Sulfatization of vanadium pentoxide in equilibrium gaseous mixtures containing SO{sub 2}, SO{sub 3}, and O{sub 2}
- Mendeleev Univ. of Chemical Engineering, Moscow (Russian Federation)
The sulfatization of V{sub 2}O{sub 5} supported on SiO{sub 2} and SiO{sub 2} + MgSO{sub 4} carriers in equilibrium gaseous SO{sub 2}-SO{sub 3}-O{sub 2}-N{sub 2} mixtures at P{sub SO{sub 3}} = 0.8 - 33 kPa and T {>=} 673 K is studied using a flow thermogravimetric setup. Sulfatization is accompanied by V{sub 2}O{sub 5} reduction and production of vanadyle sulfate VOSO{sub 4}, which can decay completely or partially, depending on the conditions. This is supported by hysteresis observed in the course of the sulfatization and desulfatization of the catalyst. The experimental data indicates the formation of surface sulfates with various formations heats, which is determined by the energetic heterogeneity of the surface.
- OSTI ID:
- 62482
- Journal Information:
- Kinetics and Catalysis, Vol. 35, Issue 4; Other Information: PBD: Jul-Aug 1994; TN: Translated from Kinetika i Kataliz; 35: No. 4, 631-633(1994)
- Country of Publication:
- United States
- Language:
- English
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