Functionalization of activated carbons by HNO₃ treatment: Influence of phosphorus surface groups

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• 作者：Juan J. Ternero-Hidalgo ; Juana M. Rosas ; José ; Palomo ; Marí ; a J. Valero-Romero ; José ; Rodrí ; guez-Mirasol ; Tomá ; s Cordero ; ^{cordero@uma.es" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Carbon
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：101
• 期：Complete
• 页码：409-419
• 全文大小：3045 K

文摘

Influence of phosphorus on functionalization of activated carbons with nitric acid has been reviewed in this study. Results indicate that during treatment with nitric acid, phosphorus-containing carbons seem to graft more surface nitrogen, particularly as nitro groups, than those without phosphorus, where the nitrogen is found in lower oxidation state. A reaction pathway has been proposed to clarify the oxidation/nitration mechanism of phosphorus-containing carbons. The model consists of three independent mechanisms occurring simultaneously, with each one involving different phosphorus species present in the activated carbons.