Surface chemistry aspects of bastnaesite flotation with octyl hydroxamate

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	Surface chemistry aspects of bastnaesite flotation with octyl hydroxamate
	Zhang, Xia 1; Du, Hao 2; Wang, Xuming 1; Miller, J. D.1
刊名	INTERNATIONAL JOURNAL OF MINERAL PROCESSING
	2014-12-10
卷号	133 期号:DEC.页码:29-38
关键词	Octyl hydroxamate adsorption Bastnaesite Contact angle MDS SFVS
ISSN号	0301-7516
其他题名	Int. J. Miner. Process.
中文摘要	Surface chemistry features of bastnaesite were investigated with respect to octyl hydroxamate adsorption and the wetting characteristics at different levels of hydroxamate adsorption. The wetting characteristics of bastnaesite in the absence of collector adsorption were examined using both contact angle measurements and MD simulations. As expected, it was found that bastnaesite is naturally hydrophilic. Surface chemistry studies included octyl hydroxamate adsorption by the solution depletion method. The surface state was described by sum-frequency vibrational spectroscopy (SFVS) and molecular dynamic simulations (MDS). The adsorption isotherm at low levels of hydroxamate adsorption was established and the hydrophobic surface state was described from contact angle measurements. The relationship between hydrophobicity and adsorption density was examined for the first time by MD simulations. The SFVS spectra indicate that a well-ordered monolayer was formed at a hydroxamate concentration of about 1 x 10(-4) M. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	Surface chemistry features of bastnaesite were investigated with respect to octyl hydroxamate adsorption and the wetting characteristics at different levels of hydroxamate adsorption. The wetting characteristics of bastnaesite in the absence of collector adsorption were examined using both contact angle measurements and MD simulations. As expected, it was found that bastnaesite is naturally hydrophilic. Surface chemistry studies included octyl hydroxamate adsorption by the solution depletion method. The surface state was described by sum-frequency vibrational spectroscopy (SFVS) and molecular dynamic simulations (MDS). The adsorption isotherm at low levels of hydroxamate adsorption was established and the hydrophobic surface state was described from contact angle measurements. The relationship between hydrophobicity and adsorption density was examined for the first time by MD simulations. The SFVS spectra indicate that a well-ordered monolayer was formed at a hydroxamate concentration of about 1 x 10(-4) M. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Chemical ; Mineralogy ; Mining & Mineral Processing
研究领域[WOS]	Engineering ; Mineralogy ; Mining & Mineral Processing
关键词[WOS]	SUM-FREQUENCY SPECTROSCOPY ; MOLECULAR-DYNAMICS SIMULATION ; VIBRATIONAL SPECTROSCOPY ; SULFURIC-ACID ; COMPUTER-SIMULATION ; ADSORPTION ; INTERFACE ; WATER ; CONFORMATION ; SYSTEMS
收录类别	SCI
原文出处	://WOS:000346552400004
语种	英语
WOS记录号	WOS:000346552400004
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11892]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Univ Utah, Coll Mines & Earth Sci, Dept Met Engn, Salt Lake City, UT 84112 USA 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xia,Du, Hao,Wang, Xuming,et al. Surface chemistry aspects of bastnaesite flotation with octyl hydroxamate[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2014,133(DEC.):29-38.
APA	Zhang, Xia,Du, Hao,Wang, Xuming,&Miller, J. D..(2014).Surface chemistry aspects of bastnaesite flotation with octyl hydroxamate.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,133(DEC.),29-38.
MLA	Zhang, Xia,et al."Surface chemistry aspects of bastnaesite flotation with octyl hydroxamate".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 133.DEC.(2014):29-38.