Thermal Characterization Study of Eucalyptus Sourced from South China with Thermo-Kinetic Analysis Method

2013 ◽  
Vol 860-863 ◽  
pp. 479-484
Author(s):  
Ye Tang ◽  
Dian Zheng Fu ◽  
Zheng Hui Fu ◽  
Hong Liang Zhang ◽  
Wei Li
Keyword(s):  
Thermogravimetric Analysis ◽  
Kinetic Analysis ◽  
South China ◽  
Kinetic Method ◽  
Thermal Characterization ◽  
Volatile Matter ◽  
Analysis Method ◽  
Heating Rates ◽  
Characterization Study ◽  
Constant Heating

In this study, thermogravimetric analysis and kinetic analysis techniques were used to investigating the pyrolysis characteristic of the eucalyptus feedstock sourced from South China. The thermogravimetric analysis results indicate that the pyrolysis of eucalyptus sample occurred in three main stages which are the moisture vaporization stage, the volatile matter release stage and the char decomposition stage. The kinetic analysis results show that C-R kinetic method fits to the pyrolysis characterizations of eucalyptus. In addition, the effects of different constant heating rates on the pyrolysis behavior and kinetic parameters have been also studied in this paper.

Study on Volatile Evolution during the Eucalyptus Pyrolysis by Using TG-FTIR Analysis

2014 ◽  
Vol 884-885 ◽  
pp. 148-153
Author(s):  
Dian Zheng Fu ◽  
Ye Tang ◽  
Zheng Hui Fu ◽  
Hong Liang Zhang ◽  
Wei Li
Keyword(s):  
Fourier Transform ◽  
Thermogravimetric Analysis ◽  
South China ◽  
Volatile Matter ◽  
Infrared Analysis ◽  
Ftir Analysis ◽  
Pyrolysis Process ◽  
Heating Rates ◽  
Pyrolysis Products ◽  
Decomposition Stage

In this study, thermogravimetric analysis coupled with Fourier transform infrared analysis (TG-FTIR) was used to studying the volatile evolution characteristic during the eucalyptus pyrolysis from South China. The thermogravimetric analysis results indicate that the pyrolysis of eucalyptus occurred in three main stages which are the moisture vaporization stage, the volatile matter release stage and the char decomposition stage. The major gases evolved during the pyrolysis process were identified to be H2O, CO, CO2, CH4. In addition, the effects of different heating rates on the emissions of these pyrolysis products have been studied.

Theoretical Thermogravimetric Analysis at Constant Heating Rates

1980 ◽  
pp. 51-56 ◽  
Author(s):  
C. Comel ◽  
J. Veron ◽  
C. Bouster ◽  
P. Vermande
Keyword(s):  
Thermogravimetric Analysis ◽  
Heating Rates ◽  
Constant Heating

INVESTIGATION OF THERMAL DEGRADATION OF POULTRY PROCESSING DEWATERED SLUDGE USING THERMOGRAVIMETRIC ANALYSIS METHOD

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
N. Aniza ◽  
S. Hassan ◽  
M. F. M. Nor ◽  
K. E. Kee ◽  
Aklilu T.
Keyword(s):  
Particle Size ◽  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Heating Rate ◽  
Degradation Process ◽  
Heating Rates ◽  
Initial Stage ◽  
Poultry Processing ◽  
Effect Of Particle Size ◽  
Dewatered Sludge

Thermal degradation of Poultry Processing Dewatered Sludge (PPDS) was studied using thermogravimetric analysis (TGA) method. The effect of particle size on PPDS samples and operational condition such as heating rates were investigated. The non-isothermal TGA was run under a constant flow of oxygen at a rate of 30 mL/min with temperature ranging from 30ºC to 800ºC. Four sample particle sizes ranging between 0.425 mm to 2 mm, and heating rate between 5 K/min to 20 K/min were used in this study. The TGA results showed that particle size does not have any significant effect on the thermogravimetry (TG) curves at the initial stage, but the TG curves started to separate explicitly at the second stage. Particle size may affect the reactivity of sample and combustion performance due to the heat transfer and temperature gradient. The TG and peak of derivative thermogravimetry (DTG) curves tend to alter at high temperature when heating rate is increased most likely due to the limitation of mass transfer and the delay of degradation process. 

scholarly journals Determination of the unmetabolised 18F-FDG fraction by using an extension of simplified kinetic analysis method: clinical evaluation in paragangliomas

2015 ◽  
Vol 54 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Dominique Barbolosi ◽  
Sebastien Hapdey ◽  
Stephanie Battini ◽  
Christian Faivre ◽  
Julien Mancini ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Clinical Evaluation ◽  
Analysis Method ◽  
18F Fdg

Characterization and thermal degradation kinetics of thermoplastic polyimide based on BAPP

2017 ◽  
Vol 30 (7) ◽  
pp. 787-793 ◽  
Author(s):  
Xu Su ◽  
Yong Xu ◽  
Linshuang Li ◽  
Chaoran Song
Keyword(s):  
Thermogravimetric Analysis ◽  
Thermal Degradation ◽  
Degradation Kinetics ◽  
Degradation Process ◽  
Thermal Degradation Kinetics ◽  
Heating Rates ◽  
Step Method ◽  
Nitrogen Derivative ◽  
Degradation Reaction ◽  
Kinetics Of

Two kinds of thermoplastic polyimides (PIs) were synthesized via a two-step method with 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPP), 4,4′-oxydianiline (ODA) diamine, and 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA), and their thermal degradation kinetics was studied by thermogravimetric analysis at different heating rates under nitrogen. Derivative thermogravimetric analysis curves indicated a simple, single-stage degradation process in PI BTDA-BAPP and a two-stage degradation process in PI BTDA-ODA-BAPP. The activation energies ( Eas) of the thermal degradation reaction were determined by the Flynn–Wall–Ozawa and Kissinger–Akahira–Sunose methods without a knowledge of the kinetic reaction mechanism. By comparing the values of Ea and weight loss temperatures, it was demonstrated that the thermal stability of PI BTDA-ODA-BAPP was superior to that of PI BTDA-BAPP.

scholarly journals Kinetic study of Mongolian coals by thermal analysis

2018 ◽  
Vol 18 (44) ◽  
pp. 20-23
Author(s):  
Jargalmaa S ◽  
Tsatsral G ◽  
Battsetseg M ◽  
Batkhishig D ◽  
Ankhtuya A ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Thermal Characterization ◽  
Low Rank ◽  
Weight Changes ◽  
Heating Rates ◽  
Weight Losses ◽  
Brown Coals ◽  
Temperature Ranges ◽  
Kinetics Of

Thermal analysis was used for the thermal characterization of the coal samples. The experiments were performed to study the pyrolysis and gasification kinetics of typical Mongolian brown coals. Low rank coals from Shivee ovoo, Ulaan ovoo, Aduun chuluun and Baganuur deposits have been investigated. Coal samples were heated in the thermogravimetric apparatus under argon at a temperature ranges of 25-1020ºC with heating rates of 10, 20, 30 and 40ºC/min. Thermogravimetry (TG) and derivative thermogravimetry (DTG) were performed to measure weight changes and rates of weight losses used for calculating the kinetic parameters. The activation energy (Ea) was calculated from the experimental results by using an Arrhenius type kinetic model.

A modified kinetic analysis method of cellulose pyrolysis based on TG–FTIR technique

2018 ◽  
Vol 665 ◽  
pp. 20-27 ◽  
Author(s):  
Xiaoxiao Yang ◽  
Yuying Zhao ◽  
Rui Li ◽  
Yulong Wu ◽  
Mingde Yang
Keyword(s):  
Kinetic Analysis ◽  
Analysis Method ◽  
Cellulose Pyrolysis ◽  
Ftir Technique
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