کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57072 47106 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of nickel phosphide/SBA-15/cordierite monolithic catalysts and catalytic activity for hydrodesulfurization of dibenzothiophene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preparation of nickel phosphide/SBA-15/cordierite monolithic catalysts and catalytic activity for hydrodesulfurization of dibenzothiophene
چکیده انگلیسی

A series of nickel phosphide/SBA-15/cordierite monolithic catalysts with Ni contents from 2.5 wt.% to 12.4 wt.% and initial P/Ni molar ratio of 1/2 were prepared and their activity for the hydrodesufurization (HDS) of dibenzothiophene (DBT) was evaluated. The structure of the catalysts was investigated by X-ray diffraction (XRD), N2 adsorption–desorption isotherms and scanning electron microscope (SEM). The results showed that the nickel phosphides phase had not been observed in the monolithic catalysts when Ni content was less than 7.4 wt.%. The Ni2P phase and Ni12P5 phase were found when Ni content was from 9.9 wt.% to 12.4 wt.%. The DBT conversion can reach 99.2% at 380 °C when Ni content was 9.9 wt.%. The activity of the monolithic catalyst was as good as that for the nickel phosphide/SBA-15 powder catalyst at 380 °C for the HDS of DBT, which indicated that there was no diffusive restriction on monolithic catalysts. Biphenyl (BP) selectivity over the monolithic catalysts was evidently higher than that for the nickel phosphide/SBA-15 powder catalyst when the temperature was over 320 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 147, Supplement, September 2009, Pages S66–S70
نویسندگان
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