| Summary: | 碩士 === 國立中興大學 === 環境工程學系所 === 107 === In order to explore the feasibility of lignin reuse, this study determined the lignin derivative vanillyl alcohol as a conversion raw material. Focus on the yield of vanillin and use added metal compounds to increase the selectivity of the target product. Prussian blue analogues (PBA), a class of metal-coordinated frameworks, are proposed in this study for aerobic oxidation of a lignin model compound, vanillyl alcohol (VAL), to the valuable product, vanillin (VN). While different metals and hexacyano-metalates are used to prepare various PBAs, the prototype PBA (Fe3[Fe(CN)6]2 abbreviated as “FeFe”) exhibited the highest catalytic activity towards VAL conversion to VN. The kinetics of VAL conversion is determined and the production of VN is also analyzed using the pseudo first order rate law. In addition, FeFe exhibits the highest catalytic activity to convert VAL to VN with the highest production and selectivity compared to the reported heterogeneous catalysts. FeFe can be also re-used to catalyze conversion of VAL to VN without significant activity loss. These features indicate that FeFe, as an easy-to-obtain and non-toxic pigment, is a promising catalyst for aerobic oxidation of VAL.
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