关键词: MoVTeNb, 焙烧条件, 丙烷, 选择氧化, 丙烯酸

Abstract: Mo1V0.25Te0.13Nb0.12Ox catalyst was prepared，and the effect of calcination conditions (calcination mode，calcination atmosphere and calcination temperature) of the catalysts on propane oxidation to acrylic acid reaction was studied. Results suggest that two-period intermittent calcination is superior to continuous calcination as the resulting catalyst has a better catalytic effect. Suitable pre-calcination temperature is conducive to the removal of volatile substances and the chemical combined water，and it is also conducive to avoid the transition of active component into unfavorable phase by oxidation. Calcination in inert atmosphere is better than that in a weak oxidizing atmosphere as the catalyst has a better catalytic effect. The propane conversion and acrylic acid yield increase with the calcination temperature at first but decrease while the temperature increases further，which have maximum values at 600 ℃。

Key words: MoVTeNb, calcination condition, propane, selective oxidation, acrylic acid