张馨月, 张 静, 张永丽.不同载体镍基催化剂激活过硫酸盐降解酸性橙7的实验研究Journal of Water Resources and Water Engineering[J].,2016,27(3):18-22 |
不同载体镍基催化剂激活过硫酸盐降解酸性橙7的实验研究 |
Nickel-based catalyst with different supports activating persulfate in degradation of acid orange 7 |
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DOI:10.11705/j.issn.1672-643X.2016.03.04 |
中文关键词: 沸石 陶粒 硅胶 酸性橙7 Ni基负载型催化剂 浸渍法 |
英文关键词: zeolite ceramsite silica gel acid orange 7 Ni-based catalysts impregnation |
基金项目:国家自然科学基金青年科学基金项目(51508353) |
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中文摘要: |
分别以沸石、陶粒和硅胶为载体,采用浸渍法制备了不同载Ni催化剂Ni/沸石、Ni/陶粒、Ni/硅胶。通过电镜扫描SEM、X射线衍射(XRD)及X射线光电子能谱(XPS)对3种催化剂进行表征,并对不同镍基催化剂催化过硫酸钠(PS)降解酸性橙7(AO7)的实验性能进行了考察。结果表明:Ni/沸石、Ni/陶粒、Ni/硅胶的主要负载物是NiO,对AO7的最佳去除率分别达到34.9%、46.3%、65.7%,而Ni/硅胶具有较好活性的主要原因可能是与Ni/沸石、Ni/陶粒相比,表面负载的NiO未表现出团聚状态,NiO结晶度较好、分散度最大、颗粒尺寸最小,载体与镍活性组分的相互作用较强。 |
英文摘要: |
Taking different supports (zeolite,ceramsite and silica gel)as carrier,the paper prepared different nickel-based catalysts such as Ni/zeolite,Ni/ceramsite and Ni/silica gel through impregnation.The three kinds of catalysts were characterized by means of scanning electron microscope (SEM),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS),and investigated the different nickel-based catalysts catalyzing sodium persulfate (PS) for the experiments of degrading the acid orange 7(AO7).The results showed that the main load of different nickel-based catalysts is NiO.The degradation rate of AO7 can achieve 33.1%,44.7% and 44.7% respectively with catalysts of Ni/zeolite,Ni/ceramsite and Ni/silica gel. Compared with Ni/zeolite and Ni/ceramsite,the main reason for Ni/silica gel having good activity probably derived from the good crystallinity,the largest dispersity,the smallest size of Nickel grain and the more active of the interaction with nickel active component. |
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