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Study on the Toluene Oxidation to Benzaldehyde in Subcritical Water
Author(s): 
Pages: 503-506
Year: Issue:  4
Journal: JOURNAL OF CHEMICAL ENGINEERING OF CHINESE UNIVERSITIES

Keyword:  近临界水氧化反应甲苯苯甲醛;
Abstract: 研究了在近临界水中,无催化剂条件下,用过氧化氢作为氧源,氧化甲苯生成苯甲醛.并研究了甲苯在近临界水中氧化成苯甲醛的化学工艺;对反应参数(反应温度、反应时间、过氧化氢用量)对苯甲醛收率的影响进行了详细的实验研究.研究结果表明,在350℃,反应时间为60min,n[H2O2]:n[甲苯]为3.5的最优化条件下,苯甲醛的收率可达17.4%.研究结果显示,合理地控制过氧化氢用量,可避免副反应的发生,当n[H2O2]:n[甲苯]小于或等于2.2时,可以减少苯酚、p-甲酚等副产物的生成.该方法以水为溶剂,且避免了使用催化剂,对环境无污染.
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