Abstract
The hydroprocessing of fuels containing relatively large amounts of organonitrogen compounds becomes increasingly important in the upgrading of hydrocarbon fuels. Therefore, to investigate the removal of organonitrogen compounds, the hydrodenitrogenation of pyridine dissolved in n-heplane was studied over sulfided Ni-Mo/u-Al2O3 catalysts in the range of lemperature between 513 K and 633 K and pressure between 30 bar and 50 bar in a fixed bed flow reactor. Pyridine conversion increased with the increased temperature and pressure, and the piperidine formation was found to be irreversible. Pyridine concentration reached a maximum at about 573 K and the apparent reaction order was found to be one with respect to pyridine.
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Abbreviations
- AM:
-
ammonium molybdate
- F:
-
feed rate, ml/hr
- k:
-
rate constant, gmole/g of cat. hr
- n:
-
reaction order
- NN:
-
nickel nitrate
- PH :
-
partial pressure of hydrogen, bar
- P oY :
-
initial partial pressure of pyridine, bar
- PY :
-
partial pressure of pyridine, bar
- r:
-
reaction rate, gmole/g.hr
- t:
-
time, hr
- W:
-
catalyst weight, g
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Kim, K.L., Chung, N.H. & Choi, K.S. A study of hydrodenitrogenation of pyridine catalyzed by sulfided Ni-Mo/γ-Al2O3 . Korean J. Chem. Eng. 4, 61–65 (1987). https://doi.org/10.1007/BF02698100
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DOI: https://doi.org/10.1007/BF02698100