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Elucidating the triethylammonium acetate system: Is it molecular or is it ionic?
Berton, Paula1,5; Kelley, Steven P.1,6; Wang, Hui2,3; Rogers, Robin D.1,2,4
2018-11-01
Source PublicationJOURNAL OF MOLECULAR LIQUIDS
ISSN0167-7322
Volume269Pages:126-131
Abstract

The speciation of protic ionic liquids (ILs) has attracted high attention in the recent years, due to its effect in the properties of the resulting liquids. In this work we analyze the behavior of mixtures between triethylamine (N-222) and acetic acid (HOAc), a system that generates controversy about its speciation. Using different synthetic strategies, liquids were obtained with molar compositions that were always between 1:2 and 1:4 mol/mol N-222: HOAc. However, the experimentally observed normal boiling points indicate that the actual IL has a molar composition of 1:4 N-222: [HOAc]/[OAc](-). Furthermore, when the synthesized liquid is mixed with the aprotic IL 1 ethyl 3 methylimidazolium acetate, more triethylamine is expelled, indicating that the excess N-222 forms an IHN222](+) N-222 complex rather than becoming ionized by the remaining HOAc present in the system. Our experimental data emphasizes the consideration of these systems not as mere "mixtures of ions and non-ionized molecules," but as complex systems of oligomeric ions, with distinctive and characteristic properties. (C) 2018 Elsevier B.V. All rights reserved.

KeywordAcetic Acid Oligomeric Ions Protic Ionic Liquid Speciation Triethylamine
DOI10.1016/j.molliq.2018.08.006
Language英语
WOS KeywordCarboxylic-acids ; Liquids ; Conductivity ; Solubility ; Mixtures ; Behavior ; Salts
Funding ProjectNovartis-Massachusetts Institute of Technology (MIT) Center for Continuous Manufacturing (CCM) ; Novartis International AG ; Canada Excellence Research Chair Program
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
Funding OrganizationNovartis-Massachusetts Institute of Technology (MIT) Center for Continuous Manufacturing (CCM) ; Novartis International AG ; Canada Excellence Research Chair Program
WOS IDWOS:000447482500014
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26157
Collection中国科学院过程工程研究所
Corresponding AuthorRogers, Robin D.
Affiliation1.McGill Univ, Dept Chem, 801 Sherbrooke St West, Montreal, PQ H3A 0B8, Canada
2.Univ Alabama, Dept Chem, Box 870336, Tuscaloosa, AL 35487 USA
3.Chinese Acad Sci, Inst Proc Engn, 1 Beierjie Zhongguancun, Beijing 100190, Peoples R China
4.525 Solut Inc, POB 2206, Tuscaloosa, AL 35403 USA
5.Univ Calgary, Chem & Petr Engn Dept, Calgary, AB T2N 1N4, Canada
6.Univ Missouri, Dept Chem, Columbia, MO 65211 USA
Recommended Citation
GB/T 7714
Berton, Paula,Kelley, Steven P.,Wang, Hui,et al. Elucidating the triethylammonium acetate system: Is it molecular or is it ionic?[J]. JOURNAL OF MOLECULAR LIQUIDS,2018,269:126-131.
APA Berton, Paula,Kelley, Steven P.,Wang, Hui,&Rogers, Robin D..(2018).Elucidating the triethylammonium acetate system: Is it molecular or is it ionic?.JOURNAL OF MOLECULAR LIQUIDS,269,126-131.
MLA Berton, Paula,et al."Elucidating the triethylammonium acetate system: Is it molecular or is it ionic?".JOURNAL OF MOLECULAR LIQUIDS 269(2018):126-131.
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