Novel two-step process for synthesising beta-SiC whiskers from coal fly ash and water glass

doi:10.1016/j.ceramint.2018.03.082

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Novel two-step process for synthesising beta-SiC whiskers from coal fly ash and water glass
	Luo, Yang 1,2; Zheng, Shili 1; Ma, Shuhua 1; Liu, Chunli 1,2; Ding, Jian 1; Wang, Xiaohui 1
刊名	CERAMICS INTERNATIONAL
	2018-06-15
卷号	44 期号:9 页码:10585-10595
关键词	Sic Whisker Coal Fly Ash Water Glass Alkali-activation Carbothermic Reduction
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.03.082
文献子类	Article
英文摘要	Highly crystalline, high-purity beta-SiC whiskers were successfully synthesised from a mixed sol of coal fly ash (CFA) and water glass (a silicon resource), and activated carbon (a carbon source) in a carbothermic reduction. The efficiency of the process is over 70%. The alkali activation effects of the water glass on CFA were characterised by FTIR and MAS-NMR. In the activation reaction, silicate frameworks of water glass and CFA became connected to form a large network, producing a stable, uniform sol system. Experiments and thermodynamic analyses were used to study the effects of Na2O, Al2O3, and Fe2O3 on the synthesis of beta-SiC whiskers, revealing that Na2O does not affect the synthesis process while Al2O3 and Fe2O3 promote the elongation of the SiC whiskers. The results of this study may not only help to reduce the production cost of SiC whiskers but also allow value to be extracted from waste.
WOS关键词	SILICON-CARBIDE ; SODIUM-SILICATE ; ADIABATIC FOAM ; STRUCTURAL-CHARACTERIZATION ; CARBOTHERMAL REDUCTION ; STACKING-FAULTS ; LOW-TEMPERATURE ; WASTE ; NANOWIRES ; MECHANISM
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000431470200073
资助机构	Major State Basic Research Development Program of China(2013CB632601)
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24426]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yang,Zheng, Shili,Ma, Shuhua,et al. Novel two-step process for synthesising beta-SiC whiskers from coal fly ash and water glass[J]. CERAMICS INTERNATIONAL,2018,44(9):10585-10595.
APA	Luo, Yang,Zheng, Shili,Ma, Shuhua,Liu, Chunli,Ding, Jian,&Wang, Xiaohui.(2018).Novel two-step process for synthesising beta-SiC whiskers from coal fly ash and water glass.CERAMICS INTERNATIONAL,44(9),10585-10595.
MLA	Luo, Yang,et al."Novel two-step process for synthesising beta-SiC whiskers from coal fly ash and water glass".CERAMICS INTERNATIONAL 44.9(2018):10585-10595.