کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4995898 1459433 2017 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of the chemical reaction kinetics using isothermal reaction calorimetry supported by measurements of the gas production rate: A case study on the decomposition of formic acid in the heterogeneous Fenton reaction
ترجمه فارسی عنوان
تعیین سینتیک واکنش شیمیایی با استفاده از کالریمتری واکنش ایزوترمی با اندازه گیری میزان تولید گاز پشتیبانی شده: مطالعه موردی بر روی تجزیه اسید فرمیک در واکنش ناهمگن فنتون
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
One of the most important steps in studying chemical reaction kinetics is to determine a rate law for the reaction. In this paper, a method for the identification of the reaction kinetic model using isothermal calorimetric data and additional measurement of the rate of pressure change in a constant volume of a calorimetric vessel is described. This method can be applied to fairly fast chemical reactions (i.e. those that can be completed within about 2 h) that produce gaseous products. The decomposition of formic acid in the heterogeneous Fenton process is employed as a case study to demonstrate the use of the developed method for the kinetic analysis of a complex reaction system. It was found that the rate of decomposition of hydrogen peroxide can be described by the Langmuir-Hinshelwood type of equation in the form r = kCP/(1 + KPCP) (where CP is a molar concentration of H2O2) both in the case of the decomposition of the aqueous hydrogen peroxide solution as well as during the oxidation of formic acid. A simple, purely empirical rate equation for the decomposition of formic acid was also proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 653, 10 July 2017, Pages 62-70
نویسندگان
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