Effect of Pt on Hydrodesulfurization Performance of the Ni2P/MCM-41 Catalyst

doi:10.7503/cjcu20130406

Abstract

Abstract:

Nickel phosphide catalysts, Ni-P/MCM-41 adding with small amounts of Pt, were made by means of temperature programmed reduction method. The catalysts were characterized by hydrogen temperature programmed reduction(H₂-TPR), X-ray diffraction(XRD), N₂-adsorption specific surface area measurements, X-ray photoelectron spectroscopy(XPS) and transmission electron microscopy(TEM). The effects of different P/Ni molar ratio and amounts of Pt added on catalyst activity for dibenzothiophene(DBT) hydrodesulfurization(HDS) were studied. The results showed that the addition of Pt into the catalyst can decrease the reduction temperature of the Ni₂P catalysts, contribute to the formation of Ni₂P phase, inhibit reunite phenomenon and improve the HDS catalytic activity of Ni₂P catalysts. The HDS activity of the catalyst containing 0.6%Pt, with P/Ni molar ratio of 2 was found to be optimal. At reaction temperature of 340 ℃, pressure of 3.0 MPa, hydrogen/oil volume ratio of 500, and weight hourly space velocity(WHSV) of 2.0 h^-1, the conversion of dibenzothiophene HDS was 100%, and the HDS activity could remain stable within 120 h.

Key words: Hydrodesulfurization, Nickel phosphide, Pt, Ni₂P/MCM-41 catalyst, Dibenzothiophene

CLC Number:

O643.3

TrendMD:

SONG Hua, XU Xiao-Wei, DAI Min, SONG Hua-Lin. Effect of Pt on Hydrodesulfurization Performance of the Ni₂P/MCM-41 Catalyst[J]. Chem. J. Chinese Universities, 2013, 34(11): 2609.

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Effect of Pt on Hydrodesulfurization Performance of the Ni₂P/MCM-41 Catalyst

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