Spectroscopic study on variations in illite surface properties after acid-base titration

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Spectroscopic study on variations in illite surface properties after acid-base titration
	Liu, WX; Coveney, RM; Tang, HX
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2003
卷号	15 期号:4 页码:456-463
关键词	natural illite acid-base titration spectroscopic information surface Al-Si species surface complexation
英文摘要	FT-IR, Raman microscopy, XRD, Si-29 and Al-27 MAS NMR, were used to investigate changes in surface properties of a natural illite sample after acid-base potentiometric titration. The characteristic XRD lines indicated the presence of surface Al-Si complexes, preferable to At (OH)3 precipitates. In the microscopic Raman spectra, the vibration peaks of Si-O and Al-O bonds diminished as a result of treatment with acid, then increased after hydroxide back titration. The varied ratio of signal intensity between Al-IV and Al-VI species in Al-27 MAS NMR spectra, together with the stable BET surface area after acidimetric titration, suggested that edge faces and basal planes in the layer structure of illite participated in dissolution of structural components. The combined spectroscopic evidence demonstrated that the reactions between illite surfaces and acid-leaching silicic acid and aluminum ions should be considered in the model description of surface acid-base properties of the aqueous illite.
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000183973500004
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23724]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Liu, WX,Coveney, RM,Tang, HX. Spectroscopic study on variations in illite surface properties after acid-base titration[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2003,15(4):456-463.
APA	Liu, WX,Coveney, RM,&Tang, HX.(2003).Spectroscopic study on variations in illite surface properties after acid-base titration.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,15(4),456-463.
MLA	Liu, WX,et al."Spectroscopic study on variations in illite surface properties after acid-base titration".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 15.4(2003):456-463.