Selective oxidation of n-butane to maleic anhydride under oxygen-deficient conditions over V-P-O mixed oxides

Bosch, H. and Bruggink, A.A. and Ross, J.R.H. (1987) Selective oxidation of n-butane to maleic anhydride under oxygen-deficient conditions over V-P-O mixed oxides. Applied Catalysis, 31 (2). pp. 323-337. ISSN 0166-9834

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Abstract:	The selective oxidation of n-butane to maleic anhydride over V-P-O mixed oxides was studied under oxygen deficient conditions. The mixed oxides were prepared with P/V atomic ratios ranging from 0.7 to 1.0. Catalysts with P/V <1.0 did not show any selectivity to maleic anhydride formation, regardless of whether or not (VO)2P2O7 was present. For catalysts with P/V = 1.0, containing (VO)2P2O7 and/or the so-called. β-phase, the selectivity was strongly influenced by the actual surface V5+/V4+ ratio. This ratio is determined by the temperature, the crystal phases present in the catalyst and the composition of the gas mixture. Optimal selectivity was obtained at 425°C with 15% butane in air and a butane/oxygen ratio of 0.9.
Item Type:	Article
Copyright:	© 1987 Elsevier Science
Link to this item:	http://purl.utwente.nl/publications/69926
Official URL:	http://dx.doi.org/10.1016/S0166-9834(00)80700-9
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