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Ce-modified AlZr pillared clays supported-transition metals for catalytic combustion of chlorobenzene

查看全文 作　　者：Binbin [1]Feng;Yingxi [1]Wei;Yingnan [1]Qiu;Shufeng [1]Zuo;Na [1]Ye 高影响力作者 机构地区：[1]Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process,Shaoxing University高影响力机构 出　　处：《Journal of Rare Earths》索引2018年第36卷第11期,共6页高影响力期刊 基　　金：Project supported by 2017 National Innovation Training Program for College Students(201710349004);the Project of Shaoxing University(2015LG1002);2017 Zhejiang Province Innovation Training Program for College Students(2017R428024);National Natural Science Foundation of China(21577094) 摘　　要：In this article, we provided a one-step hydrothermal method to prepare composite AlZr pillaring agents,and synthesized AlZr-pillared clays(AlZr-PILC) via ion exchange. Compared with conventional methods,our method successfully shortened synthetic routes and greatly reduced consumption of the materials.Then, AlZr-PILC-supported manganese and cerium oxide catalysts were obtained by impregnation method. The compositions and properties of these catalysts were characterized by some technical means.The energy dispersive X-ray spectroscopy clearly shows the existence of Mn, Ce, and O, which indicates the successful loading of the active components on the surface of AlZr-PILC. Meanwhile, the results of Xray diffraction(XRD) and N_2 adsorption experiments demonstrate that the synthesized AlZr-PILC outperforms the raw clays(Na-mmt) and mononuclear AI-PILC in the catalytic combustion of chlorobenzene. XRD and high-re solution transmission electron microscopy also proves that the high activity of them is related to the high dispersion of the oxides and the exposure of more active sites. H_2-temperature-programmed reduction shows that cerium can promote the redox cycles of the manganese system through the strong interactions between MnO_2, CeO_2 and AlZr-PILC. In particular, MnCe(9:1)/AlZr-PILC shows the best catalytic activity in the catalytic combustion of chlorobenzene. 关 键 词：催化燃烧 CEO2 泥土 氧化物催化剂 修改 金属 氧化还原作用 合成线路
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