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  • 1 College of Chemistry, Jilin University, Changchun 130023, People's Republic of China
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Abstract

Keggin-type phosphomolybdic acids with molybdenum partially substituted by vanadium and protons completely substituted by tellurium have been prepared, characterized and tested as catalysts in the partial oxidation of isobutane into methacrolein (MAL) and methacrylic acid (MAA). Characterization results showed that the structures of Te(1.5+0.5x)PMo12−xVxOn (x = 1–3) with Mo partially substituted by V can basically be preserved, while the XRD pattern of Te1.5PMo12On was different from H3PMo12O40. It is found that Te element induced a positive effect on the selectivity to MAL with slightly negative effect on the activity and selectivity to MAA.

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