Abstract:In order to prepare a varies of Fe-Ni bimetal oxides (Fe-NiOx) catalysts by sol-gel method

the precursor of different Fe

Ni mole ratio was calcined at 400

500

600 ℃.Catalytic ability of Fe-NiOx catalysts with different calcination temperature and metal element mole ratio was measured by the degradation rate of dimethyl phthalate (DMP) during the oxidation process.Influence of Fe-NiOx catalysts dosage as well as mole ratio between peroxomonosulfate (PMS) and DMP was also investigated so as to study the suitable experimental conditions.The results showed that catalysts calcined at 400 ℃ and 500 ℃ had have nearly the same DMP degradation rate which was is 16.54％

17.84％

respectively

while that of catalysts calcined at 600 ℃ increased sharply to 35.35％.Adding catalysts of c(Fe)∶c(Ni)=1∶4

1∶2

1∶1

2∶1

4∶1

DMP degradation rate was 22.61％

32.63％

35.35％

38.60％ and 39.14％

so it could be seen that catalytic ability of different catalysts was in proportion to the relative content of Fe during the synthesis process.Raising ratio of PMS and DMP from 5∶1 to 20∶1

DMP degradation rate increased to 45.79％

and the amount of DMP hardly decreased when the ratio reached 30∶1.Increasing the dosage of Fe-NiOx catalysts

DMP degradation rate had a similar trend to that of different reactant ratio.Therefore

the optimal conditions of the system was that the ratio of PMS and DMP was 20∶1 and dosage of Fe-NiOx catalysts was 200 mg/L.Adding tert butyl alcohol (TBA)

ethyl alcohol (EA) which was radical scavenger of different radicals

the degradation of DMP decreased from 49.85% to 21.44% and 19.24%

respectively

indicating that the active substance was mainly hydroxyl radicals (·OH) and there was a little sulfate radicals (·SO-4 keywords: peroxomonosulfate  dimethyl phthalate  sulfate radical  bimetal oxides 文章编号：201600969     中图分类号：    文献标志码： 基金项目:国家自然科学基金资助项目（51508353）；成都市科技惠民资助项目（2015-HM01-00279-SF) 作者单位张古承 四川大学 建筑与环境学院 张静 四川大学 建筑与环境学院 张永丽 四川大学 建筑与环境学院 卫陈默 四川大学 建筑与环境学院  Author NameAffiliationZhang Gucheng College of Architecture & Environment

Sichuan Univ. Zhang Jing College of Architecture & Environment

Sichuan Univ. Zhang Yongli College of Architecture & Environment

Sichuan Univ. Wei Chenmo College of Architecture & Environment

Sichuan Univ.  作者简介: 引用文本： 张古承

张静

张永丽

卫陈默.制备条件对Fe-NiOx催化过硫酸氢钾的影响[J].工程科学与技术

2017

49(Z1):202-206. Zhang Gucheng

Zhang Jing

Zhang Yongli

Wei Chenmo.Effect of Preparation Condition on Fe-Ni Bimetal Oxides in Catalytic Peroxomonosulfate Process[J].Advanced Engineering Sciences

2017

49(Z1):202-206.