Abstract: A catalyst for obtaining pyromellitic dianhyride by catalytic gaseous phase oxidation from durene are developmented. The catalyst contains Ce-Mo-Ti-V as essential active constituent. The types of carriers, active constituent as well as the influence on the processing result, some processing conditions such as the temperature, the speed of air and the concentration of the reactors, have been studied through experiments. By using the catalyst, at 455℃, space veiocity 6 000 h^－1 and durene concentration in air 20g/m³,the weight yield of pyromellitic dianhyride is 99.7%.

摘要： 开发了一种由均四甲苯空气气相氧化制均苯四甲酸二酐过程所需的催化剂，该催化剂活性组分为Ce-Mo-Ti-V。通过实验研究了载体种类、活性组分、温度、空速和反应物浓度对工艺结果的影响。实验表明：在空速6 000 h^－1，温度为455℃，均四甲苯浓度为20 g/m³时，均苯四甲酸二酐的质量收率达到101.7%。