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Synthesis and Oxygen Mobility of Bismuth Cerates and Titanates with Pyrochlore Structure Научная публикация

Журнал Membranes
ISSN: 2077-0375
Вых. Данные Год: 2023, Том: 13, Номер: 6, Номер статьи : 598, Страниц : 13 DOI: 10.3390/membranes13060598
Ключевые слова oxygen separation membranes; pyrochlores; bismuth cerate; bismuth titanate; oxygen mobility
Авторы Bespalko Yuliya 1 , Eremeev Nikita 1 , Sadovskaya Ekaterina 1 , Krieger Tamara 1 , Bulavchenko Olga 1 , Suprun Evgenii 1 , Mikhailenko Mikhail 2 , Korobeynikov Mikhail 3 , Sadykov Vladislav 1
Организации
1 Federal Research Center, Boreskov Institute of Catalysis SB RAS, Novosibirsk, Akad. Lavrentieva Ave. 5, 630090 Novosibirsk, Russia
2 Institute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze Str. 18, 630128 Novosibirsk, Russia
3 Budker Institute of Nuclear Physics SB RAS, Akad. Lavrentieva Ave. 11, 630090 Novosibirsk, Russia

Информация о финансировании (1)

1 Российский научный фонд 23-73-00045

Реферат: Synthesis and study of materials based on bismuth cerates and titanates were carried out. Complex oxides Bi1.6Y0.4Ti2O7 were synthesized by the citrate route; Bi2Ce2O7 and Bi1.6Y0.4Ce2O7—by the Pechini method. The structural characteristics of materials after conventional sintering at 500–1300 °C were studied. It is demonstrated that the formation of a pure pyrochlore phase, Bi1.6Y0.4Ti2O7, occurs after high-temperature calcination. Complex oxides Bi2Ce2O7 and Bi1.6Y0.4Ce2O7 have a pyrochlore structure formed at low temperatures. Yttrium doping of bismuth cerate lowers the formation temperature of the pyrochlore phase. As a result of calcination at high temperatures, the pyrochlore phase transforms into the CeO2-like fluorite phase enriched by bismuth oxide. The influence of radiation-thermal sintering (RTS) conditions using e-beams was studied as well. In this case, dense ceramics are formed even at sufficiently low temperatures and short processing times. The transport characteristics of the obtained materials were studied. It has been shown that bismuth cerates have high oxygen conductivity. Conclusions are drawn about the oxygen diffusion mechanism for these systems. The materials studied are promising for use as oxygen-conducting layers in composite membranes.
Библиографическая ссылка: Bespalko Y. , Eremeev N. , Sadovskaya E. , Krieger T. , Bulavchenko O. , Suprun E. , Mikhailenko M. , Korobeynikov M. , Sadykov V.
Synthesis and Oxygen Mobility of Bismuth Cerates and Titanates with Pyrochlore Structure
Membranes. 2023. V.13. N6. 598 :1-13. DOI: 10.3390/membranes13060598 WOS Scopus РИНЦ CAPlus PMID OpenAlex
Даты:
Поступила в редакцию: 5 мая 2023 г.
Принята к публикации: 9 июн. 2023 г.
Опубликована в печати: 13 июн. 2023 г.
Опубликована online: 13 июн. 2023 г.
Идентификаторы БД:
Web of science: WOS:001014639600001
Scopus: 2-s2.0-85163927408
РИНЦ: 54006871
Chemical Abstracts: 2023:1401734
PMID (PubMed): 37367802
OpenAlex: W4380686503
Цитирование в БД:
БД Цитирований
РИНЦ 3
OpenAlex 2
Scopus 1
Web of science 2
Альметрики: