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学科主题: 物理化学
题名: Ethylbenzene dehydrogenation with CO2 over Fe-doped MgAl2O4 spinel catalysts: Synergy effect between Fe2+ and Fe3+
作者: Ji, Min1;  Zhang, Xiaoyan1;  Wang, Junhu2;  Park, Sang-Eon3, 4
通讯作者: Min Ji
关键词: Ethylbenzene dehydrogenation ;  Spinel ;  Fe-57 Mossbauer spectroscopy ;  Synergy
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 2013-05-01
DOI: 10.1016/j.molcata.2013.01.025
卷: 371, 页:36-41
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 15
项目归属: 1502
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
资助者: 2,3
研究领域[WOS]: Chemistry
英文摘要: Fe-doped MgAl2O4 spinet catalyst of MgFe0.1Al1.9O4 and supported catalyst of Fe2O3-MgO/gamma-Al2O3 for ethylbenzene dehydrogenation in the presence of CO2 were studied by Mossbauer spectroscopy (MS) combining with the partial reduction method in the presence of H-2, and the catalytic activity of the ferrous iron species was discussed. The results showed that the catalytic performance of Fe3+ existing in spinel is superior to alpha-Fe2O3, and the synergistic effect between Fe2+ and Fe3+ might indeed increase the catalytic activity since Fe2+-O2- formed in the process of reduction has moderate basicity, which was more favorable for desorption of CO2 compared with Mg2+-O2-. The reduced MgFe0.1Al1.9O4 containing Fe2+ of around 25% exhibits much higher catalytic activity than unreduced catalyst, with improved styrene yield nearly 2 times to 45.0%. MgxFe1-xO as another ferrous iron species formed in the reduction process of Fe2O3-MgO/gamma-Al2O3 showed inconspicuously catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: IRON-OXIDE CATALYSTS ;  AL MIXED OXIDES ;  CARBON-DIOXIDE ;  OXIDATIVE DEHYDROGENATION ;  MOSSBAUER-SPECTROSCOPY ;  SOFT OXIDANT ;  STYRENE ;  PRECURSORS ;  HYDROTALCITE ;  OXYDEHYDROGENATION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000317091900006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119374
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.Dalian Univ Technol, Sch Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
3.Inha Univ, Lab Nanogreen Catalysis, Inchon 402751, South Korea
4.Inha Univ, Dept Chem, Nano Ctr Fine Chem Fus Technol, Inchon 402751, South Korea

Recommended Citation:
Ji, Min,Zhang, Xiaoyan,Wang, Junhu,et al. Ethylbenzene dehydrogenation with CO2 over Fe-doped MgAl2O4 spinel catalysts: Synergy effect between Fe2+ and Fe3+[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2013,371:36-41.
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