Química Nova | |
Avaliação das incertezas associadas à determinação do parâmetro de solubilidade de Hildebrand de petróleos | |
Lyzette Gonçalves Moraes De Moura2  Marlus Pinheiro Rolemberg2  Antonio Carlos Da Silva Ramos2  Maria De Fátima Pereira Dos Santos1  Evaldo López Zilio1  | |
[1] ,Universidade Federal do Maranhão Departamento de Tecnologia Química São Luís MA ,Brasil | |
关键词: asphaltenes; Hildebrand solubility parameter; uncertainty propagation; | |
DOI : 10.1590/S0100-40422011000200011 | |
来源: SciELO | |
【 摘 要 】
Asphaltenes are fractions of crude oils that can precipitate and one of the parameters used in the prediction of the conditions in which this phenomenon occurs is the Hildebrand solubility parameter. In this work, it was evaluated the uncertainty propagation in the experimental determination of the solubility parameter of different crude oils, calculated from data of the asphaltenes precipitation by the addition of n-heptane, identified by optical microscopy. It was verified that the solubility parameter of an oil and the associated uncertainty are specific, being recommended that, whenever viable, it is determined parallel both, conferring higher credibility to the results.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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