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- W2350236015 abstract "The catalyst precursors of B-Ni_2P/SBA-15 were synthesized by co-impregnation using (NH_4)_2HPO_4 as the source of phosphorus,Ni(NO)_3 as the source of nickel and H_3BO_3 as the source of boron.The B-Ni_2P/SBA-15 catalysts with an initial P/Ni molar ratio of 0.8 and a boron content from 0.35%to 2.10%(w) were prepared by temperature-programmed reduction in a H_2 flow.The structure of the catalysts was characterized by X-ray diffraction(XRD),N_2 adsorption-desorption,transmission electron microscopy (TEM) and NH_3 temperature-programmed desorption(NH_3-TPD).The catalytic performances of hydrodesulfurization(HDS) were evaluated in a fixed-bed microreactor using dibenzothiophene(DBT) as a model compound.The results showed that the B-Ni_2P/SBA-15 catalysts still retained mesoporous structure.The Ni_2P phase was mainly active phases in all the catalysts.The proper addition of boron reduced the Ni_2P active phases but increased the specific surface area of the catalysts.The amount of acid in B-Ni_2P/SBA-15 also increased with addition of boron.When the reaction temperature was increased from 300 to 360℃,the HDS conversion of DBT over the catalyst clearly improved with an increase in the content of boron.The B-Ni_2P/SBA-15 catalyst with a boron content of 1.40%(w) had the best catalytic activity.The mechanism of the HDS of DBT consisted of main direct desulfurization(DDS) over the B-Ni_2P/ SBA-15 catalysts." @default.
- W2350236015 created "2016-06-24" @default.
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- W2350236015 date "2011-01-01" @default.
- W2350236015 modified "2023-09-25" @default.
- W2350236015 title "Effect of Boron Promoter on the Structure and Hydrodesulfurization Activity of Ni_2P/SBA-15 Catalysts" @default.
- W2350236015 hasPublicationYear "2011" @default.
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