中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Nickel on a macro-mesoporous Al2O3@ZrO2 core/shell nanocomposite as a novel catalyst for CO methanation
作者: Yang, Xuzhuang1;  Wang, Xin1;  Gao, Guanjun1;  Wendurima1;  Liu, Erming2;  Shi, Quanquan3;  Zhang, Jianan1;  Han, Chenhui1;  Wang, Jie1;  Lu, Huailiang1;  Liu, Jie1;  Tong, Min1
关键词: CO methanation ;  Ni/Al2O3@ZrO2 ;  SNG ;  Macro-mesoporous material
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2013-10-25
DOI: 10.1016/j.ijhydene.2013.08.083
卷: 38, 期:32, 页:13926-13937
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: A novel nickel catalyst supported on Al2O3@ZrO2 core/shell nanocomposites was prepared by the impregnation method. The core/shell nanocomposites were synthesized by depositing zirconium species on boehmite nanofibres. This contribution aims to study the effects of the pore structure of supports and the zirconia dispersed on the surface of the alumina nanofibres on the CO methanation. The catalysts and supports were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), H-2 temperature-programmed reduction (H-2-TPR), nitrogen adsorption desorption, and thermogravimetry and differential thermal analysis (TG-DTA). The catalytic performance of the catalysts for CO methanation was investigated at a temperature range from 300 degrees C to 500 degrees C. The results of the characterization indicate that the metastable tetragonal zirconia could be stably and evenly dispersed on the surface of alumina nanofibres. The interlaced nanorods of the Al2O3@ZrO2 core/shell nanocomposites resulted in a macropore structure and the spaces between the zirconia nanoparticles dispersed on the alumina nanofibres formed most of the mesopores. Zirconia on the surface of the support promoted the dispersion and influenced the reduction states of the nickel species on the support, so it prevented the nickel species from sintering as well as from forming a spinel phase with alumina at high temperatures, and thus reduced the carbon deposition during the reaction. With the increase of the zirconia content in the catalyst, the catalytic performance for the CO methanation was enhanced. The Ni/Al2O3@ZrO2-15 exhibited the highest CO conversion and methane selectivity at 400 degrees C, but they decreased dramatically above or below 400 degrees C due to the temperature sensitivity of the catalyst. Ni/Al2O3@ZrO2-30 exhibited a high and constant rate of methane formation between 350 degrees C and 450 degrees C. The excellent catalytic performance of this catalyst is attributed to its reasonable pore structure and good dispersion of zirconia on the support. This catalyst has great potential to be further studied for the future industrial use. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: SUBSTITUTE NATURAL-GAS ;  CARBON-DIOXIDE ;  SELECTIVE METHANATION ;  SYNGAS METHANATION ;  NI/AL2O3 ;  BED ;  HYDROGEN ;  IMPACT ;  PHASE
语种: 英语
WOS记录号: WOS:000328010800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137812
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010021, Inner Mongolia, Peoples R China
2.Univ S Australia, Ctr Environm Risk Assessment & Remediat, Mawson Lakes, SA 5095, Australia
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Xuzhuang,Wang, Xin,Gao, Guanjun,et al. Nickel on a macro-mesoporous Al2O3@ZrO2 core/shell nanocomposite as a novel catalyst for CO methanation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2013,38(32):13926-13937.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Yang, Xuzhuang]'s Articles
 [Wang, Xin]'s Articles
 [Gao, Guanjun]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Yang, Xuzhuang]‘s Articles
 [Wang, Xin]‘s Articles
 [Gao, Guanjun]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace