Effect of central metal ions of analogous metal-organic frameworks on the adsorptive removal of benzothiophene from a model fuel

Journal of Hazardous Materials, Volume 260, 15 September 2013, Pages 1050–1056
Effect of central metal ions of analogous metal-organic frameworks on the adsorptive removal of benzothiophene from a model fuel
Nazmul Abedin Khan, Sung Hwa Jhung
Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, Daegu 702-701, Korea
Abstract
Reports results of an investigation of liquid phase adsorption of benzothiophene (BT) over CuCl₂-loaded analogous metal-organic frameworks (MOFs), metal-benzenedicarboxylates (Me-BDCs, Me: Al, Cr and V). The goal of the study was to understand the effect of central metal ions on the adsorptive removal of BT from a model fuel.
Among the central metal ions (Al³⁺, Cr³⁺ and V³⁺) of the Me-BDCs only V³⁺ was oxidized by the loaded CuCl₂ (or Cu²⁺) at ambient condition resulting in V⁴⁺ and Cu⁺ species. As opposed to the CuCl₂-loaded Al- and Cr-BDCs, the CuCl₂/V-BDC adsorbed BT significantly better than the virgin V-BDCs. This would indicate a specific favorable interaction (π-complexation) between the obtained Cu⁺ in the CuCl₂/V-BDC and BT.
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