Preparation and characterization of mesoporous mixed oxide catalyst La-Co-Zr-O
文献类型：期刊论文
| 作者 | Zou, ZQ; Meng, M; Zha, YQ; Xie, YN; Hu, TD; Liu, T; Xie YN(谢亚宁) ; Hu TD(胡天斗); Liu T(刘涛)
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| 刊名 | CHINESE JOURNAL OF CATALYSIS
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| 出版日期 | 2006 |
| 卷号 | 27期号:2页码:#REF! |
| 关键词 | mesoporous material lanthanum oxide cobalt oxide zirconium oxide carbon monoxide catalytic oxidation cetyl trimethyl ammonium bromide p-octyl polyethylene glycol phenyl ether |
| 其他题名 | 介孔混合氧化物催化剂La2Co2Zr2O 的制备与表征 |
| 通讯作者 | Zou, ZQ (reprint author), Tianjin Univ, Dept Catalysis Sci & Technol, Sch Chem Engn, Tianjin 300072, Peoples R China. |
| 英文摘要 | The mixed/complex oxide catalysts prepared by the normal co-precipitation method possess low surface area, poor component dispersion, and wide pore size distribution. In this work, the method for the Si-Al zeolite synthesis was used for reference to prepare the La-Co-Zr-O ((La + Co)/(La + Co + Zr) atomic ratio was 0.5) mixed oxide catalysts with large surface area and narrow pore size distribution. Cetyl trimethyl ammonium bromide (CTAB), p-octyl polyethylene glycol phenyl ether (OP), and their mixture were used as the templates, respectively. N-2 adsorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), extended X-ray absorption fine structure (EXAFS) spectroscopy, and temperature-programmed reduction (H-2-TPR) were employed to characterize the catalysts. The N-2 adsorption results show that the obtained samples possess large specific surface area (96.6 similar to 117.6 m(2)/g) and uniform pore diameter (3.5 similar to 4.3 nm). The results of XRD, XPS, and Co K-edge EXAFS indicate that the highly dispersed Co3O4 crystallite (23 similar to 33 nm) is the main active phase for CO oxidation. Compared with the catalyst prepared by co-precipitation method, the samples prepared by citric acid complexation-organic template decomposition method have much higher component dispersion and catalytic activity. The H-2-TPR results reveal that the Co3O4 phase in the sample prepared using mixed templates of CTAB and OP is easier to be reduced, which is relevant to the catalyst activity for CO oxidation. |
| 学科主题 | Chemistry; Engineering |
| 类目[WOS] | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 收录类别 | SCI |
| WOS记录号 | WOS:000235990300009 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226368]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Zou, ZQ,Meng, M,Zha, YQ,et al. Preparation and characterization of mesoporous mixed oxide catalyst La-Co-Zr-O[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(2):#REF!. |
| APA | Zou, ZQ.,Meng, M.,Zha, YQ.,Xie, YN.,Hu, TD.,...&刘涛.(2006).Preparation and characterization of mesoporous mixed oxide catalyst La-Co-Zr-O.CHINESE JOURNAL OF CATALYSIS,27(2),#REF!. |
| MLA | Zou, ZQ,et al."Preparation and characterization of mesoporous mixed oxide catalyst La-Co-Zr-O".CHINESE JOURNAL OF CATALYSIS 27.2(2006):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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