Results 251 to 260 of about 28,205 (307)

Ketal Protection of Glycerol for Selective Electrosynthesis of Glyceric Acid in Highly Alkaline Media

Angewandte Chemie, EarlyView.
Using a ketal‐protected glycerol derivative (solketal) as the oxidation substrate enables site‐selective electrooxidation that suppresses C–C cleavage on non‐noble catalysts. Highly alkaline conditions promote reactive solketal alkoxide formation, weaken the Cα─H bond to facilitate dehydrogenation, and buffer local acidification, enabling a record‐high
Jiamin Wang, Baokun Zhang, Kanglei Pang, Egon Campos dos Santos, Hong Liu, Mats Johnsson, Xiaowen Yu   +6 more
wiley   +1 more source

Positive Electrochemical Potentials Induce Enhanced Chemoselectivity and Activity in the Thermocatalytic Hydrogenation of 3‐Nitrostyrene

Angewandte Chemie, EarlyView.
Induced by positive electrochemical potentials, thermocatalytic hydrogenation (TCH) of 3‐nitrostyrene with H2 delivers one single product with six‐fold enhanced yield. The enhanced selectivity and activity originate from changes in the adsorption geometry of 3‐nitrostyrene and in the surface concentration of 3‐nitrostyrene and hydrogen via a concurrent
Yunfei Jiao, Martina A. Pogany, Murielle F. Delley   +2 more
wiley   +1 more source

Polarity‐Directed Synthesis of an Exfoliable 2D Polyoxometalate‐Based Metal‐Organic Framework for Noble Metal‐Free Alkyne Transfer Semi‐Hydrogenation

Angewandte Chemie, EarlyView.
Exfoliation of 2D nanosheets based on polyoxometalate metal‐organic frameworks (POMOFs) gives access to nanostructures with selective catalytic reactivity for the alkyne transfer semi‐hydrogenation which outperform the bulk references and rival some classical noble metal‐based catalysts.
Xusheng Dai, Yalei Zhang, Yue Zhao, Shujun Li, Nana Ma, Qingchun Xia, Yiwei Liu, Rongji Liu, Shuxia Liu, Xuenian Chen, Carsten Streb   +10 more
wiley   +1 more source

Fabrication of novel nitrogen-doped δ-Al₂O₃ NPs: characterization and performance evaluation for electrocatalytic degradation of organic dyes. [PDF]

Nanoscale Adv
Kamoun EA, Mosleh AT, Hossni HA, Yousef TA, Ragab NAM, Zahran HY, Ganesh V, Hafez M, Yahia IS, Fareed SA.   +9 more
europepmc   +1 more source

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Aniline degradation by electrocatalytic oxidation

Chemosphere, 2003
The degradation of aniline solution in alkaline medium of pH 11.0 by electrocatalytic oxidation has been studied using an electrochemical reactor containing a SnO(2)-Sb(2)O(3)-PtO anode and a Ti cathode, both of 54 cm(2) area. Hydroxyl radicals (HO(z.rad;)) are produced at the anode, being tested with the trace catcher salicylic acid and phenol by ...
Yijiu Li, Yaming Ni
exaly   +3 more sources

Electrocatalytic Oxidation of Glycerol on Platinum

The Journal of Physical Chemistry C, 2018
Glycerol, a surplus byproduct of biodiesel production, is a promising energy source for fuel cells. However, the low selectivity toward the complete-oxidation product, carbon dioxide (CO2), hinders the electro-oxidation of glycerol. In this work, we combine spectro-electrochemical studies of extended surfaces using sum frequency generation and product ...
Yifan Liu, Wenjian Yu, David Raciti, David H. Gracias, Chao Wang   +4 more
openaire   +2 more sources

Nanocatalysts for Electrocatalytic Oxidation of Ethanol

ChemSusChem, 2019
AbstractThe use of ethanol as a fuel in direct alcohol fuel cells depends not only on its ease of production from renewable sources, but also on overcoming the challenges of storage and transportation. In an ethanol‐based fuel cell, highly active electrocatalysts are required to break the C−C bond in ethanol for its complete oxidation at lower ...
Juan Bai, Danye Liu, Jun Yang, Yu Chen
openaire   +3 more sources

Electrocatalytic oxidation of ?-tyrosine by a nitroxide

Talanta, 2001
The electrochemistry of L-tyrosine was studied by cyclic voltammetry at a glassy carbon electrode. Although L-tyrosine itself showed very poor electrochemical response, the response could be greatly enhanced by using 4-hydroxy-2,2,6,6-tetramethylpiperidinyl-1-oxy (HO-TEMPO) as a mediator that enables a sensitive determination of the substrate.
X L, Wen, Y, Jia, L, Yang, Z L, Liu
openaire   +2 more sources

Electrocatalytic Oxidation of Cellulose at a Gold Electrode

ChemSusChem, 2014
AbstractThe electrochemical properties of cellulose dissolved in NaOH solution at a Au surface were investigated by cyclic voltammetry, FTIR spectroscopy, the electrochemical quartz crystal microbalance technique, and electrochemical impedance spectroscopy. The reaction products were characterized by SEM, TEM, and FTIR and NMR spectroscopy. The results
Ivaska Ari, Bobacka Johan, Akieh-Pirkanniemi Marceline, Latonen Rose-Marie, Sugano Yasuhito   +4 more
openaire   +2 more sources

Electrocatalytical oxidation of arsenite by reduced graphene oxide via in-situ electrocatalytic generation of H2O2

Environmental Pollution, 2019
Preoxidation of As(III) to As(V) is required for the efficient removal of total arsenic in the treatment of wastewater. In this work, the electro-Fenton oxidation of As(III) with a high efficiency was successfully achieved by using the system of the stainless steel net (SSN) coating with reduced graphene oxide (RGO@SSN) as the cathode and stainless ...
Xuheng, Li, Feng, Liu, Weifang, Zhang, Hongbo, Lu, Jing, Zhang   +4 more
openaire   +2 more sources