Title: Comparison of hydrodesulfurization performances of Ni_2P,MoP and WP supported by MCM-41
Abstract: MCM-41-supported Ni2P,MoP and WP catalysts were prepared by an in-situ temperature programmed reduction method from their oxide precursors and characterized by XRD and CO chemisorption.The hydrodesulfurization(HDS)performances of the three catalysts were evaluated using a model fuel containing 0.8% dibenzothionphene(DBT)in decalin.The results indicate that MCM-41-supported Ni2P catalyst shows the highest HDS performance,exhibiting the highest HDS reaction rate constant and TOF,while WP/MCM-41is the lowest.The HDS reaction routes over the three catalysts exhibit different trends towards different temperatures.The presence of H2S in the feed significantly suppresses the hydrogenation pathway of Ni2P/MCM-41,and leads to a drastic decrease in the HDS activity.MoP/MCM-41exhibits better sulfur resistance compared with other catalysts.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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