کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
187755 459647 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spontaneous arylation of activated carbon from aminobenzene organic acids as source of diazonium ions in mild conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Spontaneous arylation of activated carbon from aminobenzene organic acids as source of diazonium ions in mild conditions
چکیده انگلیسی

Activated carbon products modified with benzoic, benzenesulfonic and benzylphosphonic acid groups were prepared by spontaneous reduction of aryldiazonium ions in situ generated in water from the corresponding aminobenzene organic acids without addition of an external acid. Electrochemistry and NMR studies show that the advancement of the diazotization reaction depends both on the acidity and the electronic effect of the organic acid substituent, giving a mixture of diazonium, amine and triazene functionalities. Carbon products prepared by reaction of activated carbon Norit with 4-aminobenzenecarboxylic acid, 4-aminobenzenesulfonic acid and (4-aminobenzyl)phosphonic acid were analyzed by chemical elemental analysis and X-ray photoelectron spectroscopy experiments. Results show that this strategy is well suited for the chemical functionalization, giving a maximized grafting yield due to a chemical cooperation of amine and diazonium functionalities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 88, 15 January 2013, Pages 680–687
نویسندگان
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