کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
677355 1459848 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics study of thermal decomposition of sodium carboxylate salts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Kinetics study of thermal decomposition of sodium carboxylate salts
چکیده انگلیسی

The MixAlco™ process ferments lignocellulosic biomass to carboxylate salts that are thermally decomposed into ketones, which are then chemically converted to a wide variety of chemicals and fuels. To perform these decompositions, suitable reaction models are necessary to properly design, scale, and optimize commercial reactors. For three salt types (sodium acetate, and two types of mixed sodium carboxylate salts), activation energy was determined using three isoconversional methods that employed TGA curves at different heating rates. For all three salt types, activation energy varied significantly with conversion. The average activation energy for sodium acetate was 226.65 kJ/mol, and the activation energies for the two mixed sodium carboxylate salts were 195.61, and 218.18 kJ/mol. In addition, three functions of conversion were employed to see which one best modeled the experimental data. The Sestak-Berggren model fits all three salt types best.


► Sodium carboxylate salts from fermentation broth thermally decompose to ketones.
► Activation energy varies with conversion for all three salt types.
► Sestak-Berggren model provides best fit for all three salt types.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biomass and Bioenergy - Volume 45, October 2012, Pages 195–202
نویسندگان
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