三甲氢醌合成中各组分的气相色谱分析

A GC Analysis of Different Components in Synthesizing 2,3,5-Trimethyl hydroquinone

提出了一种新的由偏三甲苯制取三甲氢醌的氧化剂体系 (冰醋酸 -过氧化氢 -浓硫酸 )。采用5 % SE- 30填充柱和氢火焰离子检测器 ,对反应物和产物进行色谱分析 ,平均回收率为 97.0 %～98.7% ,相对标准偏差为 0 .71 %～ 0 .89%。

2,3,5-trimethyl hydroquinone(TMHQ) was prepared from 1,2,4 trimethyl benzene(TMB) in new oxidizer system(HAc H 2O 2 H 2SO 4). The reactants and products were determined by GC with 5%SE 30 packed column and FID detector. The recoveries range from 97.0%~98.7% with relative standard deviations from 0.71%~0.89%.