b> could take up 47.2 mL/g of C<sub>2</sub>H<sub>2</sub> under ambient conditions but only 33.0 mL/g of CO<sub>  ...[more]

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