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http://dx.doi.org/10.7316/KHNES.2017.28.6.669

The Analysis Method for Evaluation of Phosphoric Acid Poisioning of Pt Based Catalyst by Using Hydrogen Peroxide Decomposition Reaction  

PARK, JEONGJIN (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
YANG, SEUNGWON (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
CHUNG, ONGJIN (Department of Chemical and Biological Engineering, Korea National University of Transportation)
KWON, YONGCHAI (Graduate School of Energy and Environment, Seoul National University of Science and Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.28, no.6, 2017 , pp. 669-674 More about this Journal
Abstract
In this study, the novel electrochemical and colorimetric analysis methods are suggested to estimate the degree of phosphoric acid ion poisoning on Pt based catalyst surface and to confirm the possibility of replacing the expensive and long time consumed conventional methods. As the ways, the electrochemical half cell tests such as cyclic voltammetry (CV) and linear sweep voltammetry (LSV) are used and the change in chemical behavior by absorption of the phosphoric acid ion on Pt based catalyst surface and hydrogen peroxide decomposition reaction are successfully recognized by colorimetric measurements. Conclusively, it is proved that the new methods show superior sensitivity for identifying the degree of phosphoric acid poisoned on Pt based catalyst.
Keywords
Phosphoric acid; Platinum catalyst; Hydrogen peroxide; Ferroin indicator; PEMFC;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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