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Inverse CeO2/La2Sn1.7Co0.3O7-delta Catalyst for Methane Catalytic Combustion
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
2015-07-10
DOI10.7503/cjcu20150117
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
关键词[WOS]RAY PHOTOELECTRON-SPECTROSCOPY ; VOLATILE ORGANIC-COMPOUNDS ; OXIDE CATALYSTS ; STANNATE PYROCHLORE ; SNO2 ; CO ; PERFORMANCE ; OXIDATION ; EU ; GD
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.
语种英语
WOS记录号WOS:000358472100014
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146423
专题中国科学院大连化学物理研究所
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
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GB/T 7714
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.
APA Li Lingcong.,Hu Ruisheng.,Bai Yaqin.,Li Jingjia.,Tang Hailian.,...&Ji Shengfu.(2015).Inverse CeO2/La2Sn1.7Co0.3O7-delta Catalyst for Methane Catalytic Combustion.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,36(7),1328-1336.
MLA Li Lingcong,et al."Inverse CeO2/La2Sn1.7Co0.3O7-delta Catalyst for Methane Catalytic Combustion".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 36.7(2015):1328-1336.
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