Design of Ni-Based Catalysts Supported over Binary La-Ce Oxides: Influence of La/Ce Ratio on the Catalytic Performances in DRM | Sciact - CRIS-система Института катализа

Design of Ni-Based Catalysts Supported over Binary La-Ce Oxides: Influence of La/Ce Ratio on the Catalytic Performances in DRM Научная публикация

Журнал

Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308

Вых. Данные

Год: 2021, Том: 382, Страницы: 71-81 Страниц : 11 DOI: 10.1016/j.cattod.2021.07.012

Ключевые слова

Dry reforming of methane (DRM); Ni-based catalysts; La2O3-CeO2 binary oxide, solid solution

Авторы

Grabchenko M. ¹ , Pantaleo G. ² , Puleo F. ² , Kharlamova T.S. ¹ , Zaikovskii V.I. ^3,4 , Vodyankina O. ¹ , Liotta L.F. ²

Организации

1	Tomsk State University, 36, Lenin ave., 634050 Tomsk, Russia
2	Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, via Ugo La Malfa, 153, 90146 Palermo, Italy
3	Boreskov Institute of Catalysis SB RAS, 5, Lavrentiev ave., 630090 Novosibirsk, Russia
4	Novosibirsk State University, 2, Pirogov Str., 630090 Novosibirsk, Russia

Информация о финансировании (2)

1	Российский научный фонд	19-73-30026 (АААА-А19-119052990037-6)
2	Ministry of Education, Universities and Research	ARS01_00637

CeO2 and binary La2O3-CeO2 oxides, with different La/Ce atomic ratios (1:4; 1:1; 4:1), were synthesized using sol-gel method in the presence of citric acid in ammonia solution, at pH~9, and Ni (10 wt%) was added by wetness impregnation method. The physical-chemical properties, catalytic activity and long-run stability of the prepared catalysts were evaluated in DRM reaction. Characterizations of both fresh and spent catalysts were carried out using low-temperature N2 adsorption, XRD, TGA, TPR, Raman and TEM analyses. The DRM gradient catalytic tests performed in the range of 400–800 °C revealed higher catalytic conversions for Ni/La2O3-CeO2 catalysts, especially for those with La/Ce ratio 1:4 and 1:1. The stable conversions of CH4 and CO2 (long run at 650 °C for 24 h) registered for such Ni/La2O3-CeO2 catalysts were attributed to the presence of small Ni crystallites. During long run tests, Ni/La2O3-CeO2 catalysts, with La/Ce atomic ratios 1:4 and 1:1, formed the same types of carbon, both as filaments and layered carbon with graphene structure, but their catalytic activity was retained. Ni/CeO2 showed the smallest content of carbon, however, exhibited lower CH4 and CO2 conversions in comparison with the Ni-La2O3-CeO2 systems, due to the presence of big Ni particles with sizes of up to 0.5 µm.

Grabchenko M. , Pantaleo G. , Puleo F. , Kharlamova T.S. , Zaikovskii V.I. , Vodyankina O. , Liotta L.F.
Design of Ni-Based Catalysts Supported over Binary La-Ce Oxides: Influence of La/Ce Ratio on the Catalytic Performances in DRM
Catalysis Today. 2021. V.382. P.71-81. DOI: 10.1016/j.cattod.2021.07.012 WOS Scopus РИНЦ CAPlusCA OpenAlex

Поступила в редакцию:	29 апр. 2021 г.
Принята к публикации:	9 июл. 2021 г.
Опубликована online:	14 июл. 2021 г.
Опубликована в печати:	15 дек. 2021 г.

Web of science:	WOS:000707642300001
Scopus:	2-s2.0-85111007876
РИНЦ:	46971579
Chemical Abstracts:	2021:1727397
Chemical Abstracts (print):	178:55769
OpenAlex:	W3183893369

БД	Цитирований
Scopus	23
Web of science	18
РИНЦ	25
OpenAlex	25