论文部分内容阅读
丙烷氨氧化制丙烯腈反应由于具有重大的经济和科研价值,日益引起人们重视。复合金属氧化物是烃类选择氧化与氨氧化中重要的催化剂,具有优良的氧化还原性能、热稳定性和机械强度以及较强的表面酸碱性,长期以来在多相催化领域发挥着重要作用。其中Mo-V-Te-Nb-O复合金属氧化物催化剂是目前文献报道的具有最高活性的丙烷氨氧化制丙烯腈催化剂体系,近年来成为研究的热点。由于催化剂的制备方法对所制备催化剂的活性有较大的影响。因此,本研究采用三种不同的方法合成MoVTeNbO催化剂,分别为:溶液法,旋蒸法和水热法。
Ammonia oxidation of propane to acrylonitrile has drawn increasing attention because of its great economic and scientific value. Complex metal oxides are important catalysts for the selective oxidation and ammoxidation of hydrocarbons. They possess excellent redox properties, thermal and mechanical properties and strong surface acidity and basicity, and have long played an important role in the field of heterogeneous catalysis . Among them, Mo-V-Te-Nb-O composite metal oxide catalyst is the most active propane ammoxidation catalyst for acrylonitrile reported in the literature, and has become a hot spot in recent years. Due to the preparation of the catalyst has a greater impact on the activity of the prepared catalyst. Therefore, three different methods were used to synthesize MoVTeNbO catalysts in this study: solution method, rotary evaporation method and hydrothermal method.