甲醇甲苯甲基化制对二甲苯的色谱分析

Chromatographic Analysis of Para-xylene from Methylation of Toluene with Methanol

针对甲醇甲苯甲基化制对二甲苯反应生成产物中同分异构体的对、间、邻二甲苯物化性质十分相近的特点,选用邻苯二甲酸二壬酯/有机皂土作固定相,氢火焰法在柱温80℃时,检测甲醇甲苯制对二甲苯的反应产物,最佳分析条件是:柱温80℃;汽化室温度160℃;检测器温度160℃;氢气流量70 mL/min;空气:400 mL/min。

Products from selective methylation of toluene with methanol to produce para - xylene was analyzed by gas chromatography. Dinonyl phthalate/bentone was used as stationary phase, and the optimal condition was chosen as hydrogen flame method with column temperature of 80℃, both gasification chamber and detector temperature of 160℃, hydrogen flow of 70 mL/min, and air flow of 400 mL/min.