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(3): 335-340. shu

Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst

1.
1. School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China;

Corresponding author: LIU Li-hua,
Received Date: 9 August 2012
Available Online: 7 November 2012
Fund Project: 国家重点基础研究发展规划(973计划,2010CB226905) (973计划,2010CB226905)安徽省教育厅自然科学基金(KJ2013B243) (KJ2013B243)淮北师范大学青年科研项目(2012xq47)。 (2012xq47)

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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沈阳化工大学材料科学与工程学院沈阳 110142