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Kinetic Order Determination 1.0

  Date Added: June 30, 2013  |  Visits: 243

Kinetic Order Determination

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Determine the reaction order of a chemical reaction of the form: rate = Ao*[A]^a*[B]^b*exp(-Ea/R*T)kinetic order determination by wide area search and model-data error minimizationkinfit attempts to determine the optimal order of reaction (a and b) of the form rate = Ao * [A]^a * [B]^b * exp(-Ea/R*T) where Ao is the pre-exponential rate constantA and B are the component concentrations with a and b their powers to be determined Ea is the activation energy in same units as R the universal gas constantT is the temperature(C)kinfit will search over a range of a and b values to try and match experimental data of reaction rates (data) specified below with the model rate equation above. For each value of a and b, a value of Ao is determined by wide area iterative searching to minimize the error between the rate data and the model rate equation.Inputs are:Aorder and Border contain the ranges to search for a and b and number of values to useexample Aorder=[1,2,10] would look at 10 values from [A]^1 to [A]^2Changes in Ea have the most impact when the data is spread over a wide range of temperatures. For most accurate results it is best to take all the data within the same few degrees and keep the system at low conversion to reduce the influence of heat and mass transfer effectsExperimental data for use in this program must contain the following data in columns (see example below). this is easy to paste in from excel and should have the following columns (only 1-4 are required)1. Concentration of A Mole fraction is recommended variable Afrac2. Concentration of B Mole fraction is recommended variable Bfrac3. Temperature (C) variable TC4. Rate data in moles/s of reaction in the compound of interest variable ratedat5,6,.. Extra data such as conversions could be included for indexing or removing points based on defined criteria (such as conversion less then some value)All data is pasted in as a block and the sub variables defined after that. you may also include other columns of data to assist in sorting or other plottingV1.1, Steven Edmund, April 2012

Requirements: No special requirements
Platforms: Matlab
Keyword: Afrac Bfrac Columns Concentration Excel Paste Required Variable
Users rating: 0/10

License: Shareware Size: 10 KB
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