【作者】 朱宪； 王倩；

【Author】 Zhu Xian Wang QianSchool of Envrn..Chem.Eng. Shanghai University, Shanghai 201800, China

【机构】 上海大学环境与化学工程学院；

【摘要】 本文研究了甲苯在近临界水中用过氧化氢作为氧源的氧化反应,并对反应参数对苯甲醛收率的影响、反应机理及连串反应动力学模型进行了详细的实验研究和理论探讨。更多还原

【Abstract】 The effects of reaction parameter on yield of benzaldehyde produced from toluene oxidization using hydrogen peroxide in subcritical water have been investigated. The experimental results show that if the molar ratio of hydrogen peroxide to toluene is controlled in a reasonable range , the by-products may be neglected. The optimum technology of toluene oxidization to benzaldehyde is: reaction time 60 min,reaction temperature 350℃, molar ratio of hydrogen peroxide to toluene 3.5. The yield of benzaldehyde can reach 17.2% under the optimum condition. The research results of chemical reaction kinetics prove that the consecutive reaction consists of two first-order reaction,and the activation energy of these two reactions are 89kJ.mor-1 and 76kJ.mol-1 respectively.l更多还原