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Skip to Search Results- 5asphaltenes
- 2hydrogen transfer
- 1Visbreaking
- 1alkyl phosphoric acid esters
- 1cracked naphtha
- 1dilatational viscoelastic properties
- 1Arno De Klerk (Department of Chemical and Materials Engineering)
- 1De Klerk, Arno (Chemical and Materials Engineering)
- 1Montoya Sánchez, Natalia Rocío (Chemical and Materials Engineering)
- 1Zeng, Hongbo (Chemical and Materials Engineering)
- 1de Klerk, Arno
- 1de Klerk, Arno (Chemical and Materials Engineering)
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Fall 2019
During thermal cracking of bitumen, olefins are formed via free radical reactions and are mainly concentrated in the naphtha and distillate cut of the upgraded bitumen. Olefins are undesirable in the upgraded bitumen product because they are associated with equipment fouling. As a result, these...
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Dynamic Interfacial Tensions and Dilatational Viscoelastic Properties of Asphaltenes at Oil/Water Interface at High Pressure and High Temperature Conditions
DownloadFall 2021
The dynamic interfacial tension and dilatational viscoelasticity behaviors of asphaltenes at oil/water interfaces were investigated by means of an oscillating droplet tensiometer. This oscillating droplet tensiometer was modified to handle temperature of 120 °C and pressure up to 700 kPa. For...
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Fall 2019
Thermal cracking of heavy oils is important industrially in processes such as visbreaking, coking and residue hydroconversion. In these processes, residue conversion is limited by formation of heavy products. Heavy product formation also contributes to industrially relevant problems such as...
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Fall 2019
Asphaltenes, defined as a solubility class, are soluble in toluene and insoluble in paraffinic solvents such as 𝐶5 and 𝐶7. Asphaltenes have high heteroatom and a low H/C ratio compared to bitumen’s other fractions. Moreover, they have a complex structure, high molecular weight, and high melting...
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The Formation of New Asphaltenes during Visbreaking of Vacuum Residue Deasphalted Oil and the Storage Stability of Product from Visbreaking
DownloadSpring 2020
Mild thermal cracking by visbreaking emerged as an important partial upgrading technology for reducing the viscosity of Canadian oilsands bitumen to enable pipeline transport. Under typical visbreaking conditions, the conversion of bitumen is described by first-order kinetics, which forms the...