Kinetics of thorium extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate from nitric acid medium

	Kinetics of thorium extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate from nitric acid medium
	Wang YL ; Li YL ; Li DQ ; Liao WP
刊名	hydrometallurgy
	2013
卷号	140 页码:66-70
关键词	CONSTANT INTERFACIAL CELL MASS-TRANSFER KINETICS LAMINAR-FLOW SOLVENT-EXTRACTION MECHANISM SYSTEM DODECANE
ISSN号	0304-386x
通讯作者	li dq
中文摘要	the extraction kinetics of thorium (iv) by di-(2-ethylhexyl) 2-ethylhexyl phosphonate (dehehp) in n-heptane from nitric acid medium was investigated by using a constant interfacial cell with laminar flow. parameters affecting the mass transfer mechanism such as stirring rate, temperature, specific interfacial area, th (iv) concentration, dehehp concentration, and interfacial tension were studied. the rate equation of extracting thorium determined by slope analysis was as follows: -d[th]/dt = k(0)center dot[th4+](0.72)center dot b-0 80 center dot [no3-](0 82). the extraction regime was deduced to be mixed controlled by investigating the influence of stirring rate on extraction rate and by considering the activation energy (e-a; 27.46 kj/mol). the extraction rate was independent of the specific interfacial area, which indicated that the bulk phase was the reaction zone. furthermore, thorium extraction increased the specific gravity (d) of the organic phase and interfacial tension (gamma). (c) 2013 elsevier b.v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000328588700009
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49493]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Wang YL,Li YL,Li DQ,et al. Kinetics of thorium extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate from nitric acid medium[J]. hydrometallurgy,2013,140:66-70.
APA	Wang YL,Li YL,Li DQ,&Liao WP.(2013).Kinetics of thorium extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate from nitric acid medium.hydrometallurgy,140,66-70.
MLA	Wang YL,et al."Kinetics of thorium extraction with di-(2-ethylhexyl) 2-ethylhexyl phosphonate from nitric acid medium".hydrometallurgy 140(2013):66-70.