Metal-organic frameworks for highly efficient adsorption of dibenzothiophene from liquid fuels

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• 作者：Weijia Tang ; Jianlei Gu ; Hongliang Huang ; Dahuan Liu and Chongli Zhong
• 刊名：AIChE Journal
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：62
• 期：12
• 页码：4491-4496
• 全文大小：344K
• ISSN：1547-5905

文摘

By taking desulfurization of liquid fuels as a demonstrative example, a bottom-up selection was performed to find the metal-organic frameworks (MOF)-type adsorbents with highly efficient adsorption performance of large molecules. Through carefully analyzing the adsorption mechanism for typical S-heterocyclic compounds like dibenzothiophene (DBT), PCN-10 was selected in consideration of the simultaneous inclusion of several kinds of interactions in the framework. Experimental results demonstrate that this MOF exhibits extraordinary high DBT adsorption capacity (75.24 mg S g⁻¹), showing record uptake among all the reported porous materials for the removal of thiophenicsulfur from fuels (below 1000 ppm_wS), to the best of our knowledge. Moreover, the removal rate for the low sulfur concentration (50 ppm_wS) can reach beyond 99%. This strategy can be conveniently extended to the screening and design of MOFs for the efficient removal of other important large guest molecules.