DICP OpenIR
Novel Ni catalysts for methane decomposition to hydrogen and carbon nanofibers
Li, Y; Zhang, BC; Xie, XW; Liu, JL; Xu, YD; Shen, WJ; Shen WJ(申文杰); Shen WJ(申文杰)
关键词Ni Catalyst Ethylene Glycol Fibrous Shaped Methane Decomposition Carbon Nanofiber
刊名JOURNAL OF CATALYSIS
2006-03-10
DOI10.1016/j.jcat.2005.12.027
238期:2页:412-424
收录类别SCI
文章类型Article
部门归属5
项目归属501
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]FILAMENTOUS CARBON ; NICKEL-CATALYSTS ; RAMAN-SCATTERING ; DIRECT CRACKING ; SUPPORTED-NI ; SILICA ; GRAPHITE ; NI/SIO2 ; SURFACE ; REDUCTION
英文摘要Novel nickel oxides with controlled crystalline size and fibrous shape were Successfully prepared by precipitation of nickel acetate and sodium carbonate aqueous Solution with the mediation of ethylene glycol. The precipitation media and temperature were found to play crucial roles in determining the crystalline size and shape of the nickel oxides. The NiO prepared in the aqueous Solutions exhibited mainly spherical particles with few nanorods, whereas the NiO samples prepared in the solution of ethylene glycol could be of spherical, fibrous, or nanorod shape, depending on the precipitation temperature. In particular, the nickel hydroxide precipitate obtained in the Solution of ethylene glycol at 393 K was alpha-Ni(OH)(2) with hydrotalcite-like structures; further calcination of this precipitate at 573-1073 K resulted in the formation of nickel oxides with similar fibrous shapes and crystalline size of 3.0-8.1 nm. Similar metallic Ni crystalline size of about 11 nm and fibrous structure were obtained by reduction of these NiO samples with hydrogen at 773 K. When further exposed to the reaction of methane decomposition, the metallic Ni crystallines still exhibited similar evolution behavior and rapidly stabilized at the critical size of 17-18 nm. Consequently, very close catalytic activities for methane decomposition over these novel Ni catalysts were observed with the carbon yields of 354-398 gC/g(Ni). The Ni crystallines departed from the fibrous structures and gradually aggregated into particles by the dissociation of the deposited carbons. These nickel particles were then highly dispersed on the in situ produced carbon, which can inhibit the further growth of nickel particle. As a result, the initial fibrous structure morphology of the metallic nickel was gradually turned into pear-like shapes. (c) 2006 Elsevier Inc. All rights reserved.
语种英语
原文出处查看原文
WOS记录号WOS:000235625100019
引用统计
被引频次:145[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/93735
专题中国科学院大连化学物理研究所
通讯作者Shen WJ(申文杰); Shen WJ(申文杰)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Li, Y,Zhang, BC,Xie, XW,et al. Novel Ni catalysts for methane decomposition to hydrogen and carbon nanofibers[J]. JOURNAL OF CATALYSIS,2006,238(2):412-424.
APA Li, Y.,Zhang, BC.,Xie, XW.,Liu, JL.,Xu, YD.,...&申文杰.(2006).Novel Ni catalysts for methane decomposition to hydrogen and carbon nanofibers.JOURNAL OF CATALYSIS,238(2),412-424.
MLA Li, Y,et al."Novel Ni catalysts for methane decomposition to hydrogen and carbon nanofibers".JOURNAL OF CATALYSIS 238.2(2006):412-424.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, Y]的文章
[Zhang, BC]的文章
[Xie, XW]的文章
百度学术
百度学术中相似的文章
[Li, Y]的文章
[Zhang, BC]的文章
[Xie, XW]的文章
必应学术
必应学术中相似的文章
[Li, Y]的文章
[Zhang, BC]的文章
[Xie, XW]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。