Atomic scale investigations of catalyst and catalytic graphitization in a silicon and titanium doped graphite

IMR OpenIR

	Atomic scale investigations of catalyst and catalytic graphitization in a silicon and titanium doped graphite
	Lin, QingYun; Feng, Zhihai; Liu, ZhanJun; Guo, QuanGui; Hu, ZiJun; He, LianLong; Ye, HengQiang; llhe@imr.ac.cn
	2015
发表期刊	CARBON
ISSN	0008-6223
卷号	88 页码:252-261
摘要	The catalysts and catalytic graphitization mechanisms in the graphite blocks doped by silicon (Si) and titanium (Ti) have been systematically investigated at the atomic scale by high-resolution transmission electron microscopy. Few silicon carbide (SiC) crystallites would be residual and coexisted with titanium carbide (TiC) crystallites with two forms due to the low-energy interface between them, inhibiting the escape of the SiC. Three kinds of residual TiC coexisted with the graphite, which correspond to two distinct catalytic mechanisms. Besides the well-acknowledged dissolution-precipitation mechanism for TiC catalytic graphitization, the TiC formation-decomposition mechanism has been experimentally validated for the first time. Extensive investigations on the interfaces between TiC and graphite crystallites reveal that the orientation of the (111) planes of TiC relative to the interface essentially influence the growth modes and basal plane stacking sequence of graphite, and the related model has been proposed to decode the precipitation mechanism of hexagonal and rhombohedral graphite. (c) 2015 Elsevier Ltd. All rights reserved.
部门归属	[lin, qingyun ; he, lianlong ; ye, hengqiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [feng, zhihai ; hu, zijun] aerosp res inst mat & proc technol, natl key lab adv funct composite mat, beijing 100076, peoples r china ; [liu, zhanjun ; guo, quangui] chinese acad sci, inst coal chem, key lab carbon mat, taiyuan 030001, peoples r china
资助者	National Program on Key Basic Research Project (973 Program) [2011CB605803, 2011CB605802, 2011CB605604]; National Natural Science Foundation of China [51102070, 50921004]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74647
专题	中国科学院金属研究所
通讯作者	llhe@imr.ac.cn
推荐引用方式 GB/T 7714	Lin, QingYun,Feng, Zhihai,Liu, ZhanJun,et al. Atomic scale investigations of catalyst and catalytic graphitization in a silicon and titanium doped graphite[J]. CARBON,2015,88:252-261.
APA	Lin, QingYun.,Feng, Zhihai.,Liu, ZhanJun.,Guo, QuanGui.,Hu, ZiJun.,...&llhe@imr.ac.cn.(2015).Atomic scale investigations of catalyst and catalytic graphitization in a silicon and titanium doped graphite.CARBON,88,252-261.
MLA	Lin, QingYun,et al."Atomic scale investigations of catalyst and catalytic graphitization in a silicon and titanium doped graphite".CARBON 88(2015):252-261.