Determination of reaction kinetics of barley straw using thermogravimetric analysis

1994 ◽  
Vol 45-46 (1) ◽  
pp. 35-50 ◽  
Author(s):  
A. E. Ghaly ◽  
A. Ergüdenler
Keyword(s):  
Thermogravimetric Analysis ◽  
Reaction Kinetics ◽  
Barley Straw ◽  
Kinetics Of

Determination of Reaction Kinetics of Straw and Stalk of Rapeseed Using Thermogravimetric Analysis

2001 ◽  
Vol 23 (8) ◽  
pp. 767-774
Author(s):  
Filiz Karaosmanog œlent D. C¸ift, Asli Isig œr-Ergüdenler
Keyword(s):  
Thermogravimetric Analysis ◽  
Reaction Kinetics ◽  
Kinetics Of

scholarly journals Application of a multiphase microreactor chemostat for the determination of reaction kinetics of Staphylococcus carnosus

2019 ◽  
Vol 42 (6) ◽  
pp. 953-961 ◽  
Author(s):  
S. Lladó Maldonado ◽  
J. Krull ◽  
D. Rasch ◽  
P. Panjan ◽  
A. M. Sesay ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Staphylococcus Carnosus ◽  
Kinetics Of

scholarly journals Determination of Carbonation/Calcination Reaction Kinetics of a Limestone Sorbent in low CO2 Partial Pressures Using TGA Experiments

2017 ◽  
Vol 114 ◽  
pp. 259-270 ◽  
Author(s):  
Mohammad Ramezani ◽  
Priscilla Tremain ◽  
Elham Doroodchi ◽  
Behdad Moghtaderi
Keyword(s):  
Reaction Kinetics ◽  
Low Co2 ◽  
Partial Pressures ◽  
Kinetics Of

Thermogravimetric analysis and reaction kinetics of lignocellulosic biomass pyrolysis

Energy ◽  
2020 ◽  
Vol 201 ◽  
pp. 117537 ◽  
Author(s):  
Ruirui Xiao ◽  
Wei Yang ◽  
Xingshun Cong ◽  
Kai Dong ◽  
Jie Xu ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Reaction Kinetics ◽  
Lignocellulosic Biomass ◽  
Biomass Pyrolysis ◽  
Kinetics Of

Hydrogen Passivation Kinetics of Si Nanocrystals in SiO2

2003 ◽  
Vol 770 ◽  
Author(s):  
Andrew R. Wilkinson ◽  
Robert G. Elliman
Keyword(s):  
Reaction Kinetics ◽  
Activation Energies ◽  
Hydrogen Passivation ◽  
Time Resolved ◽  
Luminescence Efficiency ◽  
Si Nanocrystals ◽  
Preliminary Study ◽  
Kinetics Of ◽  
Insight Into

AbstractHydrogen passivation of non-radiative defects increases the luminescence intensity from silicon nanocrystals. In this study, photoluminescence (PL) and time-resolved PL were used to investigate the chemical kinetics of the hydrogen passivation process. Isochronal and isothermal annealing sequences were used to determine the reaction kinetics for the absorption and desorption of hydrogen, using the generalised consistent simple thermal (GST) model proposed by Stesmans for Pb defects at planar Si/SiO2 interfaces. This included determination of the activation energies and rate constants for the forward and reverse reactions as well as the associated spread in activation energies. The reaction kinetics determined from such measurements were found to be in excellent agreement with those for the passivation of Pb defects at planar Si/SiO2 interfaces, suggesting the nanocrystal emission process is also limited by such defects. These results provide useful model data as well as insight into the processing conditions needed to achieve optimum passivation in H2. As an extension to the work, a preliminary study into passivation by atomic hydrogen was pursued via a post-metallization Al anneal (alneal). A considerable gain in luminescence efficiency was achieved over the previously optimised passivation in H2.

Determination of Heterogeneous Reaction Kinetics of High-Temperature Biomass Char

2017 ◽  
pp. 331-344
Author(s):  
C. Schneider ◽  
P. Stoesser ◽  
S. Rincon ◽  
T. Kolb
Keyword(s):  
High Temperature ◽  
Reaction Kinetics ◽  
Heterogeneous Reaction ◽  
Biomass Char ◽  
Kinetics Of

DEVELOPING OF MATLAB APPLICATION FOR DETERMINING THE REACTION KINETICS OF RUBBER VULCANIZATION PROCESS

2021 ◽  
Author(s):  
Dario Balaban ◽  
◽  
Jelena Lubura ◽  
Predrag Kojić ◽  
Jelena Pavličević ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Reaction Kinetics ◽  
Kinetic Parameters ◽  
Degradation Process ◽  
Complex Process ◽  
Quality Of Fit ◽  
Kinetics Of ◽  
Vulcanization Process

Rubber vulcanization is kinetically a complex process, since it consists of two simultaneous reactions: curing and degradation. To determine reaction kinetics, it is necessary to determine a kinetic model which describes the process adequately. Proposed kinetic model has six adjustable parameters. In order to determine kinetic parameters of the proposed kinetic model, commercially available rubber gum was used. Oscillating disc rheometer was used to investigate experimental dependence of torque on time, at six temperatures in the range from 130 to 180 °C, with a step of 10 °C. Matlab application, built via App Designer feature, was developed in order to fit the experimental data to the proposed kinetic model. Developed Matlab application, consisting of two tabs, enables user to upload raw rheometer data, perform manual fitting or automatic fitting (manual or automatic estimation of initial values of adjustable parameters), test the effect of constant values of some kinetic parameters on the overall quality of fit, visualize the dependence of kinetic parameters on temperature and to determine the values of Arrhenius expression for curing and degradation process. Both fitting methods were proven to be efficient; overall determination coefficient and MAPE value for automatic and manual fitting methods were >0.99 and <1%, and >0.999 and <1%, respectively. Arrhenius parameters were also determined with high accuracy (R2>0.98). Developed application enables simple and efficient determination of kinetic parameters by means of different fitting methods, simultaneous fitting of data on all temperatures, and testing the effect of constant kinetic parameters values on fitting results

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