danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2024-68-2-118-128dan-1182Research ArticleХИМИЯCHEMISTRYИсследование закономерностей синтеза адсорбентов на основе оксидов Li4Ti5O12 и Li2TiO3Studying the synthesis regularities of adsorbents based on the oxides Li4Ti5O12 and Li2TiO3https://orcid.org/0000-0002-3053-317XИванецА. И.IvanetsA. I.

Иванец Андрей Иванович – член-корреспондент, д-р хим. наук, профессор, вед. науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Andrei I. Ivanets – Corresponding Member, D. Sc. (Chemistry), Professor, Leading Researcher

9/1, Surganov Str., 220072, Minsk

andreiivanets@yandex.ruБичёваЕ. С.BichevaE. S.

Бичёва Екатерина Сергеевна – аспирант, мл. науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Ekaterina S. Bicheva – Postgraduate Student, Junior Researcher

9/1, Surganov Str., 220072, Minsk

biolog.ketri@yandex.ruПрозоровичВ. Г.ProzorovichV. G.

Прозорович Владимир Геннадьевич – науч. сотрудник

ул. Сурганова, 9/1, 220072, Минск

Vladimir G. Prozorovich – Researcher

9/1, Surganov Str., 220072, Minsk

vladimirprozorovich@gmail.comКузнецоваТ. Ф.KouznetsovaT. F.

Кузнецова Татьяна Федоровна – канд. хим. наук, доцент, заведующий лабораторией

ул. Сурганова, 9/1, 220072, Минск

Tatyana F. Kouznetsova – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory

9/1, Surganov Str., 220072, Minsk

tatyana.fk@gmail.comИнститут общей и неорганической химии Национальной академии наук БеларусиInstitute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus202429042024682118128Copyright © Иванец А.И., Бичёва Е.С., Прозорович В.Г., Кузнецова Т.Ф., 20242024Иванец А.И., Бичёва Е.С., Прозорович В.Г., Кузнецова Т.Ф.Ivanets A.I., Bicheva E.S., Prozorovich V.G., Kouznetsova T.F.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/1182

С использованием твердофазного, гидротермального и золь-гель методов синтеза получены адсорбенты на основе двойных оксидов Li2TiO3 и Li4Ti5O12. Изучено влияние условий синтеза образцов на их фазовый состав, морфологию поверхности, текстуру и адсорбционные свойства. Установлено, что в результате реакций твердофазного синтеза, инициированных нагреванием при 700 и 800 °С, получаются однофазные оксиды Li4Ti5O12 и Li2TiO3, значения параметра а кристаллической решетки которых близки к справочным данным и составляют 8,289 и 5,026 Å соответственно. Образцы имеют макромезопористую текстуру и обладают низкими значениями удельной поверхности (8 и 9 м2/г) и объема мезопор (0,01 и 0,02 см3/г). Адсорбционная емкость полученных оксидов Li4Ti5O12 и Li2TiO3 достигает 7,9 и 6,3 ммоль/г соответственно. Полученные оксиды представляют интерес для дальнейшего исследования в качестве селективных адсорбентов ионов Li+.

Using solid-phase, hydrothermal and sol-gel synthesis methods, adsorbents based on double oxides Li2TiO3 and Li4Ti5O12 were obtained. The influence of the synthesis conditions of samples on their phase composition, surface morphology, texture and adsorption properties was studied. It has been established that as a result of solid-phase synthesis reactions initiated by heating at 700 and 800 °C, single-phase oxides Li4Ti5O12 and Li2TiO3 are obtained, the values of the parameter a of the crystal lattice of which are close to the reference data and are 8.289 and 5.026 Å, respectively. The samples have a macromesoporous texture and have a low specific surface area (8 and 9 m2/g) and a mesopore volume (0.01 and 0.02 cm3/g). The adsorption capacity of the obtained oxides Li4Ti5O12 and Li2TiO3 reaches 7.9 and 6.3 mmol/g, respectively. The obtained oxides are of interest for further research as selective adsorbents of Li+ ions.

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