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采用捏合挤条法制备了催化剂Ni-NiO/γ-Al2O3,用SEM、XRD、BET等方法对催化剂进行了表征,并将催化剂应用于四氢糠醇(THFA)与氨气在固定床反应器中制备吡啶。考察了Ni-NiO负载量、温度、氨醇摩尔比等因素对催化反应的影响,结果表明,随着催化剂组分Ni-NiO负载量的升高,吡啶的收率随之升高,而哌啶的收率随之降低,异喹啉收率在Ni-NiO质量分数为20%时达最高;在350～550℃,随着温度的升高,吡啶的收率随之升高,而副产物哌啶的收率随之降低,异喹啉在400℃收率较高;当氨醇摩尔比为3∶1时,吡啶与异喹啉的收率较高,2∶1时哌啶收率较高。
The Ni-NiO / γ-Al2O3 catalyst was prepared by the kneading and extruding method. The catalysts were characterized by SEM, XRD and BET. The catalyst was applied to the reaction of THFA and ammonia in a fixed bed reactor Pyridine was prepared. The effects of Ni-NiO loading, temperature, molar ratio of amino alcohol and other factors on the catalytic reaction were investigated. The results showed that the yield of pyridine increased with the increase of Ni-NiO loading, Yield of isoquinoline reaches the highest when the mass fraction of Ni-NiO is 20%. At 350-550 ℃, the yield of pyridine increases with the increase of temperature, The yield of piperidine decreased and the yield of isoquinoline was higher at 400 ℃. When the molar ratio of amino alcohol was 3:1, the yield of pyridine and isoquinoline was higher, and the yield of piperidine at 2:1 Higher rate.