摘要
采用混合溶剂法合成了中位噻吩基取代的卟啉,液相法合成了噻吩基卟啉亚铁(T(2-Th)PFe(Ⅱ))化合物.以T(2-Th)PFe(Ⅱ)为前驱体固载到活性碳上得到T(2-Th)PFe(Ⅱ)/C催化剂.用透射电镜对催化剂表面进行观察,旋转圆盘电极探讨合成催化剂的最佳制备工艺.为研究催化剂催化氧还原性能,将最佳制备工艺下得到的T(2-Th)PFe(Ⅱ)/C催化剂与30wt%Pt/C催化剂作了比较.实验结果表明:金属卟啉均匀分散在活性碳的表面.600℃活化,4wt%Fe(Ⅱ)的催化剂催化氧还原性能最佳.T(2-Th)PFe(Ⅱ)/C催化剂的催化氧还原性能接近于30wt%Pt/C催化剂.耐甲醇实验证明此类催化剂具有很好的耐甲醇性.
This paper used mixed solvent method to synthesize meso-5,10,15,20-tetra(2-thienyl) porphyrin and used liquid-phase method to synthesize meso-5,10,15,20-tetra(2-thienyl) porphyrin iron ( Ⅱ ) (T(2-Th)PFe( Ⅱ )). T(2-Th)PFe( Ⅱ ) was absorbed on active carbonto get T (2-Th) PFe (Ⅱ ) / C Catalyst. TEM was used to observe the surface of the catalyst. Rotating disk elec- trode was used to explore the best preparation of catalyst. The results show that T (2-Th) PFe ( Ⅱ) uniformly disperses on the carbon surface. 600 ℃ and 4wt% Fe ( Ⅱ ) are best preparation parameters for oxygen reduction. The performance of T (2-Th) PFe ( U ) /C catalyst for oxygen reduction is close to 30wt Pt/C. The experiment of resistance to methanol proves that T (2- Th) PFe ( Ⅱ ) /C has good resistance to methanol.
出处
《山东理工大学学报(自然科学版)》
CAS
2014年第2期1-4,共4页
Journal of Shandong University of Technology:Natural Science Edition
基金
国家自然科学基金资助项目(21276148
21076119
20776081)
关键词
噻吩基卟啉亚铁
氧还原催化剂
最佳制备工艺
耐甲醇性能
meso-tetra (2-thienyl) porphyrin iron ( Ⅱ)
the oxygen reduction catalyst
best cata-lyst synthesis
resistance to methanol