期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 200, 期 -, 页码 51-58出版社
ELSEVIER
DOI: 10.1016/j.seppur.2018.02.026
关键词
Graphite Diethyl phthalate; Catalyst Zinc oxide; Catalytic ozonation; Activation energy
资金
- Key Project in the National Science & Technology Pillar Program [2015BAB01B04]
- Natural Science Foundation of China [51378232, 51108201]
- Fundamental Research Funds for the Central Universities (Huazhong University of Science and Technology) [2015QN123]
Diethyl phthalate (DEP) degradation by graphite supported metal oxide catalytic ozonation in aqueous solution was conducted. The activity and stability of graphite supported ZnO (ZnO/graphite) catalyst, the effects of preparation parameters and operational conditions on the activity of ZnO/graphite, and the mechanism of DEP degradation by ZnO/graphite catalytic ozonation were studied. ZnO/graphite has the highest activity on ozonation of DEP among the MnO, FeO, CrO, CoOx, NiOx and ZnO supported on graphite catalysts, and it keeps excellent catalytic activity during reuse. ZnO/graphite catalyst prepared with 3.5% loading of zinc and calcined at 573 K in N-2 atmosphere has the highest activity, and the rodlike ZnO nanoparticles are formed on the graphite surface. The ZnO/graphite catalyst dose, the ozone dose and the initial solution pH exert positive effect on ozonation of DEP. The presence of ZnO/graphite enhances the utilization efficiency of ozone from 52.1% (ozonation alone) to 72.1%, and reduces more than half of the apparent activation energy for ozonation of DEP. It is proposed that the DEP oxidation occurs both in bulk solution and on the surface of ZnO/graphite catalyst, and 'OH plays a key role in bulk solution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据