Thermal decomposition of N-(salicylidene)-L-leucine in static air atmosphere

Vennila, M.; Govindasamy, Mani; Thanikachalam, Venugopal; Jayabharathi, Jayaraman

doi:10.5155/eurjchem.2.2.229-234.317

Cited by 4 publications

(3 citation statements)

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“…The invariant kinetic parameters (IKP) method was applied to study thermal decomposition of few pharmacologically active compounds, e.g. N,N'-bis (3,5-di-t-butylsalicylidene)-1,3-ethylene-diamine metal complexes [9] and N-(salicylidene)-L-leucine [10].…”

Section: Introductionmentioning

confidence: 99%

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The kinetic analysis of non-isothermal carisoprodol reaction in nitrogen atmosphere using the invariant kinetic parameters method

Kamel

2014

Eur. J. Chem.

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KEYWORDSThe non-isothermal kinetic parameters corresponding to the thermal decomposition of carisoprodol under nitrogen atmosphere was investigated at four different heating rates 5, 10, 15 and 20 °C/min. The activation energy was determined using three linear isoconversional methods, Friedman, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose. Results showed good agreement with each other. Invariant kinetic parameters (IKP) method was applied in the conversion range of 0.2 ≤ α ≤ 0.8 for the determination of the kinetic triplet. Einv= 95.81 kJ/mol, Ainv = 2.275×10 7 1/min and the decomposition mechanism corresponds to nucleation and growth, following the Avrami-Erofeev model, A1.5, as the kinetic model. The Perez-Maqueda et al. criterion associated with the independence of activation parameters on the heating rate (by means of Coats-Redfern and Flynn-Wall equation) confirmed the model. CarisoprodolThermal analysis Perez-Maqueda criterion Invariant kinetic parameters Linear isoconversional methods Non-isothermal kinetic parameters

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Section: Introductionmentioning

confidence: 99%

“…DTA curves for the thermal decomposition of carisoprodol in nitrogen atmosphere at different heating rates(5,10,15, and 20 °C/min).…”

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confidence: 99%

The kinetic analysis of non-isothermal carisoprodol reaction in nitrogen atmosphere using the invariant kinetic parameters method

Kamel

2014

Eur. J. Chem.

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“…Adjustment methods can provide some information about the degree of kinetic control. Model-fitting methods such as Friedman Isoconversional [6], Flynn-Wall-Ozawa [7,8], Kissinger-Akahira-Sunose [9,10] and Kissinger [11] have been used extensively to estimate the kinetic parameters and reaction mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis, Kinetic and Kinetic Model Study of Epoxidized Natural Rubber

Alwaan

Hassan²

2014

Progress in Rubber, Plastics and Recycling Technology

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Pyrolysis, kinetics properties and a kinetic model of epoxidized natural rubber (ENR-50) were studied in this work by differential scanning calorimeter (DSC) and thermogravimetry analysis (TGA/DTGA) tests. DSC results indicated that the ENR-50 rubber remained still, without degradation, until 354.65°C and ENR-50 degrades at temperatures ranging between 354.65 to 420°C at a constant heat rate (10°C/min). The degradation enthalpy was (-1241.8 J/g) and the remaining ash was 1.48% at 500°C. Degradation kinetics were studied according to Kissinger, Flynn-Wall-Ozawa, Friedman and Kissinger-Akahira-Sunose methods at different heating rates in nitrogen, at a flow rate of 20 ml/ min. Activation energies and the pre-exponential factor were evaluated from the slope of Flynn-Wall-Ozawa, Friedman and Kissinger-Akahira-Sunose plots at conversions between 10 and 90%. The activation energy was also calculated by the Kissinger ' s method and it was equal to 41.735 kJ mol −1. Criado ' s method was employed to investigate the kinetic model, g(α) of ENR-50 and it was found that the diffusion model (D1) agreed with ENR-50 degradation data.

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