Separation of Benzene-Cyclohexane Azeotropes Via Extractive Distillation Using Deep Eutectic Solvents as Entrainers

doi:10.3390/pr9020336

	Separation of Benzene-Cyclohexane Azeotropes Via Extractive Distillation Using Deep Eutectic Solvents as Entrainers
	Bai, Fang 1,2,3; Hua, Chao 1,3; Li, Jing 1,2,3
刊名	PROCESSES
	2021-02-01
卷号	9 期号:2 页码:13
关键词	benzene cyclohexane deep eutectic solvents (DES) extractive distillation entrainer
DOI	10.3390/pr9020336
英文摘要	The separation of benzene and cyclohexane azeotrope is one of the most challenging processes in the petrochemical industry. In this paper, deep eutectic solvents (DES) were used as solvents for the separation of benzene and cyclohexane. DES1 (1:2 mix of tetrabutylammonium bromide (TBAB) and levulinic acid (LA)), DES2 (1:2 mix of TBAB and ethylene glycol (EG)) and DES3 (1:2 mix of ChCl (choline chloride) and LA) were used as entrainers, and vapor-liquid equilibrium (VLE) measurements at atmospheric pressure revealed that a DES comprised of a 2:1 ratio of LA and TBAB could break this azeotrope with relative volatility (alpha ij) up to 4.763. Correlation index suggested that the NRTL modelling approach fitted the experimental data very well. Mechanism of extractive distillation gained from FT-IR revealed that with hydrogen bonding and pi-pi bond interactions between levulinic acid and benzene could be responsible for the ability of this entrainer to break the azeotrope.
资助项目	National Key Research and Development Program of China[2019YFC1907600]
WOS研究方向	Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000623172400001
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43539]
专题	中国科学院过程工程研究所
通讯作者	Hua, Chao
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Bai, Fang,Hua, Chao,Li, Jing. Separation of Benzene-Cyclohexane Azeotropes Via Extractive Distillation Using Deep Eutectic Solvents as Entrainers[J]. PROCESSES,2021,9(2):13.
APA	Bai, Fang,Hua, Chao,&Li, Jing.(2021).Separation of Benzene-Cyclohexane Azeotropes Via Extractive Distillation Using Deep Eutectic Solvents as Entrainers.PROCESSES,9(2),13.
MLA	Bai, Fang,et al."Separation of Benzene-Cyclohexane Azeotropes Via Extractive Distillation Using Deep Eutectic Solvents as Entrainers".PROCESSES 9.2(2021):13.