Search
Skip to Search Results- 6Xu, Zhenghe (Chemical and Materials Engineering)
- 3Dew, Steven (Electrical and Computer Engineering)
- 3Gupta, Rajender (Chemical and Materials Engineering)
- 3Liu, Qingxia (Chemical and Materials Engineering)
- 3Stepanova, Maria (Electrical and Computer Engineering)
- 3Zeng, Hongbo (Chemical and Materials Engineering)
-
Spring 2013
The self-association properties of two model compounds of asphaltene, 2,6-bis[2-(pyren-1-yl)ethyl]pyridine (PyPPy, C41H29N) and 2,6-bis[2-(phenanthren-9-yl)ethyl]pyridine (PhPPh, C37H29N), were studied in deuterated chloroform and deuterated methylene chloride. 1H NMR spectroscopy titration...
-
Fall 2015
Oil sands found in Athabasca and Cold Lake regions of Northern Alberta form Canada’s primary source of energy reserves. Asphaltenes, a significant part of bitumen is often considered to be the least valuable component of crude oil due to various factors such as difficulty in transporting and...
-
Spring 2016
During the extraction of crude oil or bitumen, stable water-in-oil emulsions are inevitably formed. The emulsified water contains chloride ions and other organic acidic compounds that cause severe corrosion problems to the downstream plant equipment, creating operational and safety issues and...
-
Characterization of asphaltene molecular structures by cracking under hydrogenation conditions and prediction of the viscosity reduction from visbreaking of heavy oils
DownloadSpring 2013
The chemical building blocks that comprise petroleum asphaltenes were determined by cracking samples under conditions that minimized alterations to aromatic and cycloalkyl groups. Hydrogenation conditions that used tetralin as hydrogen-donor solvent, with an iron-based catalyst, allowed...
-
Characterization of Athabasca asphaltenes separated physically and chemically using small-angle X-ray scattering
DownloadFall 2010
Athabasca asphaltenes were characterized using small-angle X-ray scattering (SAXS) with synchrotron radiation. Two methods were used to separate asphaltenes from Athabasca bitumen. Conventional chemical separation by precipitation with n-pentane, and physical separation realized by passing...
-
Fall 2009
In this study, we describe the use of different silica materials to separate vanadium compounds from Asphaltenes. We used high performance flash chromatography separation method to separate asphaltenes at different solvent strengths on sea sand. The separation conditions were optimized for flow...
-
Control of D-Spacing and Graphitic Defects in Asphaltene-Derived Hard Carbons for Energy Storage
DownloadSpring 2024
With the increasing demand for energy storage and declining lithium stores around the globe, sodium is emerging as an alternative source due to its natural abundance and similar reaction kinetics and chemical properties to lithium. While sodium-ion and lithium-ion batteries started development at...
-
Spring 2015
This thesis presents a thorough examination of the corrosion and fouling behaviour of crude oil at refining conditions on industrially applicable heat transfer surfaces. The depletion of light sweet crude oil reserves means that the processing of ever heavier and more sour crude oils is...
-
Design and Fabrication of Fractal Photoconductive Terahertz Emitters and Antenna Coupled Tunnel Diode Terahertz Detectors
DownloadFall 2012
Improved terahertz (THz) photoconductive antennas that are able to both emit higher THz radiation power and detect lower THz radiation signal levels than the traditional THz photoconductive antennas are presented. Also, different classes of fractals are investigated to realize whether the...
-
Spring 2023
Plasmonic nanostructures have received increasing attention due to their unique ability to mediate the conversion of light into different forms of energy. This opens pathways for numerous applications from ultrasensitive surface-enhanced Raman scattering (SERS) materials characterization to...