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题名: Inverse CeO2/La2Sn1.7Co0.3O7-delta Catalyst for Methane Catalytic Combustion
作者: Li Lingcong1;  Hu Ruisheng1;  Bai Yaqin1;  Li Jingjia1;  Tang Hailian2;  Wang Junhu2;  Ji Shengfu3
关键词: Inverse catalyst ;  Pyrochlore ;  Ceric oxide ;  Methane catalytic combustion
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2015-07-10
DOI: 10.7503/cjcu20150117
卷: 36, 期:7, 页:1328-1336
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The inverse CeO2/La2Sn1.7Co0.3O7-delta was prepared by sol-gel and impregnation method calcined at 900 degrees C and investigated in the methane catalytic combustion. The catalytic activity evaluated for methane combustion showed that the methane conversion temperature of T-90 Was 564 degrees C, compared with the pure La2Sn1.7Co0.3O7-delta prepared in the same condition and mechanical mixing of La2Sn1.7Co0.3O7-delta and CeO2, T-90 decreased by 78 degrees C and 135 degrees CC, respectively, and the inverse La2Sn1.7Co0.3O7-delta catalyst not only had the excellent methane combustion activity, but also had the well thermal stability and reusable performance. The excellent performance of the inverse La2Sn1.7Co0.3O7-delta catalyst was represented by the characterizations of XRD, TEM, AFM, TPR, BET, XPS and Mossbauer spectra. XRD characterization showed that the inverse La2Sn1.7Co0.3O7-delta catalyst not only had the La2Sn1.7Co0.3O7-delta structure, but also had the CeO2 phase, and the CeO2 had been well disperse on the La2Sn1.7Co0.3O7-delta composite oxide; TPR indicated that the La2Sn1.7Co0.3O7-delta had lower reduction temperature compared to La2Sn1.7Co0.3O7-delta XPS and Mossbauer spectra indicated that the Sn4+ is the main valence state in the inverse catalyst, and the lattice oxygen play an important role in catalytic activity; TEM and BET tests showed that the La2Sn1.7Co0.3O7-delta particles had better dispersed and larger surface area than La2Sn1.7Co0.3O7-delta. All above explained the reasons of the La2Sn1.7Co0.3O7-delta catalyst had excellent catalytic activity toward methane combustion.
关键词[WOS]: RAY PHOTOELECTRON-SPECTROSCOPY ;  VOLATILE ORGANIC-COMPOUNDS ;  OXIDE CATALYSTS ;  STANNATE PYROCHLORE ;  SNO2 ;  CO ;  PERFORMANCE ;  OXIDATION ;  EU ;  GD
语种: 英语
WOS记录号: WOS:000358472100014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146423
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Inner Mongolia Univ, Coll Chem & Chem Engn, Key Lab Rare Earth Mat Chem & Phys, Hohhot 010021, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116011, Peoples R China
3.Beijing Univ Chem Technol, State Key Lab Beijing Univ Chem Ind Chem Effect U, Beijing 100029, Peoples R China

Recommended Citation:
Li Lingcong,Hu Ruisheng,Bai Yaqin,et al. Inverse CeO2/La2Sn1.7Co0.3O7-delta Catalyst for Methane Catalytic Combustion[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2015,36(7):1328-1336.
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