A novel synthesis of Ni2P catalysts by reducing nickel sulfide at low temperature

作者：Song, Limin^*; Zhang, Shujuan; Wu, Xiaoqing; Li, Yanbo

来源：Vacuum, 2015, 111: 68-72.

DOI：10.1016/j.vacuum.2014.09.022

• Nickel phosphide
• Nickel sulfide
• Sodium hypophosphite
• Hydrodesulfurization

The controlled synthesis of catalyst Ni2P/SiO2 was achieved using NiS as a precursor. NiS was reduced by NaH2PO2 center dot H2O at 350 degrees C for 1 h to produce Ni2P/SiO2. The catalyst was characterized using X-ray powder diffraction, transmission electron microscopy (TEM), inductively coupled plasma atomic emission spectroscopy, N-2 adsorption specific surface area measurement, and thermal gravimetric analysis. The TEM showed that the Ni2P particles in size of about 20-30 nm were highly dispersed on the carrier SiO2. The as-prepared Ni2P/SiO2 contained a small amount of sulphides. The hydrodesulfurization activity of Ni2P/SiO2 (10 wt.% Ni) was studied for dibenzothiophene at 320 degrees C. The as-obtained Ni2P/SiO2 using NiS as a precursor was more active than Ni2P/SiO2 synthesized with NiO as a precursor via the same route. We suppose that additional sulphide is responsible for the improved activity.

• 出版日期2015-1
• 单位天津科技大学; 天津工业大学