Pt掺杂Ni/NiAlOx催化菲加氢饱和反应性能研究

Journal of Fuel Chemistry and Technology(2022)

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Abstract
本研究选取菲为模型化合物,以强化芳烃吸附为目标,采用等体积浸渍法制备了系列Pt-Ni/NiAlOx催化剂,系统考察了Pt掺杂量对催化剂结构和菲加氢饱和性能的影响.结果表明,当反应温度300℃、氢气压力5 MPa、重时空速52 h?1时,相比Ni/NiAlOx催化剂,掺杂0.5%Pt的0.5Pt-Ni/NiAlOx催化剂上全氢菲选择性在反应8 h后由40%提升至67%,且表观反应速率和转化频率分别由1.53×10?3 mol·kg?1·s?1和14.64×10?3 s?1提升至1.81×10?3 mol·kg?1·s?1和22.16×10?3 s?1.这主要归因于金属Pt适宜的掺杂量提高了金属Ni缺电子结构的稳定性,促进芳烃吸附,提升了菲加氢饱和性能.
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Key words
phenanthrene,hydrogenation saturation,Pt-Ni bimetal,Pt loadings
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