RT journal article
T1 Carbon integral honeycomb monoliths as support of copper catalysts in the Kharasch–Sosnovsky oxidation of cyclohexene
A1 García-Cabeza, A.L.
A1 Marín Barrios, Rubén
A1 González Leal, Juan María
A1 Vidal Muñoz, Hilario
A1 Gatica Casas, José Manuel
A1 Yeste Sigüenza, María del Pilar
A1 Cifredo Chacón, Gustavo Aurelio
A1 Blanco Montilla, Ginesa
A1 Guerra Martínez, Francisco Miguel
A1 Cifredo Chacón, Gustavo Aurelio
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
A2 Física de la Materia Condensada
A2 Química Orgánica
K1 copper catalysts
K1 carbon honeycomb monoliths
K1 allylic oxidation
K1 kharasch-sosnovsky
K1 cyclohexene
AB Carbon integral honeycomb monoliths prepared from a natural coal were employed as support of copper catalysts for organic synthetic purposes. In particular good to excellent yields (60–100% as function of the carboxylic acid employed) were obtained in the preparation of allylic esters by the Kharasch–Sosnovsky oxidation of cyclohexene. Different characterization techniques such as chemical analysis by Inductively Coupled Plasma Spectroscopy, nitrogen physisorption, X-ray Diffraction with Rietveld analysis, X-ray Photoelectron and Raman Spectroscopies, Temperature-Programmed Reduction and Scanning Electron Microscopy allowed finding that key parameters such as textural properties, degree of copper precursor decomposition and active phase homogeneity and dispersion can be modulated as function of a simple synthetic variable: the method used to dry the monoliths after impregnation with the metal precursor, either conventional or using microwaves. The results obtained allow understanding the key role of the nature and chemical surrounding (O2  anions or OH groups) of Cu2+ ions in the catalytic activity in the reaction investigated as well as the operating deactivation mechanisms. The use of the structured catalysts here proposed also opens up an interesting alternative to homogeneous catalysis in the field of organic synthesis.
PB Chemical Engineering Journal
YR 2016
FD 2016-01
LK http://hdl.handle.net/10498/20360
UL http://hdl.handle.net/10498/20360
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026