کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625962 | 1455439 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reaction of phenolic acids with Fenton-generated hydroxyl radicals: Hammett correlation
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Hydroxyl radicals generated by Fenton's reagent rapidly oxidize phenolic acids in aqueous solution. Analysis of second-order rate constants for correlations reveals quantitative structure-activity relationships (QSAR). The results were analysed so as to obtain the relation between the chemical structure of the substituted benzene ring and its reactivity with the hydroxyl radical. The rate constants for oxidation of selected phenolic acids, ranged from 1.24 Ã 109 Mâ 1 sâ 1 for 3,4,5-trimethoxybenzoic acid to 2.57 Ã 109 Mâ 1 sâ 1 for 3-(4-hydroxyphenyl)-propionic acid, respectively, to provide good Hammett correlations. The results of the Hammett correlation are consistent with the expected reaction mechanism where the rate-limiting step is the initial hydroxylation of the phenolic compound and the formation of a hydroxycyclohexadienyl radical.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 252, Issues 1â3, March 2010, Pages 167-171
Journal: Desalination - Volume 252, Issues 1â3, March 2010, Pages 167-171
نویسندگان
José A. Peres, JoaquÃn R. DomÃnguez, Jesus Beltran-Heredia,