Oxidative modification of metal-organic framework-derived carbon: An effective strategy for adsorptive elimination of carbazole and benzonitrile

초록

The elimination of nitrogen-containing compounds (NCCs), such as carbazole (CARB) and benzonitrile (BENZ), from fuels is essential before use. In this study, an efficient adsorbent was prepared through oxidative modification of metal-organic framework (MOF)-derived carbon to effectively remove NCCs from fuel. The prepared adsorbent, oxidized MOF-derived carbon (OMDC), showed noticeable performance in removing NCCs from model fuel. OMDC showed 4-and 26-times the adsorption capacity for the removal of CARB and BENZ, respectively, compared with that of activated carbon. Moreover, OMDC showed the highest adsorption capacity for CARB and BENZ removal compared with any adsorbent reported thus far. The adsorption process could be explained by hydrogen bonding based on the presence of many hydrogen donor and acceptor sites on the developed adsorbent. Furthermore, the adsorbent could be reused several times for NCCs adsorption after simple ethanol washing. Therefore, OMDC is a potential adsorbent for the elimination of NCCs from fuels.

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