Abstract
Molybdenum oxides (MoOx) have shown interesting catalytic and electronic properties for various applications in recent years. However, they are typically synthesized via hydrothermal and solvothermal methods that have a low production yield of less than 1g per batch. In this study, we developed a large-scale production and continuous process of MoO3 particles by utilizing an ultrasonic spray pyrolysis technology that allows the production rate of MoO3 particles at 4.5g/h. The size and phase structure of the MoO3 particles were significantly affected by the pyrolysis temperature and concentration of precursor solution used. The as-synthesized MoO3 particles were reduced to MoO2 particles by H2 treatment at 700°C for 3h. Partial oxidation reaction was studied to test the catalytic performance of both the MoO3 and MoO2 particles using n-dodecane as a fuel. The MoO3 particles showed 45.3% of H2 yield and 74.1% of carbon conversion. After reduction, however, the MoO2 particles showed 60.8% of H2 yield and 87.4% of carbon conversion, which shows higher performance than that of commercial MoO2.
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