【摘要】 采用等体积浸渍法合成复合催化剂WO₃/ZrO₂-SiO₂,并通过XRD、NH₃-TPD、XPS等表征确定其结构和性能。在固定床反应器上通过仲醇脱水制备α-烯烃对催化剂活性进行评价。结果表明：在WO₃负载量（质量分数）为15%,n（Zr）/n（Si）为1/1、焙烧温度600℃、焙烧时间6 h时所制备的催化剂最具催化活性，在固定床反应器中进行仲醇脱水实验，当反应温度为350℃、空速0.3 h^-1时，α-烯烃的有效选择性可达到80%以上。更多还原

【Abstract】 In this paper, the composite catalyst WO₃/ZrO₂-SiO₂ was synthesized by an equal volume impregnation method, and its structure and performance were determined by XRD, NH₃-TPD, XPS and other characterizations. The catalyst activity was evaluated by preparing α-olefins by dehydration of secondary alcohols on a fixed bed reactor. The results show that the catalyst prepared when the loading of WO₃ is 15%, the ratio of n（Zr）/n（Si） is 1/1, the calcination temperature is 600 ℃, and the calcination time is 6 h is the most catalytically active. The secondary alcohol dehydration experiment is carried out in a fixed bed reactor. When the temperature is 350 ℃ and the space velocity is 0.3 h^-1, the effective selectivity of α-olefin can reach more than 80%.更多还原