| 초록 |
The direct synthesis of H2O2 is a promising candidate that closely satisfies the requirement for an ideal H2O2 production. While carbon supported noble metal catalysts have been extensively used in the DSHP reaction, a simple Pd/C catalyst usually exhibits a low H2O2 yield, particularly without use of acid/halide promoters. In this work, a range of FePd/C catalysts was prepared by the impregnation of cationic Pd ions on various carbon supports, followed by the simultaneous microwave-irradiated CNT growth and reduction. The pyrolysis of ferrocene and other carbon sources efficiently regulated the Pd NP size during the microwave-irradiated reduction of Pd. The use of hexane as an additional carbon source was efficient in decreasing Pd NP size as well as increasing Pd2+/Pd0 ratio, which was beneficial in attaining a high H2O2 selectivity. In the presence of FePd/GR-H catalyst, H2O2 productivity and selectivity reached as high as 1492.3 mmol H2O2/g-Pd.h and 68.8%, respectively. The excellent catalytic activity clearly demonstrates that microwave irradiation can fine-tune catalytic activity by controlling the geometric and electronic features of Pd on the carbon supports. |
