Nanoaggregates and Structure−Function Relations in Asphaltenes

Autor:	Cristina M. Quintella, Oliver C. Mullins, Gabriel Buffin, Gaëlle Andreatta, Fabricio Arteaga-Larios, Neil Bostrom, Emmanuelle Perez, Cristiane Carla Gonçalves
Rok vydání:	2005
Předmět:	Fuel Technology Quenching (fluorescence) Chemical physics Chemistry General Chemical Engineering Structure function Energy Engineering and Power Technology Mineralogy Agrégation Asphaltene
Zdroj:	Energy & Fuels. 19:1282-1289
ISSN:	1520-5029 0887-0624
Popis:	The goal of predictive science is to establish structure−function relations for a system of interest. The obvious first step is to determine the structure of the system. Predictions in asphaltene science have been greatly inhibited, because of disagreement regarding molecular weight and molecular structure. With substantial progress on both structural fronts, structure−function relationships can be explored. Here, high quality factor (high-Q) ultrasonics is used to demonstrate asphaltene nanoaggregation at ∼100 mg/L. Fluorescence quenching measurements corroborate these results. Simple concepts regarding asphaltene molecular structure can be used to understand asphaltene nanoaggregation. These relations are seen to apply for asphaltene samples of very different origin. The implications of this understanding on larger-scale asphaltene aggregation and solubility are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4ab7cd2f60d60c78281c717fdce595dc https://doi.org/10.1021/ef0497762 Zobrazit plný text záznamu