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The effects of chemical composition and preparation conditions, especially calcination atmosphere, water con- tent and oxygen content on the catalytic performances of MoVTeNbO mixed oxide catalyst system for the selective oxida- tion of propane to acrylic acid have been investigated and discussed. Among the catalysts studied, the Mo1.0V0.3Te0.23Nb0.12O catalyst calcined in inert atmosphere under a temperature of 600°C showed the best performance in terms of propane conversion and selectivity to acrylic acid. The results revealed that proper chemical composition, calci- nation atmosphere, water content and oxygen content affected greatly the catalysts in many ways including structure, chemical composition, which are related to their catalytic performances, the 78% propane conversion and 61% one-pass yield to acrylic acid can be achieved at the same time.

Effect of Preparation Condition on the Performance of MoVTeNbO Catalyst Materials for Selective Oxidation of Propane into Acrylic Acid