title: Synthesis, Characterization, and Catalytic Uses of Mg(3)(PO(4))(2)/MgO Systems.
abstract: Various Mg(3)(PO(4))(2)/MgO systems containing different proportions of both components were synthesized. The solids were characterized in structural terms by X-ray diffraction, thermal gravimetric analysis, and diffuse reflectance infrared spectroscopy; also, their surface properties were determined from N(2) adsorption-desorption isotherms and their chemical properties were measured with various titrants. An increasing P content in the solids was found to result in decreasing specific surface area and basicity. The solids were used as catalysts for the transformation of 2-hexanol and the alkylation of aniline with methanol. Dehydrogenation selectivity in the former was found to be highly correlated with basicity of the solid; also, alkylation activity and selectivity toward N,N'-dimethylaniline in the latter were found to increase with increasing P content. Copyright 1999 Academic Press.
authors.affiliation: Faculty of Sciences, University of Córdoba, Avenida San Alberto Magno s/n, Córdoba, E-14004, Spain
authors.initials: MA
authors.lastname: Aramendía
authors.initials: V
authors.lastname: Borau
authors.initials: C
authors.lastname: Jiménez
authors.initials: JM
authors.lastname: Marinas
authors.initials: FJ
authors.lastname: Romero