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题名: Effect of introduction of Ba, Mn on thermal stability and catalytic activity to methane combustion of Al2O3
作者: Wang, JW;  Xu, JG;  Tian, ZJ;  Xu, YP;  Xu, ZS;  Lin, LW
关键词: methane ;  catalytic combustion ;  supercritical drying ;  Ba-hexaaluminate ;  catalyst
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2002-11-01
DOI: 10.3866/PKU.WHXB20021112
卷: 18, 期:11, 页:1018-1022
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A sol-gel method was employed to prepare Mn-substituted barium hexaaluminate catalysts for methane combustion. Supercritical drying (SCD) and conventional oven drying(CD) methods were used to extract the water in the hydrogel. The effects of drying methods,. as well as the incorporation of Ba, Mn, on properties of the catalysts were investigated by means of N-2-adsorption, TG-DTA and X-ray diffraction. The supercritical drying method could maintain a higher specific surface area of the samples and suppress the transformation into alpha-Al2O3 at elevated temperatures. The introduction of Mn oxides could promote the transformation into hexaaluminates during calcination. BaMnAl11O19 catalyst dried by SCD method has a specific surface area of 35.1 m(2 .) g(-1) and an activity with T-10% (temperature for 10% methane conversion) of 500 degreesC under the condition of 0.1 MPa and 40000 h(-1) GHSV.
语种: 英语
WOS记录号: WOS:000179364700012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139209
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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Wang, JW,Xu, JG,Tian, ZJ,et al. Effect of introduction of Ba, Mn on thermal stability and catalytic activity to methane combustion of Al2O3[J]. ACTA PHYSICO-CHIMICA SINICA,2002,18(11):1018-1022.
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