Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming | Sciact - CRIS-система Института катализа

Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming Научная публикация

Журнал

Nanomaterials
, E-ISSN: 2079-4991

Вых. Данные

Год: 2020, Том: 10, Номер: 7, Номер статьи : 1281, Страниц : 19 DOI: 10.3390/nano10071281

Ключевые слова

methane dry reforming; supercritical synthesis; fluorite; heterogeneous catalysis

Авторы

Simonov Mikhail ^1,2 , Bespalko Yulia ¹ , Smal Ekaterina ¹ , Valeev Konstantin ¹ , Fedorova Valeria ¹ , Krieger Tamara ^1,2 , Sadykov Vladislav ^1,2

Организации

1	Laboratory of Deep Oxidation Catalysts, Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2	Physical Department of Novosibirsk State University, 630090 Novosibirsk, Russia

Информация о финансировании (1)

Российский научный фонд

18-73-10167

Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols. Nickel was subsequently deposited by conventional insipient wetness impregnation. The oxides are comprised of ceria-zirconia solid solution with cubic fluorite phase. Negligible amounts of impurities of zirconia are observed for samples prepared by citrate route and doped by Ti. Supports prepared by supercritical synthesis are single-phased. XRD data, Raman, and UV-Vis DR (diffuse reflectance) spectroscopy suggest increasing lattice parameter and amount of oxygen vacancies in fluorite structure after Nb and Ti incorporation despite of the preparation method. These structural changes correlate with the catalytic activity in a methane dry reforming reaction. Catalysts synthesized under supercritical conditions are more active than the catalysts of the same composition prepared by the citrate route. The catalytic activity of samples doped with Ti and Nb is two times higher in terms of TOF (turnover frequency) and increased stability of these catalysts is attributed with the highest oxygen mobility being crucial for gasification of coke precursors.

Simonov M. , Bespalko Y. , Smal E. , Valeev K. , Fedorova V. , Krieger T. , Sadykov V.
Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming

Nanomaterials. 2020. V.10. N7. 1281 :1-19. DOI: 10.3390/nano10071281 WOS Scopus РИНЦ CAPlus PMID OpenAlex

Полный текст от издателя

Поступила в редакцию:	11 июн. 2020 г.
Принята к публикации:	28 июн. 2020 г.
Опубликована online:	30 июн. 2020 г.
Опубликована в печати:	1 июл. 2020 г.

Web of science:	WOS:000554229300001
Scopus:	2-s2.0-85087372327
РИНЦ:	43288875
Chemical Abstracts:	2020:1578254
PMID (PubMed):	32629866
OpenAlex:	W3039608125

БД	Цитирований
Scopus	29
Web of science	28
РИНЦ	26
OpenAlex	28