scholarly journals Reaction Kinetic Parameters and Surface Thermodynamic Properties of Cu2O Nanocubes

Entropy ◽  
2015 ◽  
Vol 17 (12) ◽  
pp. 5437-5449 ◽  
Author(s):  
Xingxing Li ◽  
Huanfeng Tang ◽  
Xianrui Lu ◽  
Shi Lin ◽  
Lili Shi ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Kinetic Parameters ◽  
Reaction Kinetic

Thermodynamic Properties and Kinetic Parameters for Cyclic Ether Formation from Hydroperoxyalkyl Radicals

2003 ◽  
Vol 107 (24) ◽  
pp. 4908-4920 ◽  
Author(s):  
Catherina D. Wijaya ◽  
Raman Sumathi ◽  
William H. Green
Keyword(s):  
Thermodynamic Properties ◽  
Kinetic Parameters ◽  
Cyclic Ether

scholarly journals Reaction kinetic parameters for a distributed model of transport and reaction in Pd/Rh/CeZrO three-way catalytic converters

DYNA ◽  
2019 ◽  
Vol 86 (210) ◽  
pp. 216-223
Author(s):  
David Camilo Rosero Chicaíza ◽  
Bibian A Hoyos
Keyword(s):  
Kinetic Parameters ◽  
Reaction Kinetic ◽  
Distributed Model ◽  
Excess Oxygen ◽  
Catalytic Converters ◽  
First Order ◽  
Combustion Gases ◽  
Concentration Changes ◽  
Diffusive Effects ◽  
Volume Method

This paper presents a two-dimensional distributed model for the transport and reaction of combustion gases in channels of three-way catalytic converters, considering a detailed reaction kinetics with 16 chemical reactions in palladium and rhodium catalysts, and taking into account diffusive effects within the coating, to obtain a new set of reaction kinetic parameters that do not depend on the thickness of the coating. The model was solved using a finite volume method with a first order upwind scheme and simulations were conducted using computational fluid dynamics. The model with the new distributed reaction kinetic parameters, produced an excellent agreement with the experimental data of concentration at the end of the channels. Also, the model reproduced the most important concentration changes for the gas components in the specified temperature range and allowed simulations with excess oxygen and different thicknesses.

Reaction-kinetic parameters of glycidamide as determinants of mutagenic potency

2005 ◽  
Vol 580 (1-2) ◽  
pp. 91-101 ◽  
Author(s):  
V. Silvari ◽  
J. Haglund ◽  
D. Jenssen ◽  
B.T. Golding ◽  
L. Ehrenberg ◽  
...  
Keyword(s):  
Kinetic Parameters ◽  
Reaction Kinetic

Simulation of Supercritical Water Oxidation with Air at Pilot Plant Scale

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Belén García Jarana ◽  
Jezabel Sánchez Oneto ◽  
Juan Ramón Portela Miguélez ◽  
Enrique Nebot Sanz ◽  
Enrique J. Martínez de la Ossa
Keyword(s):  
Kinetic Parameters ◽  
Supercritical Water ◽  
Water Oxidation ◽  
Pilot Plant ◽  
Reaction Kinetic ◽  
Pure Water ◽  
Kinetic Equations ◽  
Pilot Scale ◽  
Laboratory Scale ◽  
Supercritical Water Oxidation

Supercritical Water Oxidation (SCWO) processes have been studied by numerous researchers. The effectiveness of this approach to treat a wide variety of wastes has been proved and the kinetics involved in some cases have been described. Phenol is commonly present in industrial wastewaters and it is extremely toxic. Hence, phenol is a model pollutant that has been the subject of numerous studies by SCWO on a laboratory scale. In this work, a pilot-scale SCWO system has been used to compare experimental and predicted conversions in the SCWO of phenol, using the reaction kinetic equations obtained at the laboratory scale. In this context, “PROSIM PLUS” software was employed to develop a simulator for the pilot plant facility, with the reaction kinetic parameters adjusted to represent the experimental data. In this study it was necessary to determine the thermal losses between the experimental reactor and its surroundings. These thermal losses were obtained from tests with pure water and oxidant streams in the absence of chemical reaction. An equation that predicted the effect of flow rate and temperature on the thermal losses was used. Experimental oxidation tests were conducted with initial temperature in the range 380 to 425 ºC, at 250 bar and phenol concentrations ranging from 1 to 12 g/l. Good agreement in the simulation was obtained by adjusting the kinetic parameters within their confidence range. This simulator was used to optimize the SCWO of phenol solutions in the pilot plant facility.

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