title: Solvent-induced textural changes of as-synthesized mesoporous alumina, as reported by spin probe electron spin resonance spectroscopy.
abstract: The effect of solvent used during the synthesis and postsynthesis treatment on textural properties of organized mesoporous aluminas was investigated and related to the behavior of spin probes studied by electron spin resonance (ESR) spectroscopy. It was found that the structure of surfactant aggregates serving in the as-synthesized precipitates as templates could be easily modified by treatment with different solvents. This treatment induces corresponding variations in surface areas, mesopore volumes, and mesopore diameters of the final products. The ESR spectrum of 5-doxyl stearic acid spin probe properly reflects the changes in template structure based on changes of the solvent used and represents an early indicator of the corresponding textural modifications of the mesoporous alumina.
authors.affiliation: I.G. Murgulescu Institute of Physical Chemistry, Romanian Academy, Spl. Independentei 202, 060021 Bucharest, Romania.
authors.forename: Agneta
authors.initials: A
authors.lastname: Caragheorgheopol
authors.forename: Horia
authors.initials: H
authors.lastname: Caldararu
authors.forename: Gabriela
authors.initials: G
authors.lastname: Ionita
authors.forename: Florenta
authors.initials: F
authors.lastname: Savonea
authors.forename: Nadezda
authors.initials: N
authors.lastname: Zilková
authors.forename: Arnost
authors.initials: A
authors.lastname: Zukal
authors.forename: Jirí
authors.initials: J
authors.lastname: Cejka