“…To solve the problem of harsh conditions in HDS, the relatively expensive raw materials of ILs and the loss of H 2 O 2 in catalytic oxidative desulfurization, TBAB and PEG-200 were selected as the raw materials of a DES according to previous studies. Both TBAB and TBAC can also be used as phase transfer catalysts and ion pair reagents, [38][39][40][41] but the cost of TBAB is lower than that of its counterpart. Hence, TBAB/PEG-200 DESs with different molar ratios were synthesized by using PEG-200 as the HBD and TBAB as the HBA and characterized by Fourier transform infrared (FT-IR) spectroscopy and 1 H nuclear magnetic resonance ( 1 H NMR) spectroscopy.…”
“…To solve the problem of harsh conditions in HDS, the relatively expensive raw materials of ILs and the loss of H 2 O 2 in catalytic oxidative desulfurization, TBAB and PEG-200 were selected as the raw materials of a DES according to previous studies. Both TBAB and TBAC can also be used as phase transfer catalysts and ion pair reagents, [38][39][40][41] but the cost of TBAB is lower than that of its counterpart. Hence, TBAB/PEG-200 DESs with different molar ratios were synthesized by using PEG-200 as the HBD and TBAB as the HBA and characterized by Fourier transform infrared (FT-IR) spectroscopy and 1 H nuclear magnetic resonance ( 1 H NMR) spectroscopy.…”
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