ntvНаучно-технический вестник информационных технологий, механики и оптикиScientific and Technical Journal of Information Technologies, Mechanics and Optics2226-14942500-0373Университет ИТМО10.17586/2226-1494-2023-23-4-696-702ntv-198Research ArticleОПТИЧЕСКИЕ СИСТЕМЫ И ТЕХНОЛОГИИOPTICAL ENGINEERINGНизкотемпературная ячейка для инфракрасных фурье-спектрометрических исследований углеводородных веществLow-temperature cell for IR Fourier spectrometric investigation of hydrocarbon substanceshttps://orcid.org/0000-0001-6803-5873КенбайА. А.KenbayA. A.

Кенбай Алишер Асылбекулы — докторант

Алматы, 050040

Alisher A. Kenbay — Doctoral Student

Almaty, 050040

mr.kenbay@gmail.comhttps://orcid.org/0000-0002-6691-8346ГоликовО. Ю.GolikovO. Yu.

Голиков Олег Юрьевич — младший научный сотрудник, докторант

sc 57843805800

Алматы, 050040

Oleg Yu. Golikov — Doctoral Student, Junior Researcher

sc 57843805800

Almaty, 050040

golikov@physics.kzhttps://orcid.org/0000-0002-5091-7699АлдияровА. У.AldiyarovA. U.

Алдияров Абдурахман Уалиевич — кандидат физико-математических наук, доцент, и.о. профессора

sc 16201950600

Алматы, 050040

Abdurakhman U. Aldiyarov — PhD (Physics & Mathematics), Associatу Professor, Acting Professor

sc 57843805800

Almaty, 050040

Abdurakhman.Aldiyarov@kaznu.kzhttps://orcid.org/0000-0002-2232-2911ЕрежепД. Е.YerezhepD. E.

Ережеп Дархан Есейұлы — кандидат технических наук, старший преподаватель, старший научный сотрудник; ведущий научный сотрудник; доцент

sc 57194012596

Алматы, 050040

Алматы, 050032

Алматы, 050013

Darkhan E. Yerezhep — PhD, Senior Lecturer; Leading Reseacher; Associate Professor

sc 57194012596

Almaty, 050040

Almaty, 050032

Almaty, 050013

darhan_13@physics.kzКазахский Национальный Университет им. аль-ФарабиКазахстанAl-Farabi Kazakh National UniversityKazakhstanКазахский Национальный Университет им. аль-Фараби; Физико-технический институт, КазНИТУ им. К. И. Сатпаева; КазНИТУ им. К. И. СатпаеваКазахстанAl-Farabi Kazakh National University; Institute of Physics and Technology, Satbayev University; Satbayev UniversityKazakhstan202314122024234696702Copyright © Кенбай А.А., Голиков О.Ю., Алдияров А.У., Ережеп Д.Е., 20242024Кенбай А.А., Голиков О.Ю., Алдияров А.У., Ережеп Д.Е.Kenbay A.A., Golikov O.Y., Aldiyarov A.U., Yerezhep D.E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ntv.elpub.ru/jour/article/view/198

Введение. Разработана специализированная низкотемпературная измерительная ячейка с криогенной капиллярной системой для инфракрасного спектрального анализа этанола. Созданная низкотемпературная ячейка может быть применена для исследований низкотемпературных свойств чистого этанола и смесей с его содержимым. Такое использование в настоящее время является актуальной задачей, а получаемые с ее помощью данные могут найти применение для исследования льдов. Метод. Выполнено сравнение двух методов исследования этанола при низкой температуре. В первом, предложенном методе применена специально разработанная низкотемпературная измерительная ячейка на базе приставки диффузного отражения Фурье‑спектрометра ФСМ 2203 с криогенной капиллярной системой. Использование системы позволило получить требуемый низкотемпературный режим при нормальном атмосферном давлении. Результаты эксперимента сопоставлены с традиционным методом газофазной конденсации исследуемого образца в условиях низкой температуры при давлении P = 1,0·10–5 торр. Результаты. Получены инфракрасные спектры низкомолекулярного аморфного и кристаллического этанола при температуре 150 К, нормальном атмосферном давлении и в вакууме. Сравнение экспериментальных результатов подтвердило работоспособность новой установки. В результате экспериментов наблюдались пики в полосах поглощения от 2850 до 3000 см–1 и от 2950 до 3100 см–1, соответствующие валентным СН-колебаниям этанола, а также в полосах поглощения от 3150 до 3400 см–1 и от 3300 до 3500 см–1, что соответствует валентным колебаниям ОН. Обсуждение. Полученные результаты показали перспективность предложенного метода и могут быть полезны исследователями в области низкотемпературной спектроскопии при нормальном давлении.

A specialized low-temperature measuring cell with a cryogenic capillary system for infrared spectral analysis of ethanol developed by the authors is presented. The use of the created low-temperature cell is possible for further studies of the low-temperature properties of both pure ethanol and mixtures with its contents, which is currently an urgent task, and the data obtained with its help can be used for ice research. Two methods of ethanol research at low temperature are presented in comparison. In the frst method proposed by the authors, a specially developed low-temperature measuring cell based on a diffuse refection prefx of the Fourier spectrometer FSM 2203 with a cryogenic capillary system is used. This system allows you to achieve the required low-temperature regime at normal atmospheric pressure. The results of the experiment are compared with the traditional method of gas-phase condensation of the test sample under low temperature conditions at the pressure P = 1.0·10–5 Torr. Infrared spectra of low molecular weight amorphous and crystalline ethanol were obtained at a temperature of 150 K at normal atmospheric pressure and in vacuum. Comparison of experimental results confrmed the operability of the new installation. In the experiments, peaks were observed in the absorption bands from 2850 to 3000 cm–1 and from 2950 to 3100 cm–1, corresponding to the valence CH vibrations of ethanol as well as in the absorption bands from 3150 to 3400 cm–1 and from 3300 to 3500 cm–1, which corresponds to the valence vibrations of OH. The results of the study showed the prospects of the proposed method and can be useful by researchers in the feld of low-temperature spectroscopy at normal pressure.

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The authors declare that there are no conflicts of interest present.