中南大学学报（自然科学版）2018，Vol.49Issue(5)：1103-1109,7.DOI:10.11817/j.issn.1672-7207.2018.05.011
铁镍物质的量比对双金属催化剂性能的影响
Effect of Fe-Ni bimetal oxides with different element molar ratios on catalytic activity
摘要
Abstract
Bimetal Fe-Ni oxides (Fe-NiOx) catalysts prepared by sol-gel method were synthesized to avoid the pollution caused by metal ions in homogeneous system. Different bimetal catalysts were prepared with different mole ratios of Fe and Ni, and the surface properties were characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR). The degradation rate of dimethyl phthalate (DMP) was measured as the target that revealed the activity of catalysts to activated O3, and the stability of bimetal catalysts was investigated after being used for 5 times. The results show that the prepared 5 catalysts work well and the degradation rates of DMP are 85.93%, 63.33%, 83.92%, 78.58% and 80.93% in 5 min, respectively. The O3decomposition rates have the similar trend, indicating that the degradation rate of DMP is almost caused by the decomposition of O3. Fe3O4, NiFe2O4and NiO are the main phases in the surface of Fe-NiOxcatalysts. The average grain size of Fe-NiOxcatalysts is in the range of 0.1-0.3 μm and many holes are generated with these grain assembled. There are hydroxyl groups (—OH) on the surface of catalysts. Therefore, it can be inferred that the catalytic process is possible due to the combined action of multi-valence of metal elements and —OH.关键词
高级氧化/异相催化/双金属氧化物/臭氧Key words
advanced oxidation process/heterogeneous catalysis/bimetal oxides/ozone分类
资源环境引用本文复制引用
安晓倩,张古承,张静,卫陈默,周鹏,徐浩,叶倩,周冠宇,杨富花..铁镍物质的量比对双金属催化剂性能的影响[J].中南大学学报（自然科学版）,2018,49(5):1103-1109,7.基金项目
国家自然科学基金资助项目(51508353) （51508353）
成都市科技惠民项目(2015-HM01-00279-SF)(Project(51508353)supported by the National Natural Science Foundation of China （2015-HM01-00279-SF）
Project(2015-HM01-00279-SF)supported by the Science and Technology Huimin Project of Chengdu) （2015-HM01-00279-SF）
