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学科主题: 物理化学
题名: FeN particles confined inside CNT for light olefin synthesis from syngas: Effects of Mn and K additives
作者: Yang, Zhiqiang1;  Pan, Xiulian1;  Wang, Junhu2;  Bao, Xinhe1
通讯作者: 潘秀莲 ;  包信和
关键词: CO hydrogenation ;  Carbon nanotubes ;  Confined iron nitride nanoparticles ;  Mn promotion ;  K promotion
刊名: CATALYSIS TODAY
发表日期: 2012-06-01
DOI: 10.1016/j.cattod.2011.11.034
卷: 186, 期:1, 页:121-127
收录类别: SCI
文章类型: Article
部门归属: 5;15
项目归属: 502;1502
产权排名: 1,1
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The effects of manganese and potassium on the structural and morphological properties, phase compositions and CO adsorption behavior of the CNT-confined FeN catalyst were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fe-57 Mossbauer effect spectroscopy (MES) and CO temperature-programmed desorption (TPD). The results suggested that the presence of manganese helps retain nitrogen in cubic FeCxN1-x and facilitates CO adsorption. The selectivity to (C2C4=)-C-= light olefins is enhanced over Mn(1.0 wt%)/FeN/CNT although the activity decreases within the loading range of 0.5-2.0 wt% for Mn. Although further promotion with K could improve the activity slightly, the selectivity to light olefins decreases. At the same time, the addition of potassium enhanced the water gas shift activity and shifted the selectivity to heavy hydrocarbons (C5+), similar to the conventional reduced iron catalysts. (C) 2011 Elsevier B. V. All rights reserved.
关键词[WOS]: FISCHER-TROPSCH SYNTHESIS ;  CARBON-MONOXIDE CATALYSTS ;  IRON-MANGANESE CATALYST ;  CO HYDROGENATION ;  ELECTRONIC-STRUCTURE ;  POTASSIUM ;  NITRIDE ;  CHEMISORPTION ;  NANOTUBES ;  ALKENES
语种: 英语
WOS记录号: WOS:000304259800018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/118360
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
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Zhiqiang,Pan, Xiulian,Wang, Junhu,et al. FeN particles confined inside CNT for light olefin synthesis from syngas: Effects of Mn and K additives[J]. CATALYSIS TODAY,2012,186(1):121-127.
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