Ce-modified AlZr pillared clays supported-transition metals for catalytic combustion of chlorobenzene
来源期刊：Journal of Rare Earths2018年第11期
论文作者：Binbin Feng Yingxi Wei Yingnan Qiu Shufeng Zuo Na Ye
文章页码：1169 - 1174
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 N2 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. H2-temperature-programmed reduction shows that cerium can promote the redox cycles of the manganese system through the strong interactions between MnO2, CeO2 and AlZr-PILC. In particular, MnCe（9:1）/AlZr-PILC shows the best catalytic activity in the catalytic combustion of chlorobenzene.
Binbin Feng，Yingxi Wei，Yingnan Qiu，Shufeng Zuo，Na Ye
Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process,Shaoxing University
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 N2 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. H2-temperature-programmed reduction shows that cerium can promote the redox cycles of the manganese system through the strong interactions between MnO2, CeO2 and AlZr-PILC. In particular, MnCe（9:1）/AlZr-PILC shows the best catalytic activity in the catalytic combustion of chlorobenzene.
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