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Citation: CHAEMCHUEN Somboon, ZHOU Kui, YAO Chen, LUO Zhixiong, VERPOORT Francis. Alkali-Metal Tuning of Adsorption Sites in Metal Organic Frameworks MOF-5 for Carbon Dioxide/Methane Separation at Ambient Conditions[J]. Chinese Journal of Applied Chemistry, ;2015, 32(5): 552-556. doi: 10.11944/j.issn.1000-0518.2015.05.140311 shu

Alkali-Metal Tuning of Adsorption Sites in Metal Organic Frameworks MOF-5 for Carbon Dioxide/Methane Separation at Ambient Conditions

1.
a Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
2.
b Center for Chemical and Ma~terial Engineering, Wuhan University of Technology, Wuhan 430070, China

Received Date: 9 September 2014
Available Online: 8 January 2015
Fund Project: 国家千人计划基金(G.0081.10N)资助项目 (G.0081.10N)

Alkali-metal modified metal organic frameworks MOF-5(denoted by M-MOF-5,M=Li,Na,K,Mg) were prepared by ‘one-step’ synthesis.The theoretical calculation(IAST,ideal adsorbed solution theory)was performed to compare the adsorption selectivity of materials.It is found that alkali-metal incorporated MOF-5 can reduce the interpenetration level of MOF-5 framework.The experiment results also show that M-MOF-5 can significantly improve the CO₂/CH₄ adsorption selectivity compared to MOF-5(3.79),especially Li-MOF-5(7.39) at ambient conditions.Furthermore,the CO₂ capacity of Li-MOF-5 is also enhanced.
- metal organic frameworks MOF-5,
- carbon dioxide/methane selectivity,
- alkali-metal,
- interpenetration
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