Abstract
A Pd/Al2O3–CeO2 nanosheets catalyst was fabricated successfully via coprecipitation strategy for the one-pot conversion of acetone to methyl isobutyl ketone (MIBK). Compared with Pd/Al2O3 or Pd/CeO2, Pd/Al2O3–CeO2 exhibited the highest catalytic activity (xACE = 46%) and selectivity (SMIBK = 85%), thereby indicating the excellent synergistic effect between Al2O3 and CeO2. The DFT calculation results indicated that the adsorbed acetone in Pd/Al2O3–CeO2 possessed a stronger orbital energy level than acetone, demonstrating that Pd/Al2O3–CeO2 could increase electron activity of acetone and thus activate acetone hydrogenation process. Meanwhile, more electrons were transferred from CeO2 to Al2O3 and reactants (i.e. acetone, diacetone alcohol, mesityl oxide). When reactants were adsorbed in the catalyst model, some chemical bonds (i.e. C = O, C–H, C–O and C = C) were extended accordingly, indicating that Pd/Al2O3–CeO2 could reduce the reaction barrier and accelerate acetone hydrogenation.
Graphical Abstract
The Pd/Al2O3–CeO2 nanosheets exhibited the highest catalytic activity (xACE = 46%, SMIBK = 85%) due to the unique synergistic effect between Al2O3 and CeO2.
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Acknowledgements
This work was supported by grant from the doctor foundation of Shandong province (No. ZR2019BB010), the China Postdoctoral Science Foundation funded project (2020M672015), the Natural Science Foundation of National (NSFC21978141), the Open Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2020K007), the Open Project of Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education (KFJJ2021009), Anhui Laboratory of Molecule-Based Materials (fzj21001), The fund of the Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education &Hubei Key Laboratory of Catalysis and Materials Science (CHCL20004), Talent Fund for Province and Ministry Co-construction Collaborative Innovation Center of Eco-Chemical Engineering (No. STHGYX2205), Open Project of Guangdong Provincial Key Laboratory of Industrial Surfactant (GDPKLIS-2021-01), the special fund of Beijing Key Laboratory of Clean Fuels and Efficient Catalytic Emission Reduction Technology, and Qingdao Postdoctoral Applied Research Program.
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Lv, Z., Zhang, Y., Gong, Y. et al. Novel Pd/Al2O3–CeO2 Nanosheets for One-Pot Synthesis of Methyl Isobutyl Ketone from Acetone. Catal Lett 153, 441–452 (2023). https://doi.org/10.1007/s10562-022-03991-8
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DOI: https://doi.org/10.1007/s10562-022-03991-8