Oxidative Destruction of Bitumen in the Presence of Minerals

The oxidation of BND 50/70 bitumen in the presence of minerals is investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). The minerals present are quartz, calcite, hornblende, oligoclase, orthoclase perthite, potassium–sodium feldspar, muscovite, and granite. Ana...

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Veröffentlicht in:	Coke and chemistry (New York, N.Y.) N.Y.), 2020-12, Vol.63 (12), p.576-581
Hauptverfasser:	Vasilyev, V. V., Ivkin, A. S., Salamatova, E. V., Povarov, V. G., Maidanova, N. V., Kalinin, M. V., Strakhov, V. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bitumens Calcite Chemistry Chemistry and Materials Science Differential scanning calorimetry Industrial Chemistry/Chemical Engineering Lime Minerals Muscovite Orthoclase Oxidation Oxidation rate Temperature effects Thermogravimetric analysis
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Beschreibung
Zusammenfassung:	The oxidation of BND 50/70 bitumen in the presence of minerals is investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). The minerals present are quartz, calcite, hornblende, oligoclase, orthoclase perthite, potassium–sodium feldspar, muscovite, and granite. Analysis in terms of the thermal effect indicates that, in the range 200–340°C in an air flux, the oxidation (oxidative aging) of bitumen is 6–10 times faster in the presence of the minerals. With increase in silicon-dioxide content and decrease in calcium-oxide content in the minerals, the oxidation rate of the bitumen significantly increases.
ISSN:	1068-364X 1934-8398
DOI:	10.3103/S1068364X2012008X