Carbon oxidation reactions could misguide the evaluation of carbon black-based oxygen-evolution electrocatalysts

2017 ◽  
Vol 53 (84) ◽  
pp. 11556-11559 ◽  
Author(s):  
Wang Wang ◽  
Jin Luo ◽  
Shengli Chen
Keyword(s):  
Carbon Black ◽  
Oxygen Evolution ◽  
Carbon Oxidation ◽  
Oxidation Reactions

Carbon may suffer severe oxidation during OER, leading to overestimation of the activity of carbon-black based electrocatalysts towards OER.

Synthesis of YFeO3-δ and LaFeO3-δ Perovskites with High Catalytic Activity in Carbon Oxidation Reactions

2021 ◽  
Vol 316 ◽  
pp. 105-109
Author(s):  
Evgeny A. Kirichenko ◽  
Pavel G. Chigrin ◽  
Anton A. Gnidenko
Keyword(s):  
Oxidation Mechanism ◽  
Soot Oxidation ◽  
Complex Oxide ◽  
Maximum Temperature ◽  
High Catalytic Activity ◽  
Carbon Oxidation ◽  
Oxidation Reactions ◽  
Oxide Systems ◽  
Reduction Of Metal Oxides ◽  
Catalytic Reaction Mechanism

YFeO3-δ (δ = 0.26) and LaFeO3-δ (δ = 0.5) perovskites with a high specific surface and oxygen non-stoichiometry was firstly synthesized by pyrolysis of polymer-salt compositions. It was shown that the catalytic oxidation of carbon in the presence of these complex oxide systems proceeds in the range of 400 - 700 °С, with a maximum temperature at 556 °С for YFeO3-δ; and 380 - 620 °С ,with a maximum temperature at 501 °С for LaFeO3-δ, in one-stage mode for both. By means of thermal analysis and diffractometry, it was shown that there is no contribution to the soot oxidation mechanism by cyclic perovskite surface transformations, due to the reduction of metal oxides by the soot and their subsequent reoxidation. It has been established that the basis of the catalytic reaction mechanism for both perovskites is the presence of oxygen vacancies on the surface of complex oxides.

Electrocatalytic Oxidative Upgrading of Biomass Platform Chemicals: From the Aspect of Reaction Mechanism

2021 ◽  
Author(s):  
Hua Zhou ◽  
Zhenhua Li ◽  
Lina Ma ◽  
Haohong Duan
Keyword(s):  
Reaction Mechanism ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Oxidation Reactions ◽  
Platform Chemicals ◽  
Wide Range

Oxidation reactions provide a wide range of important chemicals in industry; however, most of them are produced from fossil feedstocks. As a candidate of oxygen evolution reaction (OER), the electrooxidation...

Organic chemistry at anodes and photoanodes

2018 ◽  
Vol 2 (9) ◽  
pp. 1905-1927 ◽  
Author(s):  
Lacey M. Reid ◽  
Tengfei Li ◽  
Yang Cao ◽  
Curtis P. Berlinguette
Keyword(s):  
Organic Chemistry ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Generation ◽  
Oxidation Reactions ◽  
Organic Oxidation

Organic oxidation reactions can replace the anodic oxygen evolution of water splitting for clean hydrogen generation paired with high-value product.

Carbon black nanoparticles to sense algae oxygen evolution for herbicides detection: Atrazine as a case study

2020 ◽  
Vol 159 ◽  
pp. 112203 ◽  
Author(s):  
Raouia Attaallah ◽  
Amina Antonacci ◽  
Vincenzo Mazzaracchio ◽  
Danila Moscone ◽  
Giuseppe Palleschi ◽  
...  
Keyword(s):  
Carbon Black ◽  
Oxygen Evolution ◽  
Carbon Black Nanoparticles

Oxidation of Unvulcanized Rubber. Effect of Carbon Black

1954 ◽  
Vol 27 (3) ◽  
pp. 695-704
Author(s):  
F. Lyon ◽  
K. A. Burgess ◽  
C. W. Sweitzer
Keyword(s):  
Carbon Black ◽  
Natural Rubber ◽  
Benzoyl Peroxide ◽  
Volatile Content ◽  
Oxidation Reactions ◽  
Reaction Conditions ◽  
Effective Antioxidant ◽  
Opposite Behavior ◽  
Special Case

Abstract The effect of carbon black on the autocatalytic stage of oxidation of unvulcanized rubber is shown to be specific for the type of carbon, the reaction conditions, and the polymer. Carbon black is an effective antioxidant for cold rubber when the rubber is heated in air or oxygen. The effectiveness of carbon in inhibiting oxidation increases as the volatile content of the carbon increases. The special case of low loadings of highly oxidized carbons, which completely repress gelation during Banbury mixing, is of particular interest. The opposite behavior of carbon black during rubber gelation is observed when benzoyl peroxide is used as catalyst. With cold rubber, carbon black promotes gelation, while with natural rubber increased scission results. Alteration of any one of these variables produces profound changes in the course and extent of the oxidation reactions.

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