Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst

LIU Li-hua; LIU Shu-qun; CHAI Yong-ming; LIU Chen-guang

Volume 41 Issue 03

Mar. 2013

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LIU Li-hua, LIU Shu-qun, CHAI Yong-ming, LIU Chen-guang. Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 335-340.

Citation:

LIU Li-hua, LIU Shu-qun, CHAI Yong-ming, LIU Chen-guang. Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 335-340.

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Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst

1.
School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China;
2.
State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, China University of Petroleum (East China), Qingdao 266555, China

Received Date: 2012-08-09
Rev Recd Date: 2012-11-07
Publish Date: 2013-03-30

Abstract

Abstract

Thermal decomposition of nickel hypophosphite precursor into nickel phosphide (Ni₂P) was studied using thermogravimetry-mass spectrometry analysis. The results indicated that nickel ion (Ni²⁺) influenced the decomposition pathway of hypophosphite, because it might catalyze the reaction of hypophosphite to produce PH₃ at lower temperature. Silica-supported Ni₂P catalysts with different loadings were prepared and characterized using X-ray diffraction, N₂ adsorption-desorption, and high resolution transmission electron microscopy. It was indicated that Ni₂P was well dispersed on the support with a particle size of 5～8 nm. The catalytic performance of as-prepared catalysts was evaluated in a fixed-bed reactor for hydrodenitrogenation of quinoline. Under the reaction temperature of 360℃, hydrogen pressure of 2.0 MPa, LHSV of 2.0 h^-1, and H₂/oil volume ratio of 500:1, the conversion of quinoline over Ni₂P(20%)/SiO₂ catalyst reached 41.5%.
- nickel phosphide,
- preparation mechanism,
- thermogravimetry-mass spectrometry,
- hydrodenitrogenation

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References(15)

References

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