Chemical reaction studies by frequency response methods Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/0c483n19f

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  • A method for measuring chemical reaction rates in order to distinguish between different reaction mechanisms is presented. This method was used to study zero -, first- and second -order reactions by analyzing the output response to a sinusoidal input of reactant concentrations in an isothermal continuous stirred tank reactor. The results showed that only zero- and first -order reactions produce a pure sinusoidal output, and that the harmonics of a modified Fourier series are less than ten percent of the fundamental for a second -order reaction. A complex rate expression was also investigated, but the trial and error technique performed on an IBM 7090 digital computer did not converge. If more theoretical responses are computed for other, and more complex, rate equations, this approach can be used to distinguish between different reaction rate equations and consequently can aid in determining the true reaction mechanism.
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