Comprehensive Characterization of Petroleum Acids by Distillation, Solid Phase Extraction Separation, and Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
| Autor: | Kuangnan Qian, Thomas R. Fredriksen, Amy C. Clingenpeel, Michael R. Harper |
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| Rok vydání: | 2018 |
| Předmět: |
Chromatography
Fouling Chemistry Vacuum distillation General Chemical Engineering 010401 analytical chemistry Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Mass spectrometry 01 natural sciences Fourier transform ion cyclotron resonance 0104 chemical sciences law.invention Boiling point chemistry.chemical_compound Fuel Technology law Petroleum Solid phase extraction 0210 nano-technology Distillation |
| Zdroj: | Energy & Fuels. 32:9271-9279 |
| ISSN: | 1520-5029 0887-0624 |
| Popis: | Crude acids or petroleum acids are considered to be one of the prime contributors to corrosion, emulsion, and fouling issues across upstream, downstream, and chemical operations. Thus, the composition of crude acids has been extensively studied in the last several decades. To achieve molecular level characterization, mass spectrometry is typically applied. However, one of the challenges in mass spectrometry characterization is that the dynamic range of the technique can severely limit the compositions observed. Here, we employ multiple separations before analyzing crude oil acid fractions to overcome this limitation. First, a whole crude (WC) oil was distilled into boiling point fractions including vacuum gas oil (VGO) and vacuum residue (VR). Acids were then collectively isolated from the VGO and VR fractions as well as the starting WC using a solid phase extraction (SPE) method. Isolated acids were also further separated by molecular weight (MW) using a similar SPE technique. The acid fractions were the... |
| Databáze: | OpenAIRE |
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