The features of the CO disproportionation reaction over iron-containing catalysts prepared by different methods

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• 作者：A. A. Vedyagin ; I. V. Mishakov…
• 关键词：Fe ; containing catalysts ; CO disproportionation reaction ; Carbon deposits ; Carbide cycle mechanism ; Carbon nanofibers
• 刊名：Reaction Kinetics, Mechanisms and Catalysis
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：117
• 期：1
• 页码：35-46
• 全文大小：1,327 KB
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• 作者单位：A. A. Vedyagin (1)
  I. V. Mishakov (1) (2)
  P. G. Tsyrulnikov (3)
  
  1. Boreskov Institute of Catalysis SB RAS, pr. Ac. Lavrentieva, 5, Novosibirsk, Russia, 630090
  2. National Research Tomsk Polytechnic University, Lenin av., 30, Tomsk, Russia, 634050
  3. Institute of Hydrocarbons Processing SB RAS, Neftezavodskaya str., 54, Omsk, Russia, 644040
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Industrial Chemistry and Chemical Engineering
  Physical Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1878-5204

文摘

The peculiarities of the CO disproportionation reaction over iron-containing catalysts have been studied. The reaction is known to be reversible and resulting in a direct path to the formation of carbon deposits and CO₂. The iron-containing catalysts (1–5 wt% of Fe) were prepared by three different methods: co-precipitation of Fe- and Al-containing precursors, impregnation of γ-Al₂O₃ support with iron nitrate, and solution combustion synthesis (SCS). The latter technique is based on self-propagating combustion of active component precursor with fuel additive deposited on surface of fiberglass. The synthesized samples were characterized with physicochemical methods and tested in CO disproportionation reaction within the temperature range of 120–600 °C. The co-precipitated catalyst 5 wt% Fe–Al₂O₃ showed the highest activity (45 % conversion of CO) which is much superior to that observed for other catalysts in this reaction. According to SEM, CO disproportionation reaction has resulted in carbon deposition in both amorphous and nanostructured forms. It was shown that preparative technique has significant effect on catalytic performance of iron-containing catalysts. Keywords Fe-containing catalysts CO disproportionation reaction Carbon deposits Carbide cycle mechanism Carbon nanofibers