Phase Equilibria for the Glycine-Methanol-NH4Cl-H2O System

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	Phase Equilibria for the Glycine-Methanol-NH4Cl-H2O System
	Zeng, Yan 1; Li, Zhibao 1; Demopoulos, George P.2
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2014-10-29
卷号	53 期号:43 页码:16864-16872
关键词	PARTIAL MOLAL PROPERTIES AMINO-ACIDS HIGH-PRESSURES ACTIVITY-COEFFICIENTS TRANSPORT-PROPERTIES AQUEOUS-SOLUTIONS SOLUBILITY GLYCINE WATER TEMPERATURES
ISSN号	0888-5885
其他题名	Ind. Eng. Chem. Res.
中文摘要	An investigation of the phase equilibria of the glycinemethanolNH(4)ClH(2)O system was carried out with the objective of optimizing the monochloroacetic acid (MCA) process for the production of glycine. Phase equilibrium of the glycineNH(4)ClH(2)O system at temperatures over the range of 283.2353.2 K was determined for concentrations ranging up to the multiple saturation points. The solubilities of both glycine and NH4Cl were found to increase with increasing temperature, as well as with increasing concentration of other solutes. The BromleyZemaitis model for ions and the Pitzer formulation for glycine neutral species implemented in the OLI platform were used in the regression of the experimental solubilities. The average absolute deviations between the regressed solubility values and the experimental data were found to be 1.4% for glycine and 0.93% for NH4Cl. Three binary interaction parameters of the Pitzer formulation were newly obtained and coupled with the BromleyZemaitis parameters documented in OLIs databank to predict the multiple saturation points of the system. Additionally, the solubility of glycine in methanolH(2)O mixtures was also measured from 283.2 to 323.2 K, and a sharp decline was observed as a function of the content of methanol. Such thermodynamic information is definitely useful for improving the existing industrial process, as well as providing fundamentals for the development of new glycine production processes.
英文摘要	An investigation of the phase equilibria of the glycinemethanolNH(4)ClH(2)O system was carried out with the objective of optimizing the monochloroacetic acid (MCA) process for the production of glycine. Phase equilibrium of the glycineNH(4)ClH(2)O system at temperatures over the range of 283.2353.2 K was determined for concentrations ranging up to the multiple saturation points. The solubilities of both glycine and NH4Cl were found to increase with increasing temperature, as well as with increasing concentration of other solutes. The BromleyZemaitis model for ions and the Pitzer formulation for glycine neutral species implemented in the OLI platform were used in the regression of the experimental solubilities. The average absolute deviations between the regressed solubility values and the experimental data were found to be 1.4% for glycine and 0.93% for NH4Cl. Three binary interaction parameters of the Pitzer formulation were newly obtained and coupled with the BromleyZemaitis parameters documented in OLIs databank to predict the multiple saturation points of the system. Additionally, the solubility of glycine in methanolH(2)O mixtures was also measured from 283.2 to 323.2 K, and a sharp decline was observed as a function of the content of methanol. Such thermodynamic information is definitely useful for improving the existing industrial process, as well as providing fundamentals for the development of new glycine production processes.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	PARTIAL MOLAL PROPERTIES ; AMINO-ACIDS ; HIGH-PRESSURES ; ACTIVITY-COEFFICIENTS ; TRANSPORT-PROPERTIES ; AQUEOUS-SOLUTIONS ; SOLUBILITY ; GLYCINE ; WATER ; TEMPERATURES
收录类别	SCI
原文出处	://WOS:000344042700030
语种	英语
WOS记录号	WOS:000344042700030
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11884]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.McGill Univ, Dept Min & Mat Engn, Montreal, PQ H3A 2B2, Canada
推荐引用方式 GB/T 7714	Zeng, Yan,Li, Zhibao,Demopoulos, George P.. Phase Equilibria for the Glycine-Methanol-NH4Cl-H2O System[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(43):16864-16872.
APA	Zeng, Yan,Li, Zhibao,&Demopoulos, George P..(2014).Phase Equilibria for the Glycine-Methanol-NH4Cl-H2O System.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(43),16864-16872.
MLA	Zeng, Yan,et al."Phase Equilibria for the Glycine-Methanol-NH4Cl-H2O System".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.43(2014):16864-16872.