Production of Levulinic Acid via Cellulose Conversion Over Metal Oxide-Loaded MOF Catalysts in Aqueous Medium
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In this study, Zr-MOF material (UiO-66) was modified with different metal oxides (CeO2, Ga2O3, and CoO) and employed in the conversion of cellulose to levulinic acid (LA) in aqueous medium. The research results showed that the introduction of the metal oxides increased the acid content of the catalysts, especially in medium-strong acid. The selectivity of LA was related to the type of metal oxide and the content of medium-strong acid. Due to the activity of Ga2O3 and more medium-strong acid, the yield of LA reaches a maximum yield of 32.0 mol% at 513 K for 360 min when Ga2O3-UiO-66 was employed as the catalysts. The combination of metal oxide and UiO-66 enables the reaction to proceed, providing a new direction for the conversion of cellulose to LA in the aqueous phase.
KeywordsCellulose Levulinic acid Catalytic conversion Metal oxide-loaded MOFs catalyst Aqueous medium
This study was supported financially by National Natural Science Foundation of China (No. 51708252), “the Fundamental Research Funds for the Central Universities” (No. 17lgpy71), National Science for Distinguished Young Scholars of China (No. 21425627), Guangdong Technology Research Center for Synthesis and Separation of Thermosensitive Chemicals (2015B090903061), and Science and Technology Innovation Teams Project of Huizhou (20131226121851953).
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