Synthesis and Comparative Study of Nanoporous Palladium-Based Bimetallic Catalysts for Formic Acid Oxidation

2014 ◽  
Vol 118 (51) ◽  
pp. 29903-29910 ◽  
Author(s):  
Brian D. Adams ◽  
Robert M. Asmussen ◽  
Cassandra K. Ostrom ◽  
Aicheng Chen
Keyword(s):  
Comparative Study ◽  
Formic Acid ◽  
Bimetallic Catalysts ◽  
Formic Acid Oxidation ◽  
Acid Oxidation

scholarly journals Formic acid oxidation at platinum-bismuth catalysts

2015 ◽  
Vol 80 (10) ◽  
pp. 1217-1249 ◽  
Author(s):  
Ksenija Popovic ◽  
Jelena Lovic
Keyword(s):  
Formic Acid ◽  
Bimetallic Catalysts ◽  
Chemical Properties ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Key Factors ◽  
Anode Catalysts ◽  
Onset Potential ◽  
Oxidation Current ◽  
Anodic Reactions

The field of heterogeneous catalysis, specifically catalysis on bimetallic surfaces, has seen many advances over the past few decades. Bimetallic catalysts, which often show electronic and chemical properties that are distinct from those of their parent metals, offer the opportunity to obtain new catalysts with enhanced selectivity, activity, and stability. The oxidation of formic acid is of permanent interest as a model reaction for the mechanistic understanding of the electrooxidation of small organic molecules and because of its technical relevance for fuel cell applications. Platinum is one of the most commonly used catalysts for this reaction, despite the fact that it shows a few significant disadvantages: high cost and extreme susceptibility to poisoning by CO. To solve this problem, several approaches have been used, but generally, they all consist in the modification of platinum with a second element. Especially, bismuth has received significant attention as Pt modifier. According to the results presented in this survey dealing with the effects influencing the formic acid oxidation it was found that two types of Pt-Bi bimetallic catalysts (bulk and low loading deposits on GC) showed superior catalytic activity in terms of the lower onset potential and oxidation current density, as well as exceptional stability compared to Pt. The findings in this report are important for the understanding of mechanism of formic acid electrooxidation on a bulk alloy and decorated surface, for the development of advanced anode catalysts for direct formic acid fuel cells, as well as for the synthesis of novel low-loading bimetallic catalysts. The use of bimetallic compounds as the anode catalysts is an effective solution to overcoming the problems of the formic acid oxidation current stability for long term applications. In the future, the tolerance of both CO poisoning and electrochemical leaching should be considered as the key factors in the development of electrocatalysts for the anodic reactions.

Technical and Economic Evaluation of a Formic Acid/Hydrogen Peroxide Fuel Cell System With Pt-M/C as Anode Catalyst

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
W. Sangarunlert ◽  
S. Sukchai ◽  
A. Pongtornkulpanich ◽  
A. Nathakaranakule ◽  
T. Luschtinetz
Keyword(s):  
Hydrogen Peroxide ◽  
Fuel Cell ◽  
Formic Acid ◽  
Bimetallic Catalysts ◽  
Linear Sweep Voltammetry ◽  
Formic Acid Oxidation ◽  
Cell System ◽  
Cell Performance ◽  
Acid Oxidation ◽  
Anode Catalysts

Cell performance of formic acid/hydrogen peroxide (HCOOH/H2O2) fuel cell, using commercial Pt-Ru/C, and prepared Pt-M/C (M = Ir, Mo, Co, Ag, W, Ni, Sn) bimetallic catalysts as anode catalysts are experimentally investigated and reported in this paper. Corresponding to cell performance, electrocatalytic activity of the system using commercially available and prepared catalysts is evaluated by linear sweep voltammetry technique (LSV). The result shows that the system using 20%Pt-10%Sn/C yields better formic acid oxidation reaction than that of other Pt-M/C bimetallic catalysts, but it is inferior to that of 20%Pt-10%Ru/C commercial catalyst. In addition, the cell performance of HCOOH/H2O2 fuel cell with various catalyst compositions of Pt and Sn content, in portions of 10:20, 15:15, and 20:10, respectively, is also studied. Comparison among those catalysts, 15%Pt-15%Sn/C yields better cell performance than the others. Levelized energy cost (LEC) and sensitivity analysis on LEC are also assessed.

NANOELECTROCATALYSTS BASED PALLADIUM FOR FUEL CELLS WITH DIRECT OXIDATION OF FORMIC ACID

2019 ◽  
Vol 6 (3) ◽  
pp. 104-107
Author(s):  
Marina Vladimirovna Lebedeva ◽  
Alexey Petrovich Antropov ◽  
Alexander Victorovich Ragutkin ◽  
Nicolay Andreevich Yashtulov
Keyword(s):  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Electrode Materials ◽  
Formic Acid Oxidation ◽  
Energy Sources ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Atomic Force ◽  
Formic Acid Oxidation Reaction

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

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