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In situ Raman spectroscopy investigation of the solubility and dissolution mechanism of 1,2-dichlorobenzene in hot compressed water in a fused silica capillary reactor
Bei, K1; Chen, J1; Wang, JL1; Chou, IM1; Yao, MH1; Pan, ZY1
2017
Source PublicationJOURNAL OF RAMAN SPECTROSCOPY
Volume48Issue:11Pages:1454-1458
Abstract

Hot compressed water (HCW), with its unique properties, is regarded as a promising solvent for industrial applications. A number of methods to measure the solubility of hydrophobic organic compounds (HOCs) in HCW have been reported. However, these methods were conducted in large-scale stainless-steel reactors, and few included an in situ study regarding the dissolution mechanism of HOCs in HCW during the solubility determination process. In this study, a fused silica capillary reactor in combination with Raman spectroscopy was applied to investigate phase changes, determine the solubility, and study the dissolution mechanism of 1,2-dichlorobenzene in HCW. The total dissolution process of 1,2-dichlorobenzene in HCW was observed under a microscope, and the images were recorded continuously using a digital camera. Raman spectroscopy was used to confirm the homogeneity of the 1,2-dichlorobenzene solution during dissolution. The solubility of 1,2-dichlorobenzene increased from 35.9 to 85.7mg g(-1) in water with increasing temperature from 256.7 to 294.1 degrees C. Furthermore, the dissolution mechanism of 1,2-dichlorobenzene in HCW is proposed based on the Raman spectra of 1,2-dichlorobenzene and water during the dissolution process in the fused silica capillary reactor. The breakage of the fully hydrogen-bonded (tetrahedral) configuration and the consequent change in the static dielectric constant of water are deemed to be compelling reasons for the high solubility of 1,2-dichlorobenzene in HCW. Our experimental method exhibits great potential for determining the solubility of HOCs in HCW and for investigating their dissolution behavior and dissolution mechanism at elevated pressure and temperature conditions. Copyright (c) 2017 John Wiley & Sons, Ltd.

KeywordHot Compressed Water 1 2-dichlorobenzene Solubility And Dissolution Mechanisms Fused Silica Capillary Reactor Raman Spectroscopy
DOI10.1002/jrs.5153
Indexed BySCI
Language英语
WOS KeywordSupercritical Water ; Subcritical Water ; Aqueous-solutions ; Liquid Water ; Degrees-c ; O-h ; Spectra ; Depolymerization ; Chlorobenzene ; Electrolytes
WOS IDWOS:000416235800012
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/5271
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.Zhejiang Univ Technol, Dept Environm Engn, Hangzhou 310032, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Peoples R China
3.Zhejiang Univ Technol, Coll Informat Engn, Hangzhou 310032, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Bei, K,Chen, J,Wang, JL,et al. In situ Raman spectroscopy investigation of the solubility and dissolution mechanism of 1,2-dichlorobenzene in hot compressed water in a fused silica capillary reactor[J]. JOURNAL OF RAMAN SPECTROSCOPY,2017,48(11):1454-1458.
APA Bei, K,Chen, J,Wang, JL,Chou, IM,Yao, MH,&Pan, ZY.(2017).In situ Raman spectroscopy investigation of the solubility and dissolution mechanism of 1,2-dichlorobenzene in hot compressed water in a fused silica capillary reactor.JOURNAL OF RAMAN SPECTROSCOPY,48(11),1454-1458.
MLA Bei, K,et al."In situ Raman spectroscopy investigation of the solubility and dissolution mechanism of 1,2-dichlorobenzene in hot compressed water in a fused silica capillary reactor".JOURNAL OF RAMAN SPECTROSCOPY 48.11(2017):1454-1458.
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