Low-temperature catalytic performance for oxidative dehydrogenation of propane on nanosized Ti(Zr)-Ni-O prepared by modified sol-gel method
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Nanosized Ti(Zr)-Ni-O prepared by modified sol-gel method exhibited good low-temperature catalytic performance: 11.5% yield with 48% selectivity towards propene and 10.3% yield are obtained on Ti-Ni-O and Zr-Ni-O, respectively, at 275 degrees C for oxidative dehydrogenation of propane to propene. SEM and XRD results indicated that the Ti(Zr)-Ni-O nanoparticles were well-distributed and of typical diameter ca. 7 mm. The lattice parameters of the obtained nanostructured Ti(Zr)-Ni-O catalysts increased distinctly and there were stronger interaction between TiO2/ZrO2 and NiO. The interaction effectively restrains the deep oxidation of propane and leads to the increasing propene selectivity. (c) 2005 Elsevier B.V. All rights reserved.