Direct Oxidation of Methanol on Self-Supported Nanoporous Gold Film Electrodes with High Catalytic Activity and Stability

2007 ◽  
Vol 19 (25) ◽  
pp. 6065-6067 ◽  
Author(s):  
Chuanfang Yu ◽  
Falong Jia ◽  
Zhihui Ai ◽  
Lizhi Zhang
Keyword(s):  
Catalytic Activity ◽  
Gold Film ◽  
Nanoporous Gold ◽  
High Catalytic Activity ◽  
Direct Oxidation ◽  
Oxidation Of Methanol

Nanoporous gold film: fabrication and role as a catalytic reactor

2015 ◽  
Vol 44 (26) ◽  
pp. 11929-11934 ◽  
Author(s):  
Youyi Xia ◽  
Xiang Deng ◽  
Shuxin Yan ◽  
Chang Gao ◽  
Cong Ma ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Gold Film ◽  
Nanoporous Gold ◽  
High Catalytic Activity ◽  
Catalytic Reactor ◽  
Hydrogenation Reactions ◽  
Film Fabrication ◽  
Seed Mediated

A thin NPG film with a thickness of 90 nm can be prepared on various substrates to form a catalytic reactor conveniently by using seed-mediated growth. Because of the nanoporous characterization, the film exhibits high catalytic activity both for oxidative and hydrogenation reactions.

Nanoporous twinned PtPd with highly catalytic activity and stability

2015 ◽  
Vol 3 (5) ◽  
pp. 2050-2056 ◽  
Author(s):  
Xuefeng Zhang ◽  
Pengfei Guan ◽  
Lidija Malic ◽  
Michel Trudeau ◽  
Federico Rosei ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Electrochemical Oxidation ◽  
High Density ◽  
Atomic Scale ◽  
High Catalytic Activity ◽  
Twin Boundaries ◽  
Oxidation Of Methanol ◽  
Overall Performance

Nanoporous composition-tunable PtPd catalysts, combining with a high density of twin boundaries and atomic-scale Pt–Pd interfaces, can be synthesized by a simple thermal-decomposition strategy. The most optimized PtPd represents the superior overall performance high catalytic activity and stability in the electrochemical oxidation of methanol.

Catalytic Activity of Porous Pd-Ni Thin Foam towards Electrooxidation of Methanol

2013 ◽  
Vol 16 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Ming Jin ◽  
Houyi Ma
Keyword(s):  
Catalytic Activity ◽  
Methanol Oxidation ◽  
Low Cost ◽  
Nickel Content ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Oxidation Of Methanol ◽  
One Step ◽  
Dynamic Template ◽  
Electrooxidation Of Methanol

Porous Pd-Ni thin foam was fabricated by a rapid one-step electrodeposition process within hydrogen bubble dynamic template and characterized by SEM, EDS, and cyclic voltammetry. Morphology and composition of the foam can be modified significantly by applying different deposition conditions, such as concentration ratio of Pd (II) ions to Ni (II) ions in electrolytic solution and deposition time. Electrocatalytic activities of the foam towards methanol oxidation in alkaline media were investigated, which depend mainly on Pd components and its morphology. Low nickel content can assist Pd further enhance the electrocatalytic performance, particularly the tolerance to intermediates of methanol oxidation, while high nickel content brings adverse effect. The high catalytic activity and the low cost of the Pd-Ni foams enable them to be promising electrocatalysts for the oxidation of methanol in alkaline media.

Atomic origins of the high catalytic activity of nanoporous gold

2012 ◽  
Vol 11 (9) ◽  
pp. 775-780 ◽  
Author(s):  
Takeshi Fujita ◽  
Pengfei Guan ◽  
Keith McKenna ◽  
Xingyou Lang ◽  
Akihiko Hirata ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Nanoporous Gold ◽  
High Catalytic Activity

Mn-Mo-O Catalysts for Methanol Oxidation. II. Oxidation of Methanol

1992 ◽  
Vol 57 (12) ◽  
pp. 2539-2547 ◽  
Author(s):  
Krasimir Ivanov ◽  
Penka Litcheva ◽  
Dimitar Klissurski
Keyword(s):  
Catalytic Activity ◽  
Methanol Oxidation ◽  
Catalytic Properties ◽  
Effect Of Temperature ◽  
Second Step ◽  
Gas Mixture ◽  
Direct Oxidation ◽  
Step Process ◽  
Oxidation Of Methanol ◽  
Small Excess

The catalytic properties of MnMoO4-based catalysts toward methanol oxidation are investigated. The effect of temperature, flow rate and gas mixture composition on the catalytic activity is established. The highest activity and selectivity (comparable with those of industrial catalysts) of the samples obtained by precipitation in the presence of a small excess of MoO3 was found. The oxidation of methanol on MnMoO4-based catalyst is proposed to be a two-step process. The first step includes methanol interaction with Mo(VI) and reduction of Mo(VI) to Mo(V) (Mo(IV)). The second step consists in direct oxidation of the reduced molybdenum by oxygen from the alcohol-air mixture.

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