Kinetics study of thermal decomposition of calcium carboxylate salts Academic Article

abstract

• 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 (calcium acetate, and two types of mixed calcium 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 calcium acetate was 556.75kJmol-1, and the activation energies for the two mixed calcium carboxylate salts were 232.87, and 176.55kJmol-1. In addition, three functions of conversion were employed to see which one best modeled the experimental data. The Sestak-Berggren model provides the best universal fit for all three salt types. 2013 Elsevier Ltd.

authors

• Holtzapple, Mark

published proceedings

• BIOMASS & BIOENERGY

author list (cited authors)

• Landoll, M. P., & Holtzapple, M. T.

citation count

• 2

complete list of authors

• Landoll, Michael P||Holtzapple, Mark T

publication date

• October 2013

publisher

• Elsevier  Publisher

published in

• Biomass and Bioenergy  Journal

keywords

• Carboxylate Salt
• Isoconversional Method
• Ketone
• Kinetic Parameters
• Mixalco (tm) Process
• Thermal Decomposition

Digital Object Identifier (DOI)

• 10.1016/j.biombioe.2013.07.005

start page

• 205

end page

• 214

volume

• 57

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.biombioe.2013.07.005

user-defined tag

• 7 Affordable and Clean Energy