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Preparation of Nitrogen-Doped Carbon Catalyst to Oxygen Reduction Reaction and Influence of Protective Gas Flowing on Its Activity
Zhong-ping Xiong,Yu-jun Si,Hong Yu,Min-jiao Li,Mao-xue Chen
Author NameAffiliationE-mail
Zhong-ping Xiong Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China  
Yu-jun Si Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China syj08448@163.com 
Hong Yu Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China  
Min-jiao Li Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China  
Mao-xue Chen Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China  
Abstract:
A non-precious metal catalyst MnHMTA/C to oxygen reduction reaction was prepared by py-rolyzing a precursor from manganese chloride, hexamethylenetetramine and acetylene black in nitrogen gas atmosphere. The effect of heat treatment temperature and owing of nitro-gen gas were investigated. A catalyst with the highest activity can be obtained at 700 ℃. Mn(II) ion was changed to MnO in heat treatment, which improved the catalytic activity of the catalyst. Hexamethylenetetramine takes part in the formation of active site of the cata-lyst as its decomposed gases. The owing of protective gas takes the decomposed gases out of the tube furnace and brings negative effect on the catalytic activity of the MnHMTA/C catalyst.
Key words:  Oxygen reduction reaction  Non-precious metal catalyst  Manganese  Protec-tive gas flowing
FundProject:This work is supported by the Specialized Research Fund for the Doctoral Program of Sichuan University of Science and Engineering (No.2012RC16), the Open-ing Project of Key Laboratory of Green Catalysis of Sichuan Institutes of High Education (No.LYJ1401 and No.LYJ14206), and the Program of Education Depart-ment of Sichuan Province (No.15ZB0208).
氮掺杂碳制备氧还原反应催化剂及保护气流动对催化剂活性的影响
熊中平,司玉军,余鸿,李敏娇,陈茂学
摘要:
在氮气氛围中热处理含氯化锰、六次甲基四胺和乙炔黑的前驱体制备非贵金属氧还原反应催化剂MnHMTA/C. 考察了热处理温度和保护气流动对催化剂活性的影响. 在700 ℃下热处理2 h所得催化剂具有良好的催化活性. 在热处理过程中,Mn(II)离子转变为MnO,改进了催化剂活性. 六次甲基四胺以其气体分解产物参与催化剂活性位的生成,保护气的流动会将气体分解产物带出,从而减弱MnHMTA/C催化剂的性能.
关键词:  氧还原反应  非贵金属催化剂  锰元素  保护气流动
DOI:10.1063/1674-0068/29/cjcp1506135
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