Decomposition of no on Pd and Ir. Comparison with Pt and Rh

Papapolymerou, G.

doi:10.1007/bf02071125

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Thus, the proposed kinetic models proved to predict reaction mechanism and rates satisfactorily. The result is similar to that described in relevant literature [31][32][33][34][35].…”

Section: Resultssupporting

confidence: 94%

Decomposition kinetics of ammonia in gaseous stream by a nanoscale copper-cerium bimetallic catalyst

Dong¹

2008

Journal of Hazardous Materials

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“…Thus, the proposed kinetic models proved to predict reaction mechanism and rates satisfactorily. The result is similar to that described in relevant literature [31][32][33][34][35].…”

Section: Resultssupporting

confidence: 94%

Decomposition kinetics of ammonia in gaseous stream by a nanoscale copper-cerium bimetallic catalyst

Dong¹

2008

Journal of Hazardous Materials

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“…Before 1990, Fe-based catalysts had brought a lot of attention [37]. In the last decade or so, a lot of work has been focused on Ru catalysts [30,37]. However, the metal Ru catalyst is not feasible for practical application in SOFCs due to its high price.…”

Section: Performance Of the Cell With Ni-ssz Anode Infiltrated With Imentioning

confidence: 99%

Improved performance of ammonia-fueled solid oxide fuel cell with SSZ thin film electrolyte and Ni-SSZ anode functional layer

Liu

Sun

et al. 2012

International Journal of Hydrogen Energy

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“…Therefore, one could hypothesize that the weak adsorption of ammonia and strong adsorption of N ads atoms on Rh lead to minimum ammonia electrooxidation. Although Rh has remarkably slow reaction rate of AOR, [51] it suffers less from degradation, as indicated by the overlapping CV curves over several cycles.…”

Section: 3electrochemical Oxidation Of Ammonia On Rh/c Electrodementioning

confidence: 99%

Revisiting the electrochemical oxidation of ammonia on carbon-supported metal nanoparticle catalysts

Wang

Botte

2017

Electrochimica Acta

105

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The ammonia electro-oxidation reaction (AOR) has been studied due to its promising applications in ammonia electrolysis, wastewater remediation, direct ammonia fuel cells, and sensors. However, it is difficult to compare and analyze the reported electrocatalytic activity of AOR reliably, likely due to the variation in catalyst synthesis, electrode composition, electrode morphology, and testing protocol. In this paper, the electro-oxidation of ammonia on different carbon-supported precious metal nanoparticle catalysts was revisited. The effect of experimental conditions, electrochemical test parameters, electrocatalytic activity, thermodynamics, and possible deactivation mechanism of the catalysts were investigated. Pt/C catalyst possesses the highest electrocatalytic activity, while Ir/C and Rh/C show lower overpotential. The onset potential of the AOR is related to the hydrogen binding energy of the catalyst. N ads is one major cause of deactivation accompanied with the formation of surface O/OH ads at high potentials. The coulombic efficiency of N ads formation on Pt is about 1% initially and gradually decreases with reaction time. Increase in ammonia concentration leads to increase in current density, while increase in hydroxyl ions concentration can enhance the current density and reduce the overpotential simultaneously. The slopes of AOR onset potential and hydrogen adsorption/desorption potential of Pt/C as a function of pH follow Nernst equation. In contrast, potentials measured at different current densities exhibit non-Nernstian behavior, suggesting a critical role of the local pH change.

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Decomposition of no on Pd and Ir. Comparison with Pt and Rh

Cited by 5 publications

References 12 publications

Decomposition kinetics of ammonia in gaseous stream by a nanoscale copper-cerium bimetallic catalyst

Decomposition kinetics of ammonia in gaseous stream by a nanoscale copper-cerium bimetallic catalyst

Improved performance of ammonia-fueled solid oxide fuel cell with SSZ thin film electrolyte and Ni-SSZ anode functional layer

Revisiting the electrochemical oxidation of ammonia on carbon-supported metal nanoparticle catalysts

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