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Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials. / Altoe, Gisele F.; Freitas, Jair C. C.; Cunha, Alfredo G. et al.
In: Energy and Fuels, Vol. 23, No. 3, 19.03.2009, p. 1373-1378.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Altoe, GF, Freitas, JCC, Cunha, AG, Emmerich, FG & Smith, ME 2009, 'Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials', Energy and Fuels, vol. 23, no. 3, pp. 1373-1378. https://doi.org/10.1021/ef8009926

APA

Altoe, G. F., Freitas, J. C. C., Cunha, A. G., Emmerich, F. G., & Smith, M. E. (2009). Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials. Energy and Fuels, 23(3), 1373-1378. https://doi.org/10.1021/ef8009926

Vancouver

Altoe GF, Freitas JCC, Cunha AG, Emmerich FG, Smith ME. Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials. Energy and Fuels. 2009 Mar 19;23(3):1373-1378. doi: 10.1021/ef8009926

Author

Altoe, Gisele F. ; Freitas, Jair C. C. ; Cunha, Alfredo G. et al. / Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials. In: Energy and Fuels. 2009 ; Vol. 23, No. 3. pp. 1373-1378.

Bibtex

@article{138a5bc66d86461f9ef4df5ef5ab0bbe,
title = "Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials",
abstract = "The kinetics of oxygen incorporation into a PVC-derived material with pitch-like characteristics was studied by isothermal thermogravimetric analysis at temperatures ranging from 200 to 270 °C. Activation energy, Ea, pre-exponential factor, A, and rate constants, kT, were obtained from the weight-gain curves recorded during reactions of the material with molecular oxygen, which were analyzed following a kinetic first-order model. The numerical values obtained were Ea = 100.5 kJ/mol and A = 1.6 × 1010 h−1. The extent of the oxidation at a fixed temperature was monitored by elemental analysis, and the chemical changes in the materials were followed by solid-state 13C NMR. The study was next extended to the chars obtained from three coal tar pitches with different softening points (55, 85, and 110 °C). Comparisons were then established between the determined kinetic parameters and the chemical/structural aspects and compositions of each analyzed material.",
author = "Altoe, {Gisele F.} and Freitas, {Jair C. C.} and Cunha, {Alfredo G.} and Emmerich, {Francisco G.} and Smith, {Mark E.}",
year = "2009",
month = mar,
day = "19",
doi = "10.1021/ef8009926",
language = "English",
volume = "23",
pages = "1373--1378",
journal = "Energy and Fuels",
issn = "1520-5029",
publisher = "American Chemical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Kinetics and 13C NMR Study of Oxygen Incorporation into PVC- and Pitch-Derived Materials

AU - Altoe, Gisele F.

AU - Freitas, Jair C. C.

AU - Cunha, Alfredo G.

AU - Emmerich, Francisco G.

AU - Smith, Mark E.

PY - 2009/3/19

Y1 - 2009/3/19

N2 - The kinetics of oxygen incorporation into a PVC-derived material with pitch-like characteristics was studied by isothermal thermogravimetric analysis at temperatures ranging from 200 to 270 °C. Activation energy, Ea, pre-exponential factor, A, and rate constants, kT, were obtained from the weight-gain curves recorded during reactions of the material with molecular oxygen, which were analyzed following a kinetic first-order model. The numerical values obtained were Ea = 100.5 kJ/mol and A = 1.6 × 1010 h−1. The extent of the oxidation at a fixed temperature was monitored by elemental analysis, and the chemical changes in the materials were followed by solid-state 13C NMR. The study was next extended to the chars obtained from three coal tar pitches with different softening points (55, 85, and 110 °C). Comparisons were then established between the determined kinetic parameters and the chemical/structural aspects and compositions of each analyzed material.

AB - The kinetics of oxygen incorporation into a PVC-derived material with pitch-like characteristics was studied by isothermal thermogravimetric analysis at temperatures ranging from 200 to 270 °C. Activation energy, Ea, pre-exponential factor, A, and rate constants, kT, were obtained from the weight-gain curves recorded during reactions of the material with molecular oxygen, which were analyzed following a kinetic first-order model. The numerical values obtained were Ea = 100.5 kJ/mol and A = 1.6 × 1010 h−1. The extent of the oxidation at a fixed temperature was monitored by elemental analysis, and the chemical changes in the materials were followed by solid-state 13C NMR. The study was next extended to the chars obtained from three coal tar pitches with different softening points (55, 85, and 110 °C). Comparisons were then established between the determined kinetic parameters and the chemical/structural aspects and compositions of each analyzed material.

U2 - 10.1021/ef8009926

DO - 10.1021/ef8009926

M3 - Journal article

VL - 23

SP - 1373

EP - 1378

JO - Energy and Fuels

JF - Energy and Fuels

SN - 1520-5029

IS - 3

ER -