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Using an advanced physical deposition method, a supported ionic liquid, Et3NHCl·CuCl2 immobilized on cyclodextrin modified zeolite, was developed as an efficient desulfurizer. Quantum chemical calculations were employed for the determination of the size of Et3NHCl·CuCl2, Et3NH+, and CuCl3−. Et3NH+ can be included into the cavity of β-cyclodextrin, suggesting that Et3NHCl·CuCl2 can be well dispersed on the surface of zeolite. Two deposition modes were proposed due to an excessive molar ratio 7:1 of Et3NHCl·CuCl2 to β-cyclodextrin in favor of H2S removal.
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Ma et al. (2018) studied this question.
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