Room temperature oxidation of carbon monoxide over copper oxide catalyst

Pillai, Unnikrishnan R.; Deevi, S.C.

doi:10.1016/j.apcatb.2005.11.005

Cited by 129 publications

(84 citation statements)

References 27 publications

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“…Hence, at concentrations below this value the electrolysis shows mass diffusion problems, related to the lack of availability of cyanide ions at the electrode surface, and the oxygen evolution reaction (OER) occurs instead as a parallel side-reaction: We used data points above C C /C 0 = 0.3012 for the linear fits in Fig. 2 4 anodes results in a rapid increase in both parameters up to x = 1.0, and then, it tends to slowly increase above the spinel saturation. Close to saturation and beyond, the spinels exhibit rate constants of around two orders of magnitude higher than Co 3 O 4 , as well as efficiencies close to 100 %.…”

Section: Electrolysis Performance and Electro-oxidation Kineticsmentioning

confidence: 99%

“…Both the catalytic and stability properties of the active copper phase can be greatly influenced by their chemical environment and/or the nature of the support [1][2][3][4][5]. We previously reported the preparation and properties of Ti-supported copper-doped cobalt oxide (Cu x Co 3-x O 4 ) electrodes [40,41].…”

Section: Introductionmentioning

confidence: 99%

“…4 Several electrodes including carbon materials [23][24][25][26], stainless steel [27], bare Pt and Ni [28,29], boron-doped diamond (BDD) [30], CuO [11], and Ti-supported metal and metal oxide systems (the so-called dimensionally stable anodes, DSA) like PbO 2 [30,31], Pt [28,32], RuO 2 -TiO 2 and TaO 2 -IrO 2 [33], SnO 2 -SbO x [34,35], Co 3 O 4 [36,37], etc. were previously studied for the direct and indirect electrochemical oxidation of cyanide.…”

Section: Introductionmentioning

confidence: 99%

“…Copper and copper oxides have unique catalytic performance for several chemical processes of major industrial interest [1][2][3][4][5]. In addition, they are very attractive for multiple electrochemical processes and devices [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Berenguer

Rosa-Toro

Quijada

et al. 2017

Applied Catalysis B: Environmental

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Copper and copper oxides are well-known excellent catalysts in several chemical processes, but their low mechanical and electrochemical stability restrict their direct utilization as electrodes in electrolytic processes. In this work, the incorporation of copper into cobalt oxide (Cu x Co 3-x O 4 ) is presented as an excellent approach to obtain highly active and robust copper-based electrocatalysts. Particularly, the electrocatalytic performance of Ti-supported Cu x Co 3-x O 4 electrodes (with 0 ≤ x ≤ 1.5) has been studied for the oxidation of cyanide in alkaline media.Cyclic voltammetry and electrolysis runs show an outstanding effect of Cu on the activity, efficiency and kinetics of spinel Cu x Co 3-x O 4 electrodes for CN − electro-oxidation. Despite being active oxides with high activity towards water oxidation, copper saturated (x = 1.0) and oversaturated (x = 1.5) spinels exhibit unprecedented 100 % current efficiencies for the electrooxidation of CN − in aqueous electrolyte. In-situ surface enhanced Raman spectroscopy (SERS) reveals the specific adsorption of CN − ions on surface Cu species to be involved in the electrocatalytic oxidation mechanism. This electrocatalytic activity has been attributed to surface Cu(II) in the spinel lattice. Furthermore, the Cu x Co 3-x O 4 electrodes also display high

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Section: Electrolysis Performance and Electro-oxidation Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Berenguer

Rosa-Toro

Quijada

et al. 2017

Applied Catalysis B: Environmental

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“…Catalytic postcombustion allows oxidizing CO to CO 2 at low temperatures, and thereby is considered as an effective strategy to produce heat suitable for electric power generation [3,4]. Our new scenario related to the device miniaturization is identified recently, starting from the so-called "methane self-sustained catalytic combustion".…”

Section: Introductionmentioning

confidence: 99%

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

Bin

Wei

et al. 2015

Applied Catalysis B: Environmental

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Fabrication of CuO/TiO₂/Ti Monolithic Catalyst for Efficient and Stable CO Oxidation

Tang

Wang

Liu

et al. 2021

Adv Materials Inter

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This work reports a novel strategy to in situ grow TiO2 nanosheets on flexible Ti mesh as ideal support, and to modify CuO active components through multi‐step methods. The CuO/TiO2/Ti monolithic catalyst can realize the complete CO oxidation at 110 °C without the assistance of any noble metal and the outstanding long‐term stability can be also achieved. When using urea as deposition precipitant, CuO particle size will increase obviously with the reaction time longer than 6 h, which is adverse to the catalytic performance, showing the significant impact of CuO particle size on the CO oxidation capability. The deposition reaction carried out in different solutions is also investigated and the results show that CuO/TiO2/Ti catalysts synthesized in acid and alkaline condition exhibit superior catalytic performance owing to the high content of Cu1+/0 and adsorbed oxygen species (Oα) on surface, large surface area, and excellent redox capacity compared with that in reductive solution. More importantly, the as‐synthesized CuO/TiO2/Ti monolithic catalysts show outstanding low‐temperature performance and excellent long‐term stability, indicating the overwhelming advantage of in situ grown catalysts. It is expected that the peculiar in situ growth technology is capable of extending to monolithic catalysts for multiple applications in the future.

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Room temperature oxidation of carbon monoxide over copper oxide catalyst

Cited by 129 publications

References 27 publications

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

Fabrication of CuO/TiO₂/Ti Monolithic Catalyst for Efficient and Stable CO Oxidation

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Room temperature oxidation of carbon monoxide over copper oxide catalyst

Cited by 129 publications

References 27 publications

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Electrocatalytic oxidation of cyanide on copper-doped cobalt oxide electrodes

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

Fabrication of CuO/TiO2/Ti Monolithic Catalyst for Efficient and Stable CO Oxidation

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Fabrication of CuO/TiO₂/Ti Monolithic Catalyst for Efficient and Stable CO Oxidation