Preparation, characterization and hydrodesulfurization performances of Co-Ni2P/SBA-15 catalysts
作者： Zhou-jun Wang , Pingyi Wu , Ling Lan , Kunhong Liu , Yaqiong Hu
DOI: 10.1016/S2095-4956(15)60299-6
关键词:
摘要: A series of Co-Ni2P/SBA-15 catalysts with various Co contents, Ni2P contents and P/Ni molar ratios were prepared by impregnating nickel nitrate, diammonium hydrogen phosphate, then cobalt nitrate into SBA-15 support followed temperature-programmed reduction in a H2 flow. The catalyst structure was characterized X-ray diffraction (XRD), high resolution-transmission electron microscopy (HR-TEM) N2 adsorption-desorption techniques their catalytic performance the hydrodesulfurization (HDS) dibenzothiophene (DBT) evaluated. effects on HDS DBT over investigated. results indicated that mesoporous mainly maintained phosphides well dispersed all catalysts. 4Co-25Ni2P/SBA-15 (P/Ni = 0.8) 4 wt% 25 wt%, respectively, ratio 0.8 showed highest for DBT. Under reaction conditions 380°C 3.0 MPa, conversion can reach 99.62%. proceeded via direct desulfurization (DDS) pathway biphenyl (BP) as dominant product BP selectivity slightly enhanced after introduction promoters.
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