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Hierarchical Zeolites and their Catalytic Performance in Selective Oxidative Processes
Author(s) -
Ojeda Manuel,
GrauAtienza Aida,
Campos Rafael,
Romero Antonio A.,
Serrano Elena,
Maria Marinas Jose,
García Martínez Javier,
Luque Rafael
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201500124
Subject(s) - catalysis , hydrogen peroxide , chemistry , benzyl alcohol , dimethylformamide , transition metal , alcohol oxidation , alcohol , inorganic chemistry , zeolite , selectivity , zsm 5 , heterogeneous catalysis , cyclohexene , organic chemistry , solvent
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.