Single Dalton Collision-Induced Dissociation for Petroleum Structure Characterization
| Autor: | Amy C. Clingenpeel, Michael R. Harper, Thomas R. Fredriksen, Ashley M. Wittrig, Kuangnan Qian |
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| Rok vydání: | 2017 |
| Předmět: |
Collision-induced dissociation
Chemistry General Chemical Engineering Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology Photoionization 010402 general chemistry Mass spectrometry 01 natural sciences Dissociation (chemistry) 0104 chemical sciences Ion Fuel Technology 020401 chemical engineering Isobar Molecule 0204 chemical engineering Ion cyclotron resonance |
| Zdroj: | Energy & Fuels. 31:13338-13344 |
| ISSN: | 1520-5029 0887-0624 |
| Popis: | Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS) has been used to assign elemental formulas to tens of thousands of ions generated from petroleum samples. While elemental formulas can give insights on hydrogen deficiency or heteroatom content, they do not directly give structural information. Previous broadband collision-induced dissociation (CID) experiments yielded useful information on the aromatic cores of petroleum molecules. However, it is difficult to track parent-product correlations in broadband experiments. In this work, isomers and isobars in a single dalton window were isolated and subjected to CID to obtain more conclusive information on the core structures of the ions. Several aromatic ring class fractions of a heptane deasphalted vacuum residue (VR) and the associated asphaltene fraction were examined by CID mass spectrometry. A 15T FT-ICR mass spectrometer was used with atmospheric pressure photoionization to probe the structural features of each fraction. Ions that ... |
| Databáze: | OpenAIRE |
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