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- W2037408073 abstract "Two methods are presented for obtaining rate constant of two-step reactions A 1 ⇌ A 2 ⇌ A 3 by means of chemical relaxation technique when two relaxation times are of the same order of magnitude. Both methods employ nonlinear estimation. The first method involves obtaining the relaxation times directly from the transient response data whereas the second method involves obtaining zeroes and poles of the transfer function which, in turn, is obtained from numerical Fourier transformation of pulse response data. The two methods are compared by using the results obtained from computer-generated ‘experimental’ data. On présente deux méthodes permettant d'obtenir un taux de réaction constant à deux degrés A 1 ⇌ A 2 ⇌ A 3 au moyen de la technique de relaxation chimique, lorsque deux moments de relaxation sont du même ordre de grandeur. La première méthode implique l'obtention des moments de relaxation, directement en fonction des data des réponses transitoires, tandis que la seconde méthode consiste à obtenir des zéros et des pôles de la fonction de transfert qui, à son tour, est obtenue à partir de la transformation numérique de Fourier des données relatives aux réponses des pulsations. On compare les deux méthodes en utilisant les résultats obtenus à partir des data “expérimentaux” fournis par un ordinateur. Es werden zwei Methoden zur Auffindung der Geschwindigkeitskonstante zweistufiger Reaktionen A 1 ⇌ A 2 ⇌ A 3 mit Hilfe der chemischen Entspannung vorgeschlagen wenn zwei Entspannungszeiten von der gleichen Grössenordnung sind. In beiden Methoden wird nichtlineare Schätzung angewendet. In der ersten Methode handelt es sich darum die Entspannungszeiten unmittelbar aus den vorübergehenden Reaktionsdaten zu erhalten, während es in der zweiten Methode gilt die Nullwerte und Pole der übergangsfunktion zu bestimmen, die weiderum aus der normalen Fourier-Transformation von Impulsreaktionsdaten erhalten wird. Die beiden Methoden werden, unter Verwendung von Ergebnissen aus mittels des Rechengerätes gelieferten, “experimentellen” Daten, mit einander verglichen." @default.
- W2037408073 created "2016-06-24" @default.
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- W2037408073 date "1969-10-01" @default.
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- W2037408073 title "Determination of rate constants by chemical relaxation method" @default.
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- W2037408073 doi "https://doi.org/10.1016/0009-2509(69)80102-8" @default.
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