On the Influence of Ag on Pd-based Electrocatalyst for Methanol Oxidation in Alkaline Media: A Comparative Differential Electrochemical Mass Spectrometry Study
By Tilman Jurzinsky and Carsten Cremers and Karsten Pinkwart and Jens T
Published in Electrochimica Acta
NULL
2016
Abstract
In this study methanol oxidation in alkaline media was investigated in detail on Pd/C, Ag/C and PdAg/C catalysts. The electrochemical activity towards methanol oxidation reaction, the surface inhibition behavior and the \CO2\ current efficiency was evaluated for the catalysts by cyclic voltammetry, chronoamperometry, \CO\ adsorbate stripping and \CH3OH\ adsorbate stripping experiments in a differential electrochemical mass spectrometry (DEMS) flow cell setup. PdAg/C catalysts showed higher current densities, lower oxidation onset potentials and lower sensitivity to surface inhibition than Pd/C. Due to detailed studies on the \CO2\ current efficiencies, side products and adsorbate reactions via DEMS, novel insights into the electrooxidation of methanol on Pd/C and PdAg/C were provided. Even though Ag/C itself was not significantly active for methanol electrooxidation, it was able to promote Pd in its electrochemical activity towards methanol oxidation reaction and selectivity towards production of CO2. Additionally, PdAg/C showed lower sensitivity to catalyst poisoning compared to Pd/C.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.