Formation of a Supported Cobalt Catalyst for the Synthesis of Carbon Nanofibers on Aluminum Oxide Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2010, Volume: 51, Number: 3, Pages: 449-455 Pages count : 7 DOI: 10.1134/S0023158410030195 | ||||
| Tags | Cobalt; Pyrolysis; Butane; Carbon Deposit; Catalysts | ||||
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Abstract:
Comparative studies of the effect of the physicochemical characteristics of a support (aluminum oxide) on the formation of a supported Co catalyst and its activity in the pyrolysis of alkanes (propane-butane) were performed. The effect of the crystalline modification of alumina on the yield of catalytic filamentous carbon (CFC) ((g CFC)/(g Co)) was studied. The surface morphologies of Co-containing catalysts and synthesized carbon deposits were studied by scanning electron microscopy. It was found that carbon deposits with a well-defined nanofiber structure were synthesized by the pyrolysis of a propane-butane mixture in the presence of hydrogen at 600°C on supported Co catalysts prepared by homogeneous precipitation on macroporous corundum (α-Al2O3). The yield of CFC was no higher than 4 (g CFC)/(g Co). On the Co catalyst prepared by homogeneous precipitation on mesoporous Al2O3, the intense carbonization of the initial support; the formation of cobalt aluminates; and, as a consequence, the deactivation of Co0 as a catalyst of FC synthesis occurred. The dependence of the yield of CFC on the preheating temperature (from 200 to 800°C) of Co catalysts before pyrolysis was studied. It was found that, as the preheating temperature of supported Co/Al2O3 catalysts was increased, the amount of synthesized carbon, including CFC, decreased because of Co0 deactivation due to the interaction with the support and coke formation.
Cite:
Kovalenko G.A.
, Rudina N.A.
, Perminova L.V.
, Skrypnik O.V.
Formation of a Supported Cobalt Catalyst for the Synthesis of Carbon Nanofibers on Aluminum Oxide
Kinetics and Catalysis. 2010. V.51. N3. P.449-455. DOI: 10.1134/S0023158410030195 WOS Scopus РИНЦ ANCAN OpenAlex
Formation of a Supported Cobalt Catalyst for the Synthesis of Carbon Nanofibers on Aluminum Oxide
Kinetics and Catalysis. 2010. V.51. N3. P.449-455. DOI: 10.1134/S0023158410030195 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Коваленко Г.А.
, Рудина Н.А.
, Перминова Л.В.
, Скрыпник О.В.
Формирование нанесенного Co-катализатора для синтеза углеродных нановолокон на оксиде алюминия
Кинетика и катализ. 2010. Т.51. №3. С.468-475. РИНЦ
Формирование нанесенного Co-катализатора для синтеза углеродных нановолокон на оксиде алюминия
Кинетика и катализ. 2010. Т.51. №3. С.468-475. РИНЦ
Dates:
| Submitted: | Feb 18, 2009 |
| Published print: | Jun 1, 2010 |
| Published online: | Jun 24, 2010 |
Identifiers:
| Web of science: | WOS:000281104600019 |
| Scopus: | 2-s2.0-77955731551 |
| Elibrary: | 15329174 |
| Chemical Abstracts: | 2010:788073 |
| Chemical Abstracts (print): | 153:270579 |
| OpenAlex: | W2065344143 |
Citing:
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