Effect of acidity and hydrogenation ability on the hydrodenitrogenation performance of NiW/Al<sub>2</sub>O<sub>3</sub> catalyst

HAN Lu; ZHOU Ya-song; WEI Qiang; LUO Yi; WANG Jing-yu

Volume 42 Issue 10

Oct. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(10): 1233-1239

HAN Lu, ZHOU Ya-song, WEI Qiang, LUO Yi, WANG Jing-yu. Effect of acidity and hydrogenation ability on the hydrodenitrogenation performance of NiW/Al2O3 catalyst[J]. Journal of Fuel Chemistry and Technology, 2014, 42(10): 1233-1239.

Citation:

HAN Lu, ZHOU Ya-song, WEI Qiang, LUO Yi, WANG Jing-yu. Effect of acidity and hydrogenation ability on the hydrodenitrogenation performance of NiW/Al₂O₃ catalyst[J]. Journal of Fuel Chemistry and Technology, 2014, 42(10): 1233-1239.

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Effect of acidity and hydrogenation ability on the hydrodenitrogenation performance of NiW/Al₂O₃ catalyst

State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China

Received Date: 2014-03-25
Rev Recd Date: 2014-05-05
Publish Date: 2014-10-30

Abstract

Abstract

NiW/Al₂O₃ catalysts for the hydrodenitrogenation of heavy oil were prepared by nickel-tungstate active metals located on Al₂O₃ with wetness impregnation. The effect of boric acid on the acidity and the effect of citric acid on the hydrogenation ability were studied. The results of NH₃-TPD, HRTEM, H₂-TPR and XPS showed that the addition of boric acid increased the proportion of strong and medium acid. The strong interaction between the support and metal has been weakened. Citric acid achieved moderate length of Ni-W-S active phases, increased the dispersion and the sulfidation degree of the metal on catalysts surface. NiW catalyst modified with boron acid and citric acid had outstanding HDN performance for Venezuela deasphalted oil, promoted the hydrogenation of aromatics and resin. It also had strong HDN abilities to basic and non-basic nitrogen compounds. The catalyst showed outstanding HDN performance of heavy oil.
- heavy oil,
- hydrotreatment,
- catalyst,
- hydrogenolysis,
- hydrogenation

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References(19)

References

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