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题名: Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts
作者: Xiong Guoxing1;  Xia Xinrui1;  Chen Hengrong1;  Guo Xiexian1
关键词: NaCl/B2O3/FeOx catalysts ;  Synergetic effect ;  Oxidative coupling of methane ;  XPS ;  H-2-TPR and O-2-TPD
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 1994
DOI: 10.3866/PKU.WHXB19941103
卷: 10, 期:11, 页:971-977
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 series of NaCl/B2O3/Fe2O3 catalysts having a B/Fe atomic ratio from 0 to 0.3 and 0.25 of Na/Fe atomic ratio were prepared for the oxidative coupling of methane (OCM). It was noted that NaCl and B2O3 show a synergetic effect: NaCl/Fe2O3 produces mainly CO2, but B2O3/Fe2O3 and B2O3/NaCl have poor activity. NaCl/B2O3/Fe2O3 catalyst has however high activity and selectivity. When the addition of B2O3 approaches 15 (at)%, the C-2 yield and selectivity reach their maxima, 17% and 75% respectively. The C2H4/C-2 ratio is as high as 76%. XRD, XPS, H-2-TPR, O-2-TPD and In - situ Mossbauer were employed to investigate the properties of the catalysts. Results show there is a synergetic effect between NaCl and B2O3 and FeOx surface. B2O3 modifies the redox ability of Fe2O3. The NaCl modified B2O3/FeOx has high reduction and lattice oxygen evaporation rates at 750 degrees C. The high activity and selectivity of the NaCl/B2O3/FeOx catalyst are closely related with this synergetic effect.
语种: 英语
WOS记录号: WOS:000207589800003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142547
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Xiong Guoxing,Xia Xinrui,Chen Hengrong,et al. Synergetic Effect between NaCl and B2O3 in Modified FeOx Catalysts[J]. ACTA PHYSICO-CHIMICA SINICA,1994,10(11):971-977.
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