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Comparison of methods of determining Arrhenius equation parameters by the least squares method

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Abstract

The parameters of the Arrhenius equation determined by the linear, weighted linear and non-linear least squares methods and by the simplex method are compared. Since the non-linear least squares method permits the consideration of statistical weights of both the dependent (k) and independent (T) variables and does not involve logarithmic transformation, it is advisable to calculate the parameters of the Arrhenius equation by means of the non-linear least squares method.

Zusammenfassung

Arrhenius-Parameter bestimmt nach der linearen, mit Gewichten operierenden linearen und nicht-linearen Methode der kleinsten Fehlerquadrate oder nach der Simplex-Methode werden miteinander verglichen. Da bei der nicht-linearen Methode der kleinsten Fehlerquadrate sowohl die abhÄngige (K) als auch die unabhÄngige (T) Variable mit statistischen Gewichten versehen werden kann und keine logarithmische Transformation vorgenommen wird, ist es zweckmÄ\ig, die Berechnung der Parameter der Arrhenius-Gleichung nach der nicht-linearen Methode der kleinsten Fehlerquadrate auszuführen.

РЕжУМЕ

сОпОстАВлЕНы пАРАМЕ тРы УРАВНЕНИь АРРЕНИ УсА, ВыЧИслЕННыЕ МЕтОДОМ лИНЕИНых, ВЕсОВых лИНЕИНых И НЕ лИНЕИНых НАИМЕНьшИх кВАДРАтОВ ИлИ жЕ сИМплЕксНыМ МЕ тОДОМ. пОскОлькУ МЕтОД НЕлИ НЕИНых НАИМЕНьшИх кВ АДРАтОВ пОжВОльЕт РАссМАтРы ВАть стАтИстИЧЕскИИ ВклА Д ОБОИх пЕРЕМЕННых, кА к жАВИсИМОгО ФАктОРАk, тАк И НЕжАВИсИМОИT, И НЕ ВклУЧАЕт лОгАРИ ФМИЧЕскОгО пРЕОБРАж ОВАНИь, ОН ьВльЕтсь пРИЕМлЕМыМ Дль ВыЧИслЕНИь пАРАМЕтРОВ УРАВНЕНИ ь АРРЕНИУсА.

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Różycki, C. Comparison of methods of determining Arrhenius equation parameters by the least squares method. Journal of Thermal Analysis 29, 959–963 (1984). https://doi.org/10.1007/BF02188843

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  • DOI: https://doi.org/10.1007/BF02188843

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