An investigation of the pyrolysis kinetics of some aliphatic amino acids

Tang, Wanjun; Wang, Cunxin; Chen, Donghua

doi:10.1016/j.jaap.2005.04.003

Cited by 37 publications

(10 citation statements)

References 24 publications

(27 reference statements)

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“…The experimental rate constant could be influenced by a profound catalytic reactor-wall effects and/or the presence of unexpected parallel bimolecular reactions. For instance, formation of 2,5-diketopiperazine as a major intermediate in the pyrolysis of proline [10] supports the hypothesis of the possible involvement of parallel reactions. Along the same line of enquiry, we have shown recently that bimolecular self-reactions were necessary to explain the experimentally determined reaction rate constant for the decomposition of acetamide [17].…”

Section: Kinetic Considerationsupporting

confidence: 60%

“…Pyrolysis of proline was found to produce numerous poly aromatic hydrocarbons (PAHs) and nitrogenated-PAHs such as 2,5-diketopiperazine, benzonitrile and pyrole [8]. Thermal behaviour of the decomposition of proline was investigated with the aid of a thermogravity [10]. An overall rate of unimolecular decomposition was determined to be 1.54 Â 10 14 T 1.1 exp (À20200/T) s À1 .…”

Section: Introductionmentioning

confidence: 99%

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Theoretical study on the unimolecular decomposition of proline

Rawadieh

Altarawneh

Alateyat

et al. 2013

Computational and Theoretical Chemistry

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Section: Kinetic Considerationsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Theoretical study on the unimolecular decomposition of proline

Rawadieh

Altarawneh

Alateyat

et al. 2013

Computational and Theoretical Chemistry

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“…With reference to the literature, 14 the apparent activation energy is computed by the isoconversional method. The following formula is used.…”

Section: Theoretical Methodsmentioning

confidence: 99%

Effects of protein and phosphate buffer concentrations on thermal denaturation of lysozyme analyzed by isoconversional method

et al. 2016

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Thermal denaturation of lysozymes was studied as a function of protein concentration, phosphate buffer concentration, and scan rate using differential scanning calorimetry (DSC), which was then analyzed by the isoconversional method. The results showed that lysozyme thermal denaturation was only slightly affected by the protein concentration and scan rate. When the protein concentration and scan rate increased, the denaturation temperature (Tm) also increased accordingly. On the contrary, the Tm decreased with the increase of phosphate buffer concentration. The denaturation process of lysozymes was accelatated and the thermal stability was reduced with the increase of phosphate concentration. One part of degeneration process was not reversible where the aggregation occurred. The other part was reversible. The apparent activation energy (Ea) was computed by the isoconversional method. It decreased with the increase of the conversion ratio (α). The observed denaturation process could not be described by a simple reaction mechanism. It was not a process involving 2 standard reversible states, but a multi-step process. The new opportunities for investigating the kinetics process of protein denaturation can be supplied by this novel isoconversional method.

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“…1 There are numerous studies addressing the transformation kinetics of oil shale, sand bitumen, scrap automobile tyres, aliphatic amino acids, waste lube oils, municipal solid wastes, oil sludge, and different kinds of biomass. [2][3][4][5][6][7][8][9][10][11][12] In several publications, it was reported that biomass pyrolysis takes place in the range of 200-400 C and further increase of temperature above 400 C results in the formation of solid char residue. 1 The thermal degradation of rapeseed cake was studied in an inert (N 2 ) atmosphere from ambient temperature to 650 C at two different heating rates (10, 25 C min À1 ).…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis kinetics of de-oiled cakes by thermogravimetric analysis

Volli

Singh

2013

Journal of Renewable and Sustainable Energy

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De-oiled cakes could be a potential source of renewable energy that can supply liquid and gaseous fuels through thermo-chemical conversion processes. Thermal properties and reaction kinetics of de-oiled cakes play prominent role in design, operation, and modeling of these systems. In the present work, thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) techniques were used to study the thermo-chemical behavior of four varieties of de-oiled cakes (sesame, mustard, neem, and mahua). The thermal degradation was studied in an inert (N 2 ) atmosphere from ambient temperature to 700 C using heating rates of 10, 20, 30, 50, 100 C min À1 . The structure, chemical composition, and thermal properties were investigated by using Fourier Transform Infrared spectroscopy, differential scanning calorimetry (DSC), and XRD. The activation energy and pre-exponential factor based on Arrhenius equation were determined by using Coats and Redfern Integral method from the TGA data. V C 2013 AIP Publishing LLC.

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An investigation of the pyrolysis kinetics of some aliphatic amino acids

Cited by 37 publications

References 24 publications

Theoretical study on the unimolecular decomposition of proline

Theoretical study on the unimolecular decomposition of proline

Effects of protein and phosphate buffer concentrations on thermal denaturation of lysozyme analyzed by isoconversional method

Pyrolysis kinetics of de-oiled cakes by thermogravimetric analysis

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