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Citation: LI Linru, CHEN Chong, XU Bin, CAO Gaoping, YANG Yusheng, LU Tianhong. Electrocatalytic Performance of Ir Catalyst Supported on Macroporous Carbon for Ammonia Oxidation[J]. Chinese Journal of Applied Chemistry, ;2012, 29(1): 95-99. doi: 10.3724/SP.J.1095.2012.00052 shu

Electrocatalytic Performance of Ir Catalyst Supported on Macroporous Carbon for Ammonia Oxidation

LI Linru ^a ,
CHEN Chong ^a ,
XU Bin ^b ,
CAO Gaoping ^b ,
YANG Yusheng ^b ,
LU Tianhong ^a,c,,

1.
a Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China;
2.
b Research Institute of Chemical Defense, Beijing 100191, China;
3.
c Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: LU Tianhong,
Received Date: 8 February 2011
Available Online: 23 May 2011
Fund Project:

Macroporous carbon supported Ir(Ir/MC) and Vulcan XC-72 carbon supported Ir(Ir/XC) catalysts were prepared respectively.Based on the characterization of the catalysts using the energy dispersive spectroscopy,X-ray diffraction spectroscopy and Raman spectroscopy,the electrocatalytic performances of the two catalysts for the ammonia oxidation were investigated.It was found that the peak current density of the ammonia oxidation at the Ir/MC catalyst electrode is 38.7% larger than that at the Ir/XC catalyst electrode and the electrocatalytic stability of the Ir/MC catalyst is better than that of the Ir/XC catalyst.Because the average size and the relative crystallinity of the Ir particles in the Ir/MC catalyst is similar to that in the Ir/XC catalyst,the above results can be attributed to the larger pore size and porosity as well as the higher conductivity due to the high graphitization extent of MC.
- ammonia oxidation,
- macroporous carbon supported Ir catalyst,
- electrocatalytic performance,
- current type of electrochemical sensor
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