采用甲醛液相还原法制备石墨烯负载Pd纳米颗粒催化剂,利用HRTEM、STEM、HAADF、XPS、TG、XRD、N2物理吸附、CO脉冲化学吸附等手段对样品进行表征.结果显示,高比表面积石墨烯作为催化剂载体,有助于获得高分散和金属态为主的Pd纳米颗粒.HMF催化氧化实验表明,Pd/rGO催化剂能够高效催化HMF转化为FDCA.50℃常压反应6h,HMF转化率和FDCA的收率分别为96.9％和66.6％.反应动力学结果显示,HMF转化和生成FDCA的活化能分别为(45.6±4.6)kJ/mol、(71.3±2.5)kJ/mol.
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