کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59879 1419431 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxidation of styrene to benzaldehyde by p-toluenesulfonic acid using hydrogen peroxide in the presence of activated carbon
ترجمه فارسی عنوان
اکسیداسیون استایرن به بنزالدهید با استفاده از اسید پتانول سولفونیک با استفاده از پراکسید هیدروژن در حضور کربن فعال
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

The selective oxidation of styrene to benzaldehyde catalyzed by p-toluenesulfonic acid (p-TsOH) in the presence of activated carbon (AC) was investigated with H2O2 as the oxidant. The reaction parameters of reaction time, temperature, catalyst mass, and styrene/H2O2 molar ratios were evaluated. A strong promoting effect of AC on the p-TsOH/H2O2 system was observed. The appropriate ratio and amounts of AC and p-TsOH were an important factor. The acidity of p-TsOH does not play a significant role. p-TsOH reacted with H2O2 by a non-radical process to oxidize styrene. The function of the AC was to activate H2O2 and to help the p-TsOH/H2O2 system in styrene oxidation. The reduction of oxygen containing groups (–OH, –COOH) on AC by a high temperature treatment or introduction of –SO3H groups onto AC affected the styrene conversion. The –SO3H groups were more effective than the oxygen-containing groups on the AC in promoting styrene oxidation.

In the p-toluenesulfonic acid/activated carbon/H2O2 system, there is an interaction of a radical reaction (HAC/H2O2) and non-radical process (p-TsOH/H2O2) for the oxidation of styrene to benzaldehyde.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 36, Issue 5, May 2015, Pages 721–727
نویسندگان
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