Sol-gel Synthesis of Vanadium Phosphorus Oxides as Catalyst for the Partial Oxidation of Butane to Maleic Anhydride
نویسندگان
چکیده
The preparation of vanadyl pyrophosphate (VPO) strongly influences their catalytic activity in partial oxidation of butane to maleic anhydride. The characteristics of VOHPO4•0.5H2O, (called “the precursor” in this paper) are strongly influenced by the reagents, the ratio of phosphorous to vanadium, the nature of the solvent and the conditions of the reduction step during the preparation. Synhesis conditions can control the characteristics of the precursor and thus the catalytic behavior of (VO)2P2O7, which will be referred to in this paper as the active phase.
منابع مشابه
Partial Oxidation of n-Butane over a Sol-Gel Prepared Vanadium Phosphorous Oxide
Vanadium phosphorous oxide (VPO) is traditionally manufactured from solid vanadium oxides by synthesizing VOHPO4·0.5H2O (the precursor) followed by in situ activation to produce (VO)2P2O7 (the active phase). This paper discusses an alternative synthesis method based on sol-gel techniques. Vanadium (V) triisopropoxide oxide was reacted with ortho-phosphoric acid in an aprotic solvent. The produc...
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