Characterization of Acid-Soluble Oxidized Asphaltenes by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry: Insights on Oxycracking Processes and Asphaltene Structural Features
| Autor: | Renzo C. Silva, Pedro Pereira-Almao, Thomas B. P. Oldenburg, Steve Larter, Lante Carbognani Ortega, Melisa Brown, Ursula Ehrmann, Farouq Ahmed, Jagoš R. Radović |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Electrospray Atmospheric pressure Chemistry General Chemical Engineering Inorganic chemistry Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Mass spectrometry 6. Clean water Fourier transform ion cyclotron resonance Solvent Fuel Technology 020401 chemical engineering 13. Climate action Organic matter 0204 chemical engineering 0210 nano-technology Dissolution Asphaltene |
| Zdroj: | Energy & Fuels. 30:171-179 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.5b02215 |
| Popis: | The dissolution of organic matter into water via oxidative processes, named oxycracking, has been practiced for a long time for the removal of organic pollutants, in which oxygen induces breakage and functionalization of organic molecules. Recently, oxycracking has been explored as an alternative approach to handling the increased amount of solid residues produced in oil sands upgrading activities that involve carbon rejection in solvent deasphalting units. This study uses an asphaltene-rich feedstock, operationally known as petroleum pitch, isolated from an Athabasca bitumen vacuum residue, which was submitted to oxycracking reactions at 200 and 220 °C. The feed and water-soluble fractions isolated at pH 1, termed acid-soluble oxidized asphaltenes (ASOA), were analyzed by ultrahigh-resolution mass spectrometry [Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS)] using electrospray and atmospheric pressure photoionization ion sources. FTICR-MS analysis revealed extensive oxidation of a... |
| Databáze: | OpenAIRE |
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