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. 2023 Apr 16;16(8):3133. doi: 10.3390/ma16083133

Figure 5.

Figure 5

(a) Catalytic behavior of homogeneous POMs, PMo12 and PW12, and supporting MOFs, ZIF-8 and ZIF-67. Assays were performed at 70 °C in a model fuel/[BMIM]PF6 biphasic system with 3 μmol of POM or 15 mg of MOF. ODS reaction starts at 0 min with the addition of aq. H2O2, after a 10 min extraction step. (b) Desulfurization profile of a multicomponent model fuel using PMo12@ZIF-8, PW12@ZIF-8, and PMo12@ZIF-67 catalysts, [BMIM]PF6 extraction solvent, H2O2 oxidant, at 70 °C. (c) Recycling desulfurization process for ten consecutive cycles (2 h each reaction) using PMo12@ZIF-8 catalyst.