Synthesis, Characterization, and Catalytic Uses of Mg3(PO4)2/MgO Systems

✍ Scribed by Marı́a Angeles Aramendı́a; Victoriano Borau; César Jiménez; José Marı́a Marinas; Francisco José Romero

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 127 KB
• Volume: 219
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1999.6472

✦ Synopsis

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 adsorptiondesorption 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.