摘要
以甲基橙模拟印染废水为研究对象,分析甲基橙电解脱色一级反应动力学过程,研究发现温度有利于电解脱色反应的进行,测得293~333K范围内不同温度下反应速率常数,并据阿伦利乌斯公式求得1.1V电位下的活化能为1.274kJ/mol;HPLC-MS、GC-MS推测甲基橙脱色裂解反应主要包括脱羧、去甲基化和开环裂解等反应.
The decolorization of methyl orange,its kinetics and mechanism are studied by systematic electrochemical oxidation.It is found that the decolorization rate gradually increases with temperature rise and the rate constants at different temperatures within the range of 293~333Kare also obtained.Using the Alan Pretorius formula,the reaction activation energy is found to be 1.274kJ/mol at the voltage of 1.1V.The pyrolysis reactions of methyl orange mainly includes decarboxylation,demethylation and open ring reactions.
引文
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