Enhanced activity of Pt(HY) and Pt–Ru(HY) zeolite catalysts for electrooxidation of methanol in fuel cells

Samant, Purnakala; Fernandes, Julio B.

doi:10.1016/j.jpowsour.2003.07.013

Cited by 67 publications

(28 citation statements)

References 17 publications

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“…A patent filed by Yasumoto and coworkers [94] claimed that the use of a zeolite as support of a metal catalyst in a fuel cell electrode resulted in a lower resistance and less ohmic power losses. Samant and Fernandes [95] investigated the use of Pt(HY) and Pt-Ru(HY) catalysts for electroxidation of methanol in fuel cells. They reported that catalysts prepared in an HY zeolite displayed significantly enhanced electrocatalytic activity even compared to Pt supported on carbon (i.e., Vulcan XC-72).…”

Section: Zeolite Electrocatalystsmentioning

confidence: 99%

Zeolites and Molecular Sieves in Fuel Cell Applications

Yeung

Han

2010

Zeolites and Catalysis

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IntroductionZeolites and molecular sieves belong to an important class of natural and synthetic porous materials [1] that find important applications in many industrial processes including chemical separation and purification, chemical synthesis and fuel conversion, and pollution treatment and abatement [2][3][4]. The discovery of MCM-41 in 1992 [5, 6] has attracted research in the synthesis and applications of large pore molecular sieves including ordered mesoporous materials. The mesoporous materials display a greater range of pore sizes and compositions than typical zeolites and molecular sieves, and researches show that they are excellent catalyst, adsorbent, and membrane materials that have potential applications not only in traditional chemical processes but also in microelectronics, sensors, and agriculture [7-10].Fuel cell promises clean and efficient energy generation for stationary, mobile, and portable applications [11]. Striving for enhanced performance, zeolites and mesoporous materials are increasingly used in fuel cells. They were used to increase proton transport, decrease fuel crossover, and improve water management in the electrolyte membrane. They serve as electrode and electrocatalyst in the fuel cell and are also employed in fuel conversion, reforming, and storage. There are a number of excellent reviews on fuel cell electrolyte membranes [12][13][14][15][16][17] and electrode materials [18,19] in the literature, but none includes the recent uses of zeolites and molecular sieves. This chapter reviews the contributions of zeolites and molecular sieves in fuel cell research and is divided into three sections: (i) zeolites in electrolyte membrane, (ii) zeolites in fuel cell electrocatalysis, and (iii) zeolites in fuel processing for fuel cells. Zeolites in Electrolyte MembraneThe electrolyte membrane in a fuel cell separates the anode and cathode reactants and mediates the electrochemical reactions at the electrodes by rapid and selective

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Section: Zeolite Electrocatalystsmentioning

confidence: 99%

Zeolites and Molecular Sieves in Fuel Cell Applications

Yeung

Han

2010

Zeolites and Catalysis

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“…[27] Meanwhile, ZEA presents low resistance and little ohmic power losses when used as a support in fuel cells. [28] Reduced graphene oxide (RGO), a novel nano material with the composition of a honeycomb arrangement of carbon atoms, has been widely regarded as an excellent catalyst support in the field of materials science. [29][30][31] Until now, much attention has still been paid to RGO for the preparation of RGO-supported catalysts in DMFCs.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Wang

et al. 2017

Chin. J. Chem.

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Cite this paper: Wang, S.; He, P.; He, M.; Dong, F.; Liu, H.; Lei, H.;Zhang, X.; He, S. Chin. J. Chem. 2018, 36, 37- ABSTRACT A novel Pt/Cu-zeolite A/graphene based electrocatalyst was successfully prepared by chemical reduction method for methanol electrooxidation. Graphite oxide and Cu functionalized zeolite A were simultaneously reduced by NaBH 4 to prepare Cu-zeolite A/graphene support which was used to deposit Pt nanoparticles. The nanostructure and composition of as-prepared Pt/Cu-zeolite A/graphene composites were characterized by X-ray diffractometer, X-ray fluorescence, Fourier transform infrared spectrometer and scanning electron microscopy. The electrocatalytic properties of Pt/Cu-zeolite A/graphene modified electrode for methanol oxidation were investigated by cyclic voltammetry and chronoamperometry in 0.10 mol/L H 2 SO 4 ＋0.50 mol/L CH 3 OH solution. Compared with Pt/zeolite A/graphene electrode and Pt/graphene electrode, Pt/Cu-zeolite A/graphene based electrode exhibited obviously enhanced current and higher electrocatalytic activity for methanol electrooxidation. The increased electrocatalytic activity was attributed to the presence of zeolite A and reduced graphene oxide based dual template, which significantly increased the effective electrode surface and facilitated the diffusion of analytes into the electroactive catalyst.

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“…Transition metal-containing zeolites were found to exhibit a high catalytic activity. Ni-containing zeolites [5], Agzeolites [6], Pd-zeolites [7], Ti-zeolites [8], Pt-and Pt-Ru-zeolites [9] have been used for catalytic purposes. On the other hand, hydrogen peroxide plays a significant role in the chemical and pharmaceutical industries as an oxidizing, bleaching and sterilizing agent.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Amperometric Sensor for Hydrogen Peroxide by Using a Carbon Paste Electrode Modified with Cobalt Impregnated Zeolite

Norouzi¹,

Moradian²,

Malekan³

2015

Port. Electrochim. Acta

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Cobalt impregnated zeolite-modified electrode was prepared by mixing cobalt-zeolite (Co-Z) and graphite powder with different percentages. Using the cyclic voltammetric technique, the electrochemical oxidation of hydrogen peroxide at such electrodes was investigated. Experiments on zeolite show that it is not electrochemically active towards hydrogen peroxide oxidation in NaOH solution. The presence of cobalt ions in the zeolite matrix, by soaking the electrode in an aqueous Co(NO 3 ) 2 solution, markedly enhances the electrocatalytic activity which was found to depend on the cobalt content. On the other hand, the presence of zeolite and/or Co metals in the catalyst is essential; however, the electro-catalytic activity depends on different percentages of Co-Z. Under the selected conditions, the anodic peak current was linearly dependent on the concentration of the hydrogen peroxide in the range 0.03-9 and 0.006-0.1 mM with CV and amperometric methods, respectively. The detection limits (S/N=3) were also estimated to be 17 and 2.5 µM.

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Enhanced activity of Pt(HY) and Pt–Ru(HY) zeolite catalysts for electrooxidation of methanol in fuel cells

Cited by 67 publications

References 17 publications

Zeolites and Molecular Sieves in Fuel Cell Applications

Zeolites and Molecular Sieves in Fuel Cell Applications

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

An Efficient Amperometric Sensor for Hydrogen Peroxide by Using a Carbon Paste Electrode Modified with Cobalt Impregnated Zeolite

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