The nature of the deposited carbon at methane cracking over a nickel loaded wood-char

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• 作者：Chamseddine Guizani ; ^{guizani.c@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Francisco Javier Escudero Sanz ; Sylvain Salvador
• 关键词：Biomass char ; Nickel impregnation ; Methane cracking ; Char reactivity ; Char characterization
• 刊名：Comptes Rendus Chimie
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：19
• 期：4
• 页码：423-432
• 全文大小：1314 K

文摘

The catalytic properties of raw biomass chars and Ni-loaded biomass chars prepared at a high-heating-rate were assessed in the methane decomposition reaction. The raw chars exhibited a moderated catalytic activity in methane cracking while the Ni-loaded chars showed a catalytic activity 10 times higher than the raw chars. The deposited carbon was a highly ordered one as evidenced by XRD, Raman analysis and oxygen reactivity tests. The activation energy in the combustion reaction was estimated to be 300 kJ/mol. These results indicate that biomass char can be an effective low-cost and active support for metal impregnation to be used in catalytic cracking of hydrocarbons for hydrogen production.