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Cobalt–Aluminum co-Precipitated Catalysts and Their Performance in the Fischer–Tropsch Synthesis Научная публикация

Общее Язык: Английский, Жанр: Статья (Full article),
Статус опубликования: Опубликована, Оригинальность: Оригинальная
Журнал Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
Вых. Данные Год: 2001, Том: 168, Номер: 1-2, Страницы: 193-207 Страниц : 15 DOI: 10.1016/S1381-1169(00)00529-X
Ключевые слова Alumina, Cobalt, Fischer-Tropsch, Metal-support interaction, Spinels
Авторы Khassin Alexander A. 1 , Yurieva Tamara M. 1 , Kustova Galina N. 1 , Itenberg Izabella Sh. 1 , Demeshkina Margarita P. 1 , Krieger Tamara A. 1 , Plyasova Lyudmila M. 1 , Chermashenczeva Galina K. 1 , Parmon Valentin N. 1
Организации
1 Boreskov Institute of Catalysis, 5, Pr. Lavrentieva, Novosibirsk 630090, Russia

Реферат: Cobalt–aluminum catalysts were prepared using either Co2+ precipitation onto freshly prepared Mg–Al or Zn–Al hydrotalcite (promoted samples) or co-precipitation of Co2+ and Al3+ (non-promoted samples). The evolution of initial hydrotalcite structure was monitored during its calcination and reductive treatment. It has been shown that, at moderate temperatures, hydrotalcites results decomposition yields a Co oxide phase supported by a highly defective inverted spinel-like structure. Cations Co2+ enter the support structure, and occupy both tetrahedral and octahedral positions. Octahedron coordinated Co species are reduced at 580–620°C. After the reduction at 470–480°C catalyst phase composition shows Co0 supported on inverted spinel-like structure, which contains Co2+ in the octahedral coordination. Further reduction at 600°C transforms the support to ‘ideal’ spinel, which contains no octahedron coordinated Co2+. Chemical properties of the Co–Al catalysts, including their performance in the Fischer–Tropsch synthesis (FTS), were found to depend on the catalyst reduction temperature, and thus on the support structure. Metal-support interaction is supposed to explain the observed properties of metallic cobalt.
Библиографическая ссылка: Khassin A.A. , Yurieva T.M. , Kustova G.N. , Itenberg I.S. , Demeshkina M.P. , Krieger T.A. , Plyasova L.M. , Chermashenczeva G.K. , Parmon V.N.
Cobalt–Aluminum co-Precipitated Catalysts and Their Performance in the Fischer–Tropsch Synthesis
Journal of Molecular Catalysis A: Chemical. 2001. V.168. N1-2. P.193-207. DOI: 10.1016/S1381-1169(00)00529-X WOS Scopus РИНЦ
Даты:
Поступила в редакцию: 21 июн. 2000 г.
Принята к публикации: 6 нояб. 2000 г.
Опубликована в печати: 1 мар. 2001 г.
Опубликована online: 1 мар. 2001 г.
Идентификаторы:
Web of science WOS:000167526500024
Scopus 2-s2.0-0035263483
РИНЦ 13375721
Chemical Abstracts 2001:167387
Chemical Abstracts (print) 134:268533
Альметрики: