间二甲苯硝化工艺的优化研究  

Study on the Nitrification of m-Dimethyl Benzene

作　　者：李建东[1] 李永祥[1] 陈啟虎[1] 杨玉芬[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《山东化工》2010年第11期23-24,27,共3页Shandong Chemical Industry

摘　　要：以间二甲苯为原料,采用分段变温硝化,制得2,4-二甲基硝基苯和2,6-二甲基硝基苯,总收率达到94%以上,摸索出了间二甲苯混酸硝化制一硝基间二甲苯较适宜的硝化条件。通过实验分别讨论了反应温度,混酸配比,硝化时间对硝化产物的影响。2 - Nitro - m - xylene and 4 - nitro - m - xylene were prepared form m - xylene by subsection nitrotion. The yield of the mixture of 2 - nitro - m - xylene and 4 - nitro - m - xylene was 94%. The right conditions were founded form m - xylene to 2 - nitro - m - xylene and 4 - nitro - m - xylene. The time of the nitrotion and reaction temperature and mixed acid on the yield were discussed by experiment.

关 键 词：间二甲苯 混酸 硝化 2 4-二甲基硝基苯 2 6-二甲基硝基苯 

分 类 号：O625.62[理学—有机化学] TQ226.1[理学—化学]