Carbon Nanotube/Graphite Mixtures Used as Cavity Cell Macroelectrodes and their Unexpected Behavior Towards Benzyl Bromide Electroreduction.

Autor: Santos de Oliveira, Luciana, Navarro, Marcelo, Tavares Ribeiro, Rogério, Lago Falcão, Eduardo Henrique
Zdroj: ChemistrySelect; 9/11/2017, Vol. 2 Issue 26, p7771-7775, 5p
Abstrakt: Abstract: Powder macroelectrodes were prepared by mixing carbon nanotubes (CNT) and graphite in different ratios, and evaluated as electron transfer medium for the benzyl bromide electroreduction. 1,2‐Diphenylethane (DPE) (1‐electron process) was favored, instead of toluene (2‐electron process), for all CNT:graphite mass ratios, while pure graphite or CNT favored toluene as major product. The 3:7 CNT:graphite mass ratio gave the best result, furnishing 70 % yield of DPE. Cyclic voltammetry showed a cathodic shift for the benzyl bromide reduction potential by using CNT:graphite electrode composition, favoring the 1‐electron process products during the electrolyses, and corroborating the results observed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index