Differential thermal analysis and reaction kinetics for nth-order reaction

Yang, Ralph T.; Steinberg, M.

doi:10.1021/ac50015a033

Cited by 22 publications

(4 citation statements)

References 21 publications

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“…The orders of kinetics of these peaks as determined from their skewness (equations 21-23) have also been displayed in Table 1. It is observed that the mean value of the orders of kinetics of these peaks is in fair agreement with corresponding values reported in the literature 9,10 .…”

Section: Calculation Of Order Of Kinetics By Using Skeewness From Reported Dta Curvessupporting

confidence: 91%

“…At peak temperature, T=T m the deviation ΔT of the DTA curve from the base line is extremum and (9) From equations ( 6)-( 8), it is possible to write The r th order moment 4,5 about an arbitrary origin is defined as (1) where, x i and are respectively i th observed value and mean value of the distribution and N is the number of data points. Skewness, actually, indicates the lack of symmetry.…”

Section: Theoretical Analysis Of Dta Curves Recorded Under a Linear Heating Schemementioning

confidence: 99%

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Determination of the Order of Kinetics of a DTA Curve by Using the Concept of Skewness

Sarkar¹,

Bhattacharyya²,

Sarkar³

et al. 2020

Orient. J. Chem

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In the present paper, a novel way of finding out the order of kinetics of differential thermal analysis (DTA) curves by using the concept of skewness (Sk) has been investigated. It is found that for a particular DTA peak, skewness is a function of both the order of kinetics and the quantity, First order DTA peaks are characterized by negative skewness whereas those for the second order are characterized by positive skewness. Therefore, skewness can be used as an indicator of the order of kinetics of a DTA peak. We have evaluated and compared the orders of kinetics of some reported DTA peaks using the concept of skewness and found that the resulting values of the orders of kinetics are in fair agreement with those reported in literature.

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Section: Calculation Of Order Of Kinetics By Using Skeewness From Reported Dta Curvessupporting

confidence: 91%

Section: Theoretical Analysis Of Dta Curves Recorded Under a Linear Heating Schemementioning

confidence: 99%

Determination of the Order of Kinetics of a DTA Curve by Using the Concept of Skewness

Sarkar¹,

Bhattacharyya²,

Sarkar³

et al. 2020

Orient. J. Chem

View full text Add to dashboard Cite

show abstract

“…-equations : Eq. (1 6) is same as Liu et al ( 5 ) derived. From this equation, we see that the values of n must be less than unity.…”

Section: Derivation Of Kinetic Parameter Equationsmentioning

confidence: 89%

The Kinetic Parameters and Parameter Effect Factors Calculation of multicomponent energetic materials decomposition reaction from a single differential thermal analysis curve

Luo¹

1996

Propellants Explo Pyrotec

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The kinetic parameter of energetic materials with four components, i.e. lead thiocyanate, antimony sulfide, potassium chlorate, and trinitrotoluene, (PSKT), was analyzed with differential thermal analysis (DTA) technique. Kinetic parameter equations were derived for estimating a general nth‐order decomposition reaction from a single DTA curve. Three categories, for n < 1, n = 1, and n ≠ 1 were derived. Three kinetic parameters, namely, activation energy E, reaction order n, and pre‐exponential factor A can be calculated directly without any iteration from the characteristic temperatures To, Til, Tm, and Te that are the decomposition starting point, first inflection point, peak maximum point and end point on the DTA curve, respectively. The stability and compatibility of PSKT energetic material can be judged from experimental characteristic temperatures and calculated kinetic parameters. The effect factors of characteristic temperature and kinetic parameters were evaluated by means of Yates' algorithm.

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“…Yang and Steinberg [15] proposed a model for determining the kinetic parameters from a single DTA curve for a general nth-order reaction. Liu et al [6] modified the Yang and Steinberg model and obtained a fairly convenient one.…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis of DSC and thermogravimetric data on combustion of lignite

Kök

Okandan

1996

Journal of Thermal Analysis

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Thermal analysis increasingly being used to obtain kinetic data relating to sample decomposition. This work involves a comparative study of several methods used to analyse DSC and TG/DTG data obtained on the oxidation of Beypazari lignite. A general computer program was developed and the methods are compared with regard to their accuracy and the ease of interpretation of the kinetics of thermal decomposition. For this study, the ratio method was regarded as the preferred method, because it permits the estimation of reaction order, activation energy and Arrhenius constant simultaneously from a single experiment.

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Differential thermal analysis and reaction kinetics for nth-order reaction

Cited by 22 publications

References 21 publications

Determination of the Order of Kinetics of a DTA Curve by Using the Concept of Skewness

Determination of the Order of Kinetics of a DTA Curve by Using the Concept of Skewness

The Kinetic Parameters and Parameter Effect Factors Calculation of multicomponent energetic materials decomposition reaction from a single differential thermal analysis curve

Kinetic analysis of DSC and thermogravimetric data on combustion of lignite

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