کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
222153 464270 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption models and heat of adsorption of adsorbed ortho di-methyl benzene and 1-propanol species in competitive adsorption on silica by using temperature programmed adsorption equilibrium methods
ترجمه فارسی عنوان
مدل جذب و گرما جذب اورتو دی متیل بنزن و 1-پروپانول در جذب رقابتی روی سیلیس با استفاده از روش های تعادلی جذب نرمال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Adsorption of 1-propanol and ortho-xylene with and without competition on silica.
• Modeling the variation of silica surface coverage with the adsorption temperature.
• Comparison of experimental curves with Temkin and Langmuir models.
• Determination of the heats of adsorption of 1-propanol and ortho-xylene on silica.
• Highlighting the presence of interactions between adspecies on silica.

Single and binary adsorptions of ortho di-methyl benzene and 1-propanol on silica at 300 K and at various adsorption pressures were studied using temperature programmed adsorption equilibrium (TPAE) procedure. The evolutions of the surface coverage with the adsorption temperature (θe = f(Ta)) were compared to the Temkin and Langmuir models in order to determine the heats of adsorption and to reveal the presence of mutual interactions between adspecies. It has been shown that in single adsorption equilibrium of 1-propanol on silica, the heats of adsorption were found to be dependent to the surface coverage. In contrast, of single adsorption equilibrium of ortho di-methyl benzene on silica, the heat of adsorption was found independent to the surface coverage. However, in the competitive adsorption, the heats of adsorption of the adsorbates were found varied with the surface coverage. The variation of heats in single and in binary adsorption characterizes the mutual interactions between the adspecies.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 2, Issue 1, March 2014, Pages 377–385
نویسندگان
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