镍钼杂多酸制备NiMo/γ-Al2O3催化剂及硼、钴或镍改性氧化铝的影响(英文) |
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作者姓名: | Radostina PALCHEVA Luděk KALUZA Alla SPOJAKINA Květue JIRTOV Georgi TYULIEV |
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作者单位: | Institute of Catalysis,Bulgarian Academy of Sciences,G.Bonchev str.,bldg.11,1113 Sofia,Bulgaria;Institute of Chemical Process Fundamentals of the Academy of Sciences of the Czech Republic,v.v.i.,165 02 Prague 6,Czech Republic |
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基金项目: | supported by the Czech Science Foundation (P106/11/0902);Scientific Cooperation Funds of Bulgarian and Czech Academies |
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摘 要: | A hydrotreating NiMo/γ-Al2O3 catalyst(12 wt% Mo and 1.1 wt% Ni) was prepared by impregnation of the support with the Anderson-type heteropolyoxomolybdate(NH4)4Ni(OH)6Mo6O18.Before impregnation of the support,it was modified with an aqueous solution of H3BO3,Co(NO3)2,or Ni(NO3)2.The catalysts were investigated using N2 adsorption,O2 chemisorption,X-ray diffraction,UV-Vis spectroscopy,Fourier transform infrared spectroscopy,temperature-programmed reduction,temperature-programmed desorption,and X-ray photoelectron spectroscopy.The addition of Co,Ni,or B influenced the Al2O3 phase composition and gave increased catalytic activity for 1-benzothiophene hydrodesulfurization(HDS).X-ray photoelectron spectroscopy confirmed that the prior loading of Ni,Co or B increased the degree of sulfidation of the NiMo/γ-Al2O3 catalysts.The highest HDS activity was observed with the NiMo/γ-Al2O3 catalyst with prior loaded Ni.
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关 键 词: | nickel cobalt boron nickel heteropolyoxomolybdate hydrodesulfurization |
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