Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 120, Issue 1, Pages 407-415Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b10578
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Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Korea government (MSIP) [2013R1A2A2A01007176]
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Adsorptive denitrogenation (ADN) was carried out by adsorption of indole (IND) and quinoline (QUI) over metal-organic frameworks (MOFs) including acidic UiO-66-SO3H for the first time. The adsorbed amount of IND increased with increasing content of -SO3H in UiO-66. The favorable effect of the -SO3H group on the adsorptive removal of IND could be explained by hydrogen bonding between the O of -SO3H and the H of IND, which was firmly supported by the adsorption of pyrrole and methylpyrrole and by theoretical calculations. The application of an -SO3H group in the adsorptive removal of neutral IND is meaningful since neutral nitrogen-containing compounds are not easy to remove and since UiO-66-SO3H is reusable after simple washing with ethanol. The expected increase in QUI adsorption (due to acid-base interaction) with acidic -SO3H was observed when QUI was present at low concentrations (
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