氯化四(4-磺酸钠苯基)卟啉铁(Ⅲ)催化过氧化氢氧化降解2,4,6-三氯苯酚的动力学研究  

Kinetic study on the oxidative degradation of 2,4,6-trichlorophenol with hydrogen peroxide catalyzed by tetrakis(4-sulfonate) porphyrinatoiron(Ⅲ) chloride

作　　者：卢燕[1,2] 谢斌[1,2] 黄春[3] 李玉龙[1,2] 曾倪[3] 邹立科[1,2] 何锡阳[2] 

机构地区：[1]四川理工学院功能材料研究所,自贡643000 [2]绿色催化四川省高校重点实验室,自贡643000 [3]四川理工学院材料与化学工程学院,自贡643000

出　　处：《环境化学》2013年第3期374-380,共7页Environmental Chemistry

基　　金：绿色催化四川省高校重点实验室重点项目(LZJ1103);四川理工学院科研项目(2012PY14;2010XJKYL021);四川理工学院研究生创新基金项目(y2011015)资助

摘　　要：用紫外-可见分光光度法研究了水溶性金属卟啉Fe(TPPS)Cl催化H2O2氧化降解2,4,6-三氯苯酚(TCP)的动力学(TPPS为四(4-磺酸钠苯基)卟啉),探讨了反应体系酸度、H2O2/Fe(TPPS)Cl物质的量之比、温度对氧化降解速率的影响,提出了反应机理,建立了反应动力学数学模型.研究结果表明,TCP初始浓度为3.8×10-4 mol.L-1、Fe(TPPS)Cl浓度为4.0×10-5 mol.L-1、H2O2浓度为1.8×10-3mol.L-1、温度为25℃、pH值为6.8、反应时间为90 min时,TCP的降解率可达到99%,其表观活化能为10.96 kJ.mol-1.因此,Fe(TPPS)Cl作为模拟过氧化物酶在催化降解TCP过程中是一种有效的催化剂.The kinetics of oxidation of 2,4,6-trichlorophenol（TCP） with hydrogen peroxide catalyzed by water-soluble metalloporphyrins Fe（TPPS）Cl were studied by means of UV-vis spectrophotometer,where TPPS is tetrakis（4-sulfonate）porphyrin.The effect of reaction system acidity,hydrogen peroxide / catalyst molar ratio,and temperature on the catalytic oxidative reaction were investigated.The oxidative degradation mechanism of TCP catalyzed by Fe（TPPS）Cl was proposed,and a kinetic model was established.The results show that the degradation rate of 3.8×10-4 mol · L-1 TCP can reach to 99% and the apparent activation energy Ea is 10.96 kJ · mol-1 with 4.0×10-5 mol · L-1 of Fe（TPPS）Cl and 1.8×10-3 mol · L-1 of H2O2 after 90 min at T=25 ℃ and pH=6.8.Therefore,Fe（TPPS）Cl as peroxidase in the simulation process of the oxidative degradation of TCP is an effective catalyst.

关 键 词：氯化四(4-磺酸基苯基)卟啉铁(Ⅲ) 2 4 6-三氯苯酚 H2O2 催化氧化降解 动力学 

分 类 号：O643.32[理学—物理化学]