Ternary Pt45Ru45M10/C (M=Mn, Mo and W) catalysts for methanol and ethanol electro-oxidation
Ternary Pt45Ru45M10/C (M=Mn, Mo and W) catalysts for methanol and ethanol electro-oxidation
Min Ku Jeon(Korea Advanced Institute of Science and Technology); Ki Rak Lee(Korea Advanced Institute of Science and Technology); 우성일(korea Advanced Institute of Science and Technology)
26권 4호, 1028~1033쪽
초록
Ternary Pt45Ru45Mn10/C, Pt45Ru45Mo10/C and Pt45Ru45W10/C catalysts were synthesized and physical and electrochemical properties were characterized. Particle sizes of the catalysts were determined by X-ray diffraction to be 3.9, 4.8 and 4.6 nm for the Mn, Mo and W incorporated catalysts, respectively. Electrochemically active surface areas were calculated from CO stripping results, which were 17.7, 17.2 and 15.7㎡/gcatal for the Pt45Ru45Mn10/C, Pt45Ru45Mo10/ C and Pt45Ru45W10/C catalysts, respectively. In methanol electro-oxidation, the Pt45Ru45W10/C catalyst showed highest mass and specific activities of 2.78 A/gcat. and 177mA/㎡, respectively, which were 22 and 100% higher than those of commercial PtRu/C. In the case of ethanol electro-oxidation, the Pt45Ru45Mo10/C catalyst exhibited highest mass and specific activities of 4.8 A/gcatal and 280 mA/m2, respectively. Specific activity of the Pt45Ru45Mo10/C catalyst was 56% higher than that of the commercial PtRu/C.
Abstract
Ternary Pt45Ru45Mn10/C, Pt45Ru45Mo10/C and Pt45Ru45W10/C catalysts were synthesized and physical and electrochemical properties were characterized. Particle sizes of the catalysts were determined by X-ray diffraction to be 3.9, 4.8 and 4.6 nm for the Mn, Mo and W incorporated catalysts, respectively. Electrochemically active surface areas were calculated from CO stripping results, which were 17.7, 17.2 and 15.7㎡/gcatal for the Pt45Ru45Mn10/C, Pt45Ru45Mo10/ C and Pt45Ru45W10/C catalysts, respectively. In methanol electro-oxidation, the Pt45Ru45W10/C catalyst showed highest mass and specific activities of 2.78 A/gcat. and 177mA/㎡, respectively, which were 22 and 100% higher than those of commercial PtRu/C. In the case of ethanol electro-oxidation, the Pt45Ru45Mo10/C catalyst exhibited highest mass and specific activities of 4.8 A/gcatal and 280 mA/m2, respectively. Specific activity of the Pt45Ru45Mo10/C catalyst was 56% higher than that of the commercial PtRu/C.
- 발행기관:
- 한국화학공학회
- 분류:
- 화학공학