scholarly journals Effect of the Residual Silver and Adsorbed Lead Anions towards the Electrocatalytic Methanol Oxidation on Nanoporous Gold in Alkaline Media

2021 ◽  
pp. 138348
Author(s):  
Alex Ricardo Silva Olaya ◽  
Birthe Zandersons ◽  
Gunther Wittstock
Keyword(s):  
Methanol Oxidation ◽  
Nanoporous Gold ◽  
Alkaline Media

Mn-Mo-O Catalysts for Methanol Oxidation. I. Preparation and Characterization of the Catalysts

1992 ◽  
Vol 57 (12) ◽  
pp. 2529-2538 ◽  
Author(s):  
Krasimir Ivanov ◽  
Penka Litcheva ◽  
Dimitar Klissurski
Keyword(s):  
Methanol Oxidation ◽  
Solution Concentration ◽  
Alkaline Media ◽  
Acidic Media ◽  
Chemical Methods ◽  
X Ray ◽  
Ph Values ◽  
Precipitate Composition

Mn-Mo-O catalysts with a different Mo/Mn ratio have been prepared by precipitation. The precipitate composition as a function of solution concentration and pH was studied by X-ray, IR, thermal and chemical methods. Formation of manganese molybdates with MnMoO4.1.5H2O, Mn3Mo3O12.2.5H2O, and Mn3Mo4O15.4H2O composition has been supposed. It is concluded that pure MnMoO4 may be obtained in both acid and alkaline media, the pH values depending on the concentration of the initial solutions. The maximum Mo/Mn ratio in the precipitates is 1.33. The formation of pure Mn3Mo4O15.4H2O is possible in weakly acidic media. This process is favoured by increasing the concentration of initial solutions.

Electrocatalytic performance of inorganic nanoflakes nickel phosphates under adjusted synthetic parameters towards urea and methanol oxidation in alkaline media

2021 ◽  
Vol 163 ◽  
pp. 105901
Author(s):  
Mai M. Khalaf ◽  
Hany M. Abd El-Lateef ◽  
Ahmed H. Touny ◽  
M.M. Saleh ◽  
Ibrahim M.A. Mohamed
Keyword(s):  
Methanol Oxidation ◽  
Alkaline Media ◽  
Electrocatalytic Performance ◽  
Nickel Phosphates

Enhanced Photoelectrocatalytic Activity of Methanol Oxidation on TiO2-Decorated Nanoporous Gold

2009 ◽  
Vol 113 (36) ◽  
pp. 16138-16143 ◽  
Author(s):  
Chuancheng Jia ◽  
Huiming Yin ◽  
Houyi Ma ◽  
Rongyue Wang ◽  
Xingbo Ge ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Nanoporous Gold

Simple synthesis of Pt-Ag/SnO2-C for use as a catalyst of methanol oxidation in alkaline media

2017 ◽  
Vol 21 (8) ◽  
pp. 2449-2456 ◽  
Author(s):  
B. Ruiz-Camacho ◽  
A. Medina-Ramírez ◽  
R. Fuentes-Ramírez ◽  
Claudia M. Gómez
Keyword(s):  
Methanol Oxidation ◽  
Simple Synthesis ◽  
Alkaline Media

scholarly journals New Insights into the Electrocatalytic Mechanism of Methanol Oxidation on Amorphous Ni-B-Co Nanoparticles in Alkaline Media

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 749 ◽  
Author(s):  
Wu ◽  
Zhang ◽  
Zhang ◽  
Duan ◽  
Li ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Amorphous Materials ◽  
Reaction Order ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Kinetic Studies ◽  
Alkaline Media ◽  
Methanol Oxidation Reaction ◽  
Oxidation Reactions ◽  
Co Nanoparticles

Despite an increased interest in sustainable energy conversion systems, there have been limited studies investigating the electrocatalytic reaction mechanism of methanol oxidation on Ni-based amorphous materials in alkaline media. A thorough understanding of such mechanisms would aid in the development of amorphous catalytic materials for methanol oxidation reactions. In the present work, amorphous Ni-B and Ni-B-Co nanoparticles were prepared by a simple chemical reduction, and their electrocatalytic properties were investigated by cyclic voltammetry measurements. The diffusion coefficients (D0) for Ni-B, Ni-B-Co0.02, Ni-B-Co0.05, and Ni-B-Co0.1 nanoparticles were calculated to be 1.28 × 10−9, 2.35 × 10−9, 4.48 × 10−9 and 2.67 × 10−9 cm2 s−1, respectively. The reaction order of methanol in the studied transformation was approximately 0.5 for all studied catalysts, whereas the reaction order of the hydroxide ion was nearly 1. The activation energy (Ea) values of the reaction were also calculated for the Ni-B and Ni-B-Co nanoparticle systems. Based on our kinetic studies, a mechanism for the methanol oxidation reaction was proposed which involved formation of an electrocatalytic layer on the surface of amorphous Ni–B and Ni-B-Co nanoparticles. And methanol and hydroxide ions could diffuse freely through this three-dimensional porous conductive layer.

Platinum nanoparticles coated by graphene layers: A low-metal loading catalyst for methanol oxidation in alkaline media

2020 ◽  
Vol 40 ◽  
pp. 81-88 ◽  
Author(s):  
Camelia Berghian-Grosan ◽  
Teodora Radu ◽  
Alexandru R. Biris ◽  
Monica Dan ◽  
Cezara Voica ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Platinum Nanoparticles ◽  
Alkaline Media ◽  
Graphene Layers ◽  
Metal Loading

Hydrogen and Methanol Oxidation Reaction in Hydroxide and Carbonate Alkaline Media

2011 ◽  
Vol 158 (4) ◽  
pp. B349 ◽  
Author(s):  
Jose A. Vega ◽  
Shawna Smith ◽  
William E. Mustain
Keyword(s):  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Alkaline Media ◽  
Methanol Oxidation Reaction
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