The impact of preparation methods on the structure and catalytic performance of NiMo04 for oxidative dehydrogenation of propane.

The sol-gel and hydrothermal methods were adopted to synthesize β-NiMo04 and a-NiMo04 respectively, which were characterized by XRD and H2-TPR. Their catalytic performances for oxidative dehydrogenation of propane were tested. The results indicated that the crystal structure of catalysts obtained from different preparation methods was different; thereby there was a great variation in the catalytic performance. The β-NiMo04 catalyst prepared by the sol-gel method exhibited the better catalytic performance for oxidative dehydrogenation of propane under the low temperature, over which the propylene yield can attain 9.47% at 450°C, than that of a-NiMo04 prepared by the hydrothermal method. [ABSTRACT FROM AUTHOR]