Abstract
Oxidation of cyelopentadiene over vanadium oxide and its mixed oxides has been studied and correlated to changes of vanadium valence. There are various organic products containing one or two oxygen atoms besides maleic anhydride. The catalyst V-Ag-O shows the highest selectivity to maleic anhydride. The rusults indicate that the reaction follows the redox mechanism. The additives are thought to moderate the tendency of an oxide to donate its oxygen.
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Abbreviations
- AV:
-
average of vanadium valence in catalyst
- C:
-
conversion moles of CPD reacted/moles of CPD in feed × 100(%)
- Fc :
-
fraction of CPD unconverted
- k, k′:
-
reaction rate constants
- n:
-
order of reaction
- Pc :
-
partial pressure of CPD
- re :
-
reaction rate of CPD
- S:
-
selectivity calculated on carbon atom basis(% )
- S MA :
-
selectivity to MA, moles of MA produced/mole of CPD reacted × 4/5 × 100 (%)
- T:
-
time factor, weight of Cat./ feeding rate (g sec mole−1
- [V5+ :
-
concentration of V5+ in catalyst (mmole/g)
- Y MA :
-
yield of MA, weight of MA produced/weight of CPD in feed × 100 (%)
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Jun, KW., Chang, YK., Jung, SJ. et al. Oxidation of cyclopentadiene over vanadium oxide and its mixed oxides. Korean J. Chem. Eng. 3, 135–139 (1986). https://doi.org/10.1007/BF02705025
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DOI: https://doi.org/10.1007/BF02705025