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考察了Ti O2-Zr O2载体制备方法对Ni-WO3/Ti O2-Zr O2催化正庚烷异构化反应性能的影响.通过BET、XRD、SEM和NH3-TPD的表征结果表明,以模板-溶胶-凝胶法制备Ti O2-Zr O2载体时,Ni-WO3/Ti O2-Zr O2催化剂晶相结晶度较好,具有较适宜的表面酸性和比表面积,从而在正庚烷异构化反应中表现出较高的催化活性和选择性,正庚烷的转化率和异庚烷的选择性分别为72.62%和80.81%.实验结果还表明,Ti O2-Zr O2比Zr O2、Si O2-Zr O2和Al2O3-Zr O2更适宜作为载体制备催化剂应用于正庚烷异构化的反应中.
The effect of Ti O2-Zr O2 support on the catalytic performance of Ni-WO3 / Ti O2-Zr O2 in the isomerization of n-heptane was investigated.The BET, XRD, SEM and NH3-TPD results showed that the template- Ni-WO3 / Ti O2-ZrO2 catalyst prepared by sol-gel method has better crystallinity and better surface acidity and specific surface area in the reaction of n-heptane isomerization Showed high catalytic activity and selectivity, the conversion of n-heptane and the selectivity of isoheptane were 72.62% and 80.81% respectively.The experimental results also showed that the ratio of Ti O2-Zr O2 to Zr O2, Si O2- Zr O2 and Al2O3-Zr O2 are more suitable as supports for the preparation of catalysts for the isomerization of n-heptane.