QQ客服 官方微博 反馈留言

	Synthesis and crystallization kinetics of the novel ion exchanger Na4Ti4Si3O10 for cesium removal
	Yu, Bo ; Chen, Jin ; Song, Congli
	2010-05-10 ; 2010-05-10
关键词	SILICOTITANATES Chemistry, Analytical Chemistry, Inorganic & Nuclear Nuclear Science & Technology
中文摘要	Thermodynamics and crystallization kinetics of the hydrothermal synthesis of Na4Ti4Si3O10 (NaTS) were systemically studied by both experiments and model simulation. Experimental results showed that the curve of crystallinity with time was a characteristic sigmoid in the shape that indicated the crystallization of Na4Ti4Si3O10 was a typical spontaneous nucleation process on the laboratory scale. Crystallization of NaTS belongs to the liquid-liquid transformation mechanism and the reaction is endothermic (Delta H = 15.3 kJ/mol). A mathematic model of crystallization kinetics was developed to simulate the synthesis of NaTS. Runge-Kutta and simplex methods were adopted to solve the partial differential equations. Model results fitted well with the experimental data and showed that the synthesis process belongs to spontaneous nucleation and crystal growth. Moreover, the very small crystal growth constant (5.6(.)10(-7)) and gel dissolution constant (7.0(.)10(-7)) indicate they are the rate-limiting steps of the whole synthesis process.
语种	英语 ; 英语
出版者	SPRINGER ; DORDRECHT ; VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22665]
专题	清华大学
推荐引用方式 GB/T 7714	Yu, Bo,Chen, Jin,Song, Congli. Synthesis and crystallization kinetics of the novel ion exchanger Na4Ti4Si3O10 for cesium removal[J],2010, 2010.
APA	Yu, Bo,Chen, Jin,&Song, Congli.(2010).Synthesis and crystallization kinetics of the novel ion exchanger Na4Ti4Si3O10 for cesium removal..
MLA	Yu, Bo,et al."Synthesis and crystallization kinetics of the novel ion exchanger Na4Ti4Si3O10 for cesium removal".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

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。