间苯二酚催化加氢反应产物的分析及精制

Analysis and Purification of Hydrogenation Products of Resorcinol

间苯二酚催化加氢法是目前生产1,3-环己二酮的主流方法。今采用气相色谱-质谱法对间苯二酚催化加氢反应产物的分析及精制进行研究,建立了间苯二酚及1,3-环己二酮的气相色谱定量分析方法。通过气相色谱-质谱法对该体系在有机溶剂中的稳定性研究表明,丙酮、乙醇和乙酸乙酯均不适合作为该反应体系后处理的溶剂,而乙腈符合选择的要求。用乙腈对反应产物进行重结晶,得到了高纯度的1,3-环己二酮产品。

1,3-cyclohexanedione（CHD） has generally been industrially produced from the hydrogenation of resorcinol（RES）.In this paper,the analysis and purification of the resorcinol hydrogenation products were studied by GC-MS.A gas chromatography method was established to quantitatively analyze the resorcinol and 1,3-cyclohexanedione.The stability of resorcinol and 1,3-cyclohexanedione in several organic solvents were studied by GC-MS,the results show that the acetonitrile is the most favorable solvent for the extraction and post processing.Then the acetonitrile was used as recrystalization solvent for 1,3-cyclohexanedione and a higher purity was obtained.