Abstract
A VPO catalyst prepared in an organic medium has been studied by in situ laser Raman spectroscopy for n-butane oxidation to maleic anhydride. Data could be obtained at low laser power and brief collection times. Raman characterization during continuous flow (steady-state) studies revealed that (VO)2P2O7 was present. Sequential oxidizing (10% O2 in N2) and reducing (2% n-butane in N2) conditions were explored at 350°C and 400°C. These cycling (unsteady-state) operations revealed that formation of V(5+) phases was enhanced during oxidizing conditions. The intensity of Raman bands due to (VO)2P2O7 increased during reducing conditions.
Original language | English (US) |
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Pages (from-to) | 594-599 |
Number of pages | 6 |
Journal | Canadian Journal of Chemical Engineering |
Volume | 74 |
Issue number | 5 |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
Keywords
- In situ Raman spectroscopy
- Selective oxidation
ASJC Scopus subject areas
- Chemical Engineering(all)