Preparation and Characterization of Ni2P/SiO2-Al2O3 and Its Catalytic Performance for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene

Abstract

Abstract: A series of SiO2-Al2O3 composite supports were prepared by simple hydrolysis and deposition of Na2SiO3•9H2O on macropore Al2O3. Ni2P/SiO2-Al2O3 catalysts were prepared by treating amorphous Ni alloys supported on SiO2-Al2O3 with phosphine at a low temperature. The as-obtained samples were characterized by X-ray diffraction, infrared spectroscopy, scanning electron microscopy, inductively coupled plasma-atomic emission spectroscopy, and N2 adsorption. The presence of SiO2 decreased the amount of four-complexing Al3+ ions on the surface of Al2O3 and weakened the strong interaction between the Al2O3 support and Ni2P. The SiO2-Al2O3 composite support still kept the pore structure of macropore Al2O3 when the content of SiO2 was proper in the composite supports. Ni2P/SiO2-Al2O3 catalysts showed good activity for the hydrodesulfurization of 4,6-dimethyl-dibenzothiophene under the experimental conditions.

Key words: nickel phosphide, silica, macropore alumina, composite support, 4,6-dimethyldibenzothiophene, hydrodesulfurization

SONG Limin, LI Wei*, ZHANG Minghui, TAO Keyi. Preparation and Characterization of Ni2P/SiO2-Al2O3 and Its Catalytic Performance for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene[J]. Chinese Journal of Catalysis, 2007, 28(2): 143-147.

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Preparation and Characterization of Ni2P/SiO2-Al2O3 and Its Catalytic Performance for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene

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