Sciact
  • EN
  • RU

Thermochemical study of some thiocyanate protic ionic liquids for evaluation of their temperature operating window Научная публикация

Журнал Journal of Molecular Liquids
ISSN: 0167-7322 , E-ISSN: 1873-3166
Вых. Данные Год: 2025, Том: 429, Номер статьи : 127657, Страниц : DOI: 10.1016/j.molliq.2025.127657
Авторы Magsumov T.I. 1 , Gainutdinov B.R. 1 , Larionov R.A. 1 , Klimovitsky A.E. 1 , Andreev I.A. 2 , Ratmanova N.K. 2 , Ivanova O.A. 3 , Trushkov I.V. 1,4 , Sedov I.A. 1
Организации
1 Chemical Institute, Kazan Federal University, Kremlevskaya Str., 18, Kazan 420008, Russian Federation
2 Organic Chemistry Department, Science Faculty, Patrice Lumumba Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, Moscow 117198, Russia
3 Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie gory 1-3, 119991 Moscow, Russian Federation
4 N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, 119991 Moscow, Russian Federation

Реферат: We studied the thermochemical properties of eight thiocyanate (SCN) protic ionic liquids or molten salts with diverse cation structures: 1-methylimidazolium ([MIm]), 1-ethylimidazolium ([EIm]), n-butylammonium ([BA]), triethylammonium ([TEA]), diisopropylethylammonium ([DIPEA]), guanidinium ([Gu]), 1,1,3,3-tetramethylguanidinium ([TMG]), and thiazolium ([Tz]) thiocyanates. The temperature and enthalpy of phase transitions of the ionic liquids were determined by differential scanning calorimetry. The thermal stability was investigated by thermogravimetric analysis (TGA) in dynamic (heating from 30 to 500 °C) and isothermal (keeping at 120 °C) modes. In dynamic experiments, the stability was shown to increase in the order [Tz][SCN] < [BA][SCN] < [TEA][SCN] ≈ [DIPEA][SCN] < [MIm][SCN] ≈ [EIm][SCN] < [TMG][SCN] ≈ [Gu][SCN]. [Tz][SCN] and [DIPEA][SCN] were found to start decomposing below their melting temperature. Isothermal experiments have shown long-term thermal stability of [MIm][SCN], [EIm][SCN], [TEA][SCN], [TMG][SCN], and [Gu][SCN] in a wide range of temperatures above the melting point, which makes them promising for extraction, separation, catalytic reactions, and other industrial or laboratory applications. The obtained results can be used to select the optimum conditions for these processes and for the regeneration of ionic liquids.
Библиографическая ссылка: Magsumov T.I. , Gainutdinov B.R. , Larionov R.A. , Klimovitsky A.E. , Andreev I.A. , Ratmanova N.K. , Ivanova O.A. , Trushkov I.V. , Sedov I.A.
Thermochemical study of some thiocyanate protic ionic liquids for evaluation of their temperature operating window
Journal of Molecular Liquids. 2025. V.429. 127657 . DOI: 10.1016/j.molliq.2025.127657 Scopus OpenAlex
Идентификаторы БД:
Scopus: 2-s2.0-105003952928
OpenAlex: W4409744305
Цитирование в БД:
БД Цитирований
Scopus 3
OpenAlex 3
Альметрики: