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题名: Syntheses of La1-xBaxMn2Al10O19 catalysts (x=0, 0.05) in a novel microemulsion of water/2-propanol/1-butanol and their high activities in methane combustion
作者: Teng, Fei;  Liang, Shuhui;  Gauge, Buergen;  Zhu, Yongfa;  Xu, Jinguang;  Wen, Guodong;  Tian, Zhijian;  Wang, Zheming;  Yang, Xiaomei;  Xiong, Guoxing
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2007-07-26
DOI: 10.1021/jp071034x
卷: 111, 期:29, 页:10941-10947
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: In this work, a novel system of water/2-propanol/1-butanol (W/iP/nB) was developed to synthesize La1-xBaxMn2Al10O19 (x = 0, 0.05) catalysts. These catalysts were also synthesized by the hydrolysis of the alkoxides in distilled water. The physicochemical properties of the catalysts were characterized by transmission electron microscopy, X-ray powder diffraction, and N-2 adsorption isotherm measurements. The effects of the reaction medium and drying method on the properties of the catalysts were investigated. The results showed that La0.95Ba0.05Mn2Al10O19 catalyst synthesized in W/iP/nB had a higher activity in methane combustion (T-10% = 425 degrees C; T-10% = the temperature at 10% methane conversion) than that prepared in distilled water (T-10% = 515 degrees C). After the reaction was run at 700 degrees C for 100 h under the reaction conditions, La0.95Ba0.05Mn2Al10O19 catalyst synthesized in W/iP/nB showed a higher stability than that prepared in distilled water. The LaMn2Al10O19 synthesized by subcritical drying showed a higher activity (T-10% = 440 degrees C) than that prepared by conventional oven drying. La0.95Ba0.05Mn2Al10O19 catalyst showed a higher activity than LaMn2Al10O19, which was ascribed to the partial substitution of Ba for La. Furthermore, the structure property of water in W/iP/nB was investigated by means of FT-IR, NMR, electric conductivity, and laser light scattering granulometry. It was proposed that a novel reverse microemulsion of W/iP/nB is formed by distilled water, 2-propanol, and 1-butanol. The hydrolysis of the alkoxides in W/iP/nB was controlled efficiently, just as in a conventional reverse microemulsion.
关键词[WOS]: SELF-ASSOCIATION ;  AQUEOUS-SOLUTION ;  WATER MIXTURES ;  PHASE-BEHAVIOR ;  SURFACE-AREA ;  SYSTEMS ;  TEMPERATURE ;  BAO.6AL2O3 ;  DIFFUSION ;  OXIDATION
语种: 英语
WOS记录号: WOS:000248121600028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140553
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.Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China
2.Yantai Univ, Inst Appl Catalysis, Yantai 264005, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Teng, Fei,Liang, Shuhui,Gauge, Buergen,et al. Syntheses of La1-xBaxMn2Al10O19 catalysts (x=0, 0.05) in a novel microemulsion of water/2-propanol/1-butanol and their high activities in methane combustion[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(29):10941-10947.
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