Zeolite supported platinum nanoparticles for small organic molecule oxidation and reduction in fuel cell using impregnation

Yao, Jun and Yao, Yufeng (2018) Zeolite supported platinum nanoparticles for small organic molecule oxidation and reduction in fuel cell using impregnation. In: E-MRS 2018 FALL MEETING, 17th-20th September, Warsaw University of Technology - POLAND.

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Zeolite supported platinum nanoparticles for small organic molecule oxidation and reduction in fuel cell using impregnation
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Item Type:Conference or Workshop contribution (Paper)
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Abstract

The performance of platinum (Pt)-impregnated NaY zeolite electrocatalyst has been evaluated for small molecule oxidation and reduction. The Cyclic Voltammetry (CV) measurement has provided a contradicting trend of electrochemical oxidation and reduction activity of methanol (CH3OH) and formic acid (HCOOH) on Pt impregnated zeolite electrocatalyst, where the HCOOH has shown a similar level of oxidation and reduction activity to those observed on Pt zeolite electrocatalyst made by ion exchange method, whilst a decrease of CH3OH oxidation and reduction was detected by using Pt impregnated zeolite catalyst. This may be associated to Pt nanoparticle size and Pt surface distribution on zeolite. The en-situ Extended X-Ray Adsorption Fine Structure (EXAFS) analysis has shown Pt particle size is smaller for those made by impregnation method than by ion exchange process (1) at same Pt loading on zeolite. The X Ray Diffraction (XRD) measurement reveals there is a reduction of zeolite crystallinity under calcinations and reduction process with correspondent to 50% decrease of zeolite pores, which was confirmed by Brunauer Emmett and Teller (BET) surface measurement.

Keywords:platinum (Pt)-impregnated NaY zeolite electrocatalyst, activity of methanol (CH3OH) and formic acid (HCOOH), en-situ Extended X-Ray Adsorption Fine Structure (EXAFS) analysis
Subjects:F Physical Sciences > F170 Physical Chemistry
F Physical Sciences > F342 Quantum Mechanics
F Physical Sciences > F200 Materials Science
Divisions:College of Science > School of Engineering
ID Code:33307
Deposited On:20 Oct 2018 19:50

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