CAS OpenIR
Design Optimization of Deep Eutectic Solvent Composition and Separation Performance of Cyclohexane and Benzene Mixtures with Extractive Distillation
Bai, Fang1,2,3; Hua, Chao1,3; Bai, Yongzhi4; Ma, Mengying5
2021-10-01
Source PublicationPROCESSES
Volume9Issue:10Pages:20
AbstractDeep eutectic solvents (DESs) have properties that make them suitable candidates to be used as entrainers for extractive distillation. In the previous work, it was proven that DES(1:2) (tetrabutylammonium bromide: levulinic acid, 1:2, molar ratio) can break the cyclohexane-benzene azeotrope. In the present work, the HBA and HBD ratio and molar concentration of DES were optimized to obtain a better constitute and condition of DES to be utilized in cyclohexane and benzene extractive distillation. The physical properties and structure of the prepared DESs were characterized. Vapor-liquid equilibrium data of the ternary system (benzene + cyclohexane + DESs) were also measured at atmospheric pressure. All experimental equilibrium data were correlated with Wilson, nonrandom two-liquid (NRTL), and universal quasichemical (UNIQUAC) activity coefficient models, from which the coefficient of determination (R2) of the three pseudo-ternary systems fitting was calculated. From the obtained results, the best HBA and HBD ratio in the DESs is elucidated as 1:2, the best molar concentration of DES is 0.1, and the NRTL model predicts the experimental data more accurately than the Wilson and UNIQUAC models. From the derived mechanism, the formation of stronger hydrogen bond and pi-pi bond interactions between DES and benzene is obtained when HBA and HBD ratio in DES is 1:2. In other conditions, the azeotrope cannot be broken, or the efficiency is low. The present work provides an environmentally friendly method to separate aromatic/aliphatic mixtures and act as a guide for further study of DESs in extractive distillation.

Keyworddeep eutectic solvents extractive distillation separation (vapor + liquid) equilibrium cyclohexane benzene
DOI10.3390/pr9101706
Language英语
WOS KeywordLIQUID-EQUILIBRIUM DATA ; CHOLINE CHLORIDE ; DIFFERENT TEMPERATURES ; BIOACTIVE FLAVONOIDS ; EFFICIENT EXTRACTION ; PHENOLIC-COMPOUNDS ; GREEN ; SYSTEMS ; HEXANE ; MEDIA
Funding ProjectNational Key Research and Development Program of China[2019YFC1907600] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM2020C08] ; Regional Key Projects of Science and Technology Service network Program (STS), Chinese Academy of Sciences[KFJ-STS-QYZD-2021-14-002]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Research and Development Program of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Regional Key Projects of Science and Technology Service network Program (STS), Chinese Academy of Sciences
WOS IDWOS:000712826100001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50805
Collection中国科学院过程工程研究所
Corresponding AuthorHua, Chao; Bai, Yongzhi
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Mfg, Beijing 100190, Peoples R China
4.Tian Yu Co Ltd, China Bldg Mat Test & Certificat Grp, Beijing 101113, Peoples R China
5.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Bai, Fang,Hua, Chao,Bai, Yongzhi,et al. Design Optimization of Deep Eutectic Solvent Composition and Separation Performance of Cyclohexane and Benzene Mixtures with Extractive Distillation[J]. PROCESSES,2021,9(10):20.
APA Bai, Fang,Hua, Chao,Bai, Yongzhi,&Ma, Mengying.(2021).Design Optimization of Deep Eutectic Solvent Composition and Separation Performance of Cyclohexane and Benzene Mixtures with Extractive Distillation.PROCESSES,9(10),20.
MLA Bai, Fang,et al."Design Optimization of Deep Eutectic Solvent Composition and Separation Performance of Cyclohexane and Benzene Mixtures with Extractive Distillation".PROCESSES 9.10(2021):20.
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