Exploring Occluded Compounds and Their Interactions with Asphaltene Networks Using High-Resolution Mass Spectrometry
| Autor: | Martha L. Chacón-Patiño, Marianny Y. Combariza, Jorge A. Orrego-Ruiz, Andrea Gómez-Escudero, Silvia J. Vesga-Martínez, Cristian Blanco-Tirado |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Chemistry General Chemical Engineering Heteroatom Intermolecular force Extraction (chemistry) Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Mass spectrometry Fourier transform ion cyclotron resonance Fuel Technology Column chromatography 020401 chemical engineering 0204 chemical engineering 0210 nano-technology Alkyl Asphaltene |
| Zdroj: | Energy & Fuels. 30:4550-4561 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b00278 |
| Popis: | In this contribution, we use high-resolution mass spectrometry to unveil the molecular composition of occluded compounds inside Colombian asphaltenes macrostructures. We use Soxhlet extraction, with n-heptane, coupled with asphaltene maceration to obtain four fractions enriched with chemical compounds occluded inside asphaltene networks. We focused our efforts on the fraction enriched with compounds interacting with asphaltenes via strong intermolecular forces, and used normal phase column chromatography to fractionate it and atmospheric pressure photoionization coupled to Fourier transform ion cyclotron resonance mass spectrometry to obtain a detailed molecular description. Our results indicate that the occluded compounds obtained in the last stage of the washing process are by themselves a complex mixture, consisting mostly of saturated compounds including molecular formulas corresponding to biomarkers, alkyl aromatics with high heteroatom content (up to four heteroatoms), vanadyl porphyrins, and highly... |
| Databáze: | OpenAIRE |
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