Effect of different zeolite as Pt supports for methanol oxidation reaction

Medina-Ramírez, A.; Ruiz-Camacho, B.; Aguilera, Miguel Villicaña; Esquivel, Ignacio René Galindo; Ramírez-Minguela, J.J.

doi:10.1016/j.apsusc.2018.06.105

Cited by 35 publications

(11 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be concluded that the Pt nanopaticles are loaded on the outside surface, not inside the supercages, of 4A zeolite, since the sizes of the Pt nanoparticles are much bigger than the pore opening of 4A zeolite. In the references mentioned previously, the SEM images of zeolites of different types showed large particle sizes, with μm being used as the unit of scale bars, 13,[15][16][17][19][20][21]23,24 or no SEM images were reported. 14,18,22 The TEM image of Pt/4A-Z, not coated on GC electrode, in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…12 For instance, the Pt nanoparticles supported on zeolites of different types, including types X, Y and ZSM-5, were investigated for the electrooxidation of methanol and ethanol. [13][14][15][16][17][18] Zeolites used in these studies were purchased commercially or synthesized by the researchers themselves and further mixed with carbon black to improve electrical conductivity. 13−17 Type A zeolites have low Si/Al ratios (0.7-1.2), 8 among which 4A zeolite is the most widely used one.…”

mentioning

confidence: 99%

See 1 more Smart Citation

4A Zeolite Support for Pt Nanoparticles towards Methanol Oxidation

Cai¹,

Wu²,

Jin³

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

The effect of 4A zeolite as a support on the electrocatalytic activity of Pt nanoparticles for the oxidation of methanol has been investigated. Pt/4A zeolite and Pt/C catalysts with the same mass of Pt are prepared by loading the Pt nanoparticles stabilized by PEG-400 on 4A zeolite and carbon black, respectively. Physical analyses reveal unevenly distributed but no large agglomerates of the Pt nanoparticles on the surface of 4A zeolite due to PEG-400 attached to the Pt nanoparticles, while the Pt nanoparticles on carbon black show a uniform distribution and a lesser degree of agglomeration. However, Pt/4A zeolite shows a much more negative onset potential and a significantly higher peak current density than Pt/C in methanol oxidation in both acidic and alkaline solutions. Pt/4A zeolite also shows high resistance to the poisoning caused by CO-like species formed in the reaction. The results indicate that 4A zeolite is superior to carbon black as a support for the Pt nanoparticles toward methanol oxidation, and further suggest that some types of zeolites could be used as efficient support materials in electrocatalysis.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

4A Zeolite Support for Pt Nanoparticles towards Methanol Oxidation

Cai¹,

Wu²,

Jin³

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Zeolites due to its porosity as well as the carbon nanotubes with their cylindrical channels can modify the electronic environment of metal oxides. 30,39 Therefore, to understand such an impact on the activity of spinel cobalt oxide (Co 3 O 4 ), herein, we tried to decorate Co 3 O 4 at the surface interface of two hard templating agents and to see its activity in the MOR process. supported by zeolite-Y.…”

Section: Introductionmentioning

confidence: 99%

“…for application in MOR. − However, the cobalt oxide catalyst entrapped at the interface of zeolite Y and carboxy-functionalized MWCNT has not been reported elsewhere. Zeolites due to its porosity as well as the carbon nanotubes with their cylindrical channels can modify the electronic environment of metal oxides. , Therefore, to understand such an impact on the activity of spinel cobalt oxide (Co 3 O 4 ), herein, we tried to decorate Co 3 O 4 at the surface interface of two hard templating agents and to see its activity in the MOR process.…”

Section: Introductionmentioning

confidence: 99%

“…In the recent years, apart from our group, many other researchers have also used zeolites as supports for the decoration of the electrocatalyst for MOR. − In this regard, the cobalt oxide is finding importance due to its good redox activity. They have been widely used as an effective catalyst in the water oxidation reaction and in the current scenario; cobalt oxide has been combined with different metals like Cu, Ni, Sn, W, Rh, etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interfacial Effect-Induced Electrocatalytic Activity of Spinel Cobalt Oxide in Methanol Oxidation Reaction

Khanam,

Saikia,

Lee

et al. 2023

ACS Omega

View full text Add to dashboard Cite

In this study, spinel cobalt oxide (Co3O4) nanoparticles without combining with any other metal atoms have been decorated through the influence of two hard templating agents, viz., zeolite-Y and carboxy-functionalized multiwalled carbon nanotubes (COOH-MWCNT). The adornment of the Co3O4 nanoparticles, through the combined impact of the aluminosilicate and carbon framework has resulted in quantum interference, causing the reversal of signatory Raman peaks of Co3O4. Apart from the construction of small Co3O4 nanoparticles at the interface of the two matrices, the particles were aligned along the direction of COOH-MWCNT. The catalyst Co3O4-Y-MWCNT exhibited excellent catalytic activity toward the methanol oxidation reaction (MOR) in comparison to Co3O4-Y, Co3O4-MWCNT, and bared Co3O4 with the current density of 0.92 A mg–1 at an onset potential of 1.33 V versus RHE. The material demonstrated persistent electrocatalytic activity up to 300 potential cycles and 20,000 s without substantial current density loss. High surface area of zeolite-Y in combination with the excellent conductivity of the COOH-MWCNT enhanced the electrocatalytic performance of the catalyst. The simplicity of synthesis, scale-up, and remarkable electrocatalytic activity of the catalyst Co3O4-Y-MWCNT provided an effective way toward the development of anode materials for direct methanol fuel cells.

show abstract

Dry Reforming of Methane for Hydrogen Production Using Bimetallic Catalysts of Pt‐Fe Supported on γ‐Alumina

et al. 2021

View full text Add to dashboard Cite

Biogas is a combustible composed mostly by methane (CH4) and carbon dioxide (CO2). Methane, the main component of biogas, is the responsible for the characteristics of the fuel itself. Greenhouse gases (GHG), including methane, along with global warming and depletion of fossil fuels have become issues of global concern. In the present work, Pt−Fe catalysts supported on γ‐Al2O3 varying the metal load were synthesized, characterized, and applied in the hydrogen production through dry reforming of methane. The synthesized catalysts were extensively characterized by analytical techniques such as X‐Ray diffraction (XRD), thermal gravimetric analysis coupled with differential thermal analysis (DTA/TGA), infrared spectroscopy with Fourier transform (FT‐IR), scanning electron microscopy (SEM), N2 physisorption, X‐ray photoelectron spectrometer (XPS) and high–resolution transmission electron microscopy (HR‐TEM). The results from the catalytic tests exhibited that methane conversion reached values up to 95 % for all studied catalysts. The maximum H2 selectivity was 68 % (973 K) and 55 % (1173 K), for the bimetallic catalysts 0.15 PFAc (0.5 % Pt‐0.15 % Fe wt/Al2O3) and 0.5 PFAc (0.5 % Pt–0.5 % Fe wt/Al2O3) respectively. XPS and HR‐TEM results confirmed the iron‐platinum phase (FePt). Catalyst characteristics such as specific surface area, average crystallite size and morphology showed to play a role in the methane reforming performance.

show abstract

Effect of different zeolite as Pt supports for methanol oxidation reaction

Cited by 35 publications

References 35 publications

4A Zeolite Support for Pt Nanoparticles towards Methanol Oxidation

4A Zeolite Support for Pt Nanoparticles towards Methanol Oxidation

Interfacial Effect-Induced Electrocatalytic Activity of Spinel Cobalt Oxide in Methanol Oxidation Reaction

Dry Reforming of Methane for Hydrogen Production Using Bimetallic Catalysts of Pt‐Fe Supported on γ‐Alumina

Contact Info

Product

Resources

About