Solid state 13C nuclear magnetic resonance of heavy oil/bitumen-derived solids |
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| Affiliation: | 1. CERIS, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal;2. Laboratório Nacional de Engenharia Civil, Avenida do Brasil 101, 1700-066 Lisboa, Portugal;3. CERENA, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal;4. LUSASFAL, Derivados Asfálticos de Portugal, S.A., 7080-341 Vendas Novas, Portugal;5. Construções JJR & Filhos, S.A., 2495-185 Santa Catarina da Serra, Portugal |
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| Abstract: | Solid state 13C n.m.r. analysis of the insoluble organic matter associated with the clay mineral, silica, and heavy metal minerals of heavy oils/bitumen is reported. The conditions under which these measurements can be made are related to the concentration of organic matter found, the nature and amount of paramagnetic constituents, and contact times. The data are related to changes in hydrophilic/hydrophobic surface properties of the solids. The relationship with bitumen losses in recovery processes is also discussed. |
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