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本文研究了顺丁烯二酸酐加成反应法测定石油产品二烯值的方法。实验表明,反应溶剂体系的沸点过低或反应装置的密封不好将导致较低的二烯值测定结果;而反应后体系静置时间的长短则是影响二烯值测定结果是否准确的关键。指出了采用狄尔斯-阿德耳(Diels-Alder)反应原理测定石油产品二烯值实验过程中的关键技术问题。
In this paper, maleic anhydride addition reaction method for the determination of diene content of petroleum products. Experiments show that the boiling point of the reaction solvent system is too low or the reaction device is not good seal will result in a lower determination of the diolefin value; and the length of the reaction system after standing time is the key to determine the accuracy of the determination of diene results. The key technical problems in the determination of diene content of petroleum products by using the Diels-Alder reaction principle are pointed out.