title: Hierarchical zeolites and their catalytic performance in selective oxidative processes.
abstract: Hierarchical ZSM-5 zeolites prepared using a simple alkali treatment and subsequent HCl washing are found to exhibit unprecedented catalytic activities in selective oxidation of benzyl alcohol under microwave irradiation. The metal-free zeolites promote the microwave-assisted oxidation of benzyl alcohol with hydrogen peroxide in yields ranging from 45-35 % after 5 min of reaction under mild reaction conditions as well as the epoxidation of cyclohexene to valuable products (40-60 % conversion). The hierarchically porous systems also exhibited an interesting catalytic activity in the dehydration of N,N-dimethylformamide (25-30 % conversion), representing the first example of transition-metal free catalysts in this reaction.
authors.affiliation: Departamento de Quimica Organica, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, 14014 Cordoba (Spain), Fax: (+34) 957212066.
authors.forename: Manuel
authors.initials: M
authors.lastname: Ojeda
authors.forename: Aida
authors.initials: A
authors.lastname: Grau-Atienza
authors.forename: Rafael
authors.initials: R
authors.lastname: Campos
authors.forename: Antonio A
authors.initials: AA
authors.lastname: Romero
authors.forename: Elena
authors.initials: E
authors.lastname: Serrano
authors.forename: Jose
authors.initials: J
authors.lastname: Maria Marinas
authors.forename: Javier
authors.initials: J
authors.lastname: García Martínez
authors.forename: Rafael
authors.initials: R
authors.lastname: Luque
mesh_terms: D019905:Benzyl Alcohol / Q000737:chemistry; D002384:Catalysis; D008872:Microwaves; D010084:Oxidation-Reduction; D016062:Porosity; D017641:Zeolites / Q000737:chemistry*
chemical_list: C570564:ZSM-5 zeolite; D017641:Zeolites; D019905:Benzyl Alcohol
keywords: dehydrations; mesoporous materials; microwaves; oxidations; zeolites