Solvatochromic and Solubility Parameters of Solvents: Equivalence of the Scales and Application to Probe the Solubilization of Asphaltenes
| Autor: | Marcia Cristina Khalil de Oliveira, Raphael A. de Lira, André B. Gonçalves, Gaspar González, Omar A. El Seoud, Vanessa N Linhares, Francis A Meireles, Edgar O. Moraes, Luzia P. Novaki |
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| Rok vydání: | 2016 |
| Předmět: |
SOLVENTE
Chemistry General Chemical Engineering Solvatochromism Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Solvent Hildebrand solubility parameter Fuel Technology 020401 chemical engineering Solubilization Polarizability Organic chemistry Polar Physical chemistry 0204 chemical engineering Solubility 0210 nano-technology Asphaltene |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.6b00461 |
| Popis: | The oil compatibility model is important for assessing the stability of crudes. The compatibility between maltenes and the corresponding asphaltenes, Asphs, can be assessed from the solubility parameters (Hildebrand and Hansen) of both components of the crude. Solvatochromism is the effect of the medium on the UV/vis spectra of substances (solvatochromic probes) that are sensitive to the properties of the medium, namely, its empirical (or overall) polarity, Lewis acidity and basicity, dipolarity, and polarizability. Therefore, the solubility and solvatochromic parameters of solvents should be related. We synthesized a novel solvatochromic probe (E-2,6-di-tert-butyl-4-(2-(1-hexylquinolin-1-ium-4-yl)vinyl)phenolate, HxQMBu2) whose properties are convenient to study in nonpolar and polar solvents. The empirical solvent polarities measured with HxQMBu2 in 38 solvents correlated linearly with the corresponding Hildebrand solubility parameters. Likewise, the solvent Lewis acidity/basicity, dipolarity, and polar... |
| Databáze: | OpenAIRE |
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