Assessing raw materials as potential adsorbents to remove acidic compounds from Brazilian crude oils by ESI (-) FT-ICR MS
| Autor: | Lorraine Louise Grecco Cavalcanti De Araujo, Marcos A. Pudenzi, Laercio Lopes Martins, Tatiana V. Isidorio, Geizila A.P. Abib, Georgiana Feitosa da Cruz, Victor Hugo Santos |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
020209 energy
Science Petroleomics 02 engineering and technology Raw material Mass Spectrometry chemistry.chemical_compound adsorbent Adsorption 020401 chemical engineering 0202 electrical engineering electronic engineering information engineering Naphthenic acid medicine naphthenic acid polar compounds 0204 chemical engineering petroleum Multidisciplinary Chromatography Fourier Analysis Silica gel ESI (-) FT-ICR MS chemistry Bentonite Oil shale petroleomics Brazil Activated carbon medicine.drug |
| Zdroj: | Anais da Academia Brasileira de Ciências, Vol 92, Iss 3 (2020) Anais da Academia Brasileira de Ciências, Volume: 92, Issue: 3, Article number: e20200214, Published: 02 DEC 2020 Anais da Academia Brasileira de Ciências v.92 n.3 2020 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC |
| ISSN: | 1678-2690 |
| Popis: | The presence of acidic compounds as naphthenic acids in crude oil causes several problems for the petroleum industry, including corrosion in both upstream and downstream production processes. Based on this scenario, the main objective of this work was to investigate the removal of the acidic compound from two Brazilian heavy oils by adsorption processes using six potential adsorbents: powdered shale, activated carbon, bentonite, silica gel, powdered sandstone and powdered wood. These raw materials were previously characterized by conventional and surface analysis techniques, which show that they offer a good surface area and thermal stability. To evaluate the removal efficiency at the molecular level, the crude oil samples and the filtered oils were analyzed by negative electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry [ESI (-) FTICR MS]. The O2 class, which is related to the relatively high acidity of the samples, was the most abundant in both crude oil samples, moreover, this class was more retained by adsorbents. Silica gel, activated carbon and bentonite were the best adsorbents of acidic compounds from the tested oils, in agreement with their markedly higher surface area and porous volume. Additionally, a chromatographic analysis was performed and showed no changes in the oil profile. |
| Databáze: | OpenAIRE |
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