Kinetic analysis of oxidation behavior of crude oil SARA constituents

In this research two Turkish crude oils (medium and heavy) were separated into their saturate, aromatic, resin, and asphaltene (SARA) fractions by column chromatographic techniques, and combustion experiments were carried out on whole crude oils and their fractions by thermogravimentric analysis (TD/DTG) under air atmosphere at a 10 degrees C/min heating rate. Investigation of SARA fractions allows quantitative determination of the temperature intervals at which evaporation, oxidation, and combustion effects operate for each fraction. In the course of this research, the kinetic parameters of SARA fractions were determined according to the Coats and Redfern technique. By using the data and findings of this research, one can take advantage of studying the kinetics of SARA fractions instead of those of the complex whole oil for modeling of the overall process to accurately predict combustion.


Thermal degradation of polysiloxane and polyetherester containing benzoxazine moieties in the main chain
Bagherifam, Shahla; Kışkan, Barış; Aydogan, Binnur; Yagci, Yusuf; Hacaloğlu, Jale (2011-01-01)
In this study investigation of thermal characteristics of polysiloxane and polyetherester containing benzoxazine moieties in the main chain was performed via pyrolysis mass spectrometry. Pyrolysis mass spectrometry analyses revealed that the thermal stability and the extent of cross-linking enhanced when the benzoxazine moieties were separated by thermally more stable units such as siloxanes. However, when the siloxane chain units were long, possibility of polybenzoxazine growth decreased significantly and ...
Thermal characterization, combustion and kinetics of different origin crude oils
Gundogar, Asli S.; Kök, Mustafa Verşan (2014-05-01)
In this research, the combustion behavior of six Turkish crude oils (light and medium type) was investigated by thermogravimetry/derivative thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC) methods under atmospheric air in the absence of rock matrix. Two main reaction intervals were observed on all thermograms known as low temperature oxidation (LTO) and high temperature oxidation (HTO) regions. The resulting curves showed that the mass loss under combustion is accompanied by exothermic ...
Thermal behavior and kinetics of crude oils at low heating rates by differential scanning calorimeter
Kök, Mustafa Verşan (2012-04-01)
The objective of this research was to investigate thermal behavior and kinetics of different origin crude oils in limestone matrix by differential scanning calorimeter (DSC) at low heating rates. In DSC experiments, three distinct reaction regions were identified in all of the crude oil + limestone mixtures known as low temperature oxidation (LTO), fuel deposition (FD) and high temperature oxidation (HTO) respectively. Kinetic analysis of the crude oil samples was determined by different models known as AST...
Solidification and crystallization behaviour of bulk glass forming alloys
Aybar, Sultan; Akdeniz, Mahmut Vedat; Department of Metallurgical and Materials Engineering (2007)
The aim of the study was to investigate the crystallization kinetics and solidification behaviour of Fe60Co8Mo5Zr10W2B15 bulk glass forming alloy. The solidification behaviour in near-equilibrium and non-equilibrium cooling conditions was studied. The eutectic and peritectic reactions were found to exist in the solidification sequence of the alloy. The bulk metallic glass formation was achieved by using two methods: quenching from the liquid state and quenching from the semi-state. Scanning electron microsc...
Pyrolysis analysis of crude oils and their fractions
Karacan, O; Kök, Mustafa Verşan (1997-03-01)
This research was conducted to investigate the pyrolysis behavior of crude oils and their fractions using differential scanning calorimetry and thermogravimetry. Experiments were performed at 10 degrees C/min heating rate under nitrogen atmosphere. An examination of the fractions of crude oils shows that pyrolysis mechanisms depend on the chemical nature of the constituents. A study of the weight loss properties of SARA constituents suggests that each fraction in whole crude oil follows its own reaction (di...
Citation Formats
M. V. Kök and R. Pamir, “Kinetic analysis of oxidation behavior of crude oil SARA constituents,” ENERGY & FUELS, pp. 580–588, 1998, Accessed: 00, 2020. [Online]. Available: