Navegação Ciências Exatas e da Terra por Autor "Leal, Katia Zaccur"
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Evaluation of the chemical composition and structure of asphaltenes from there offshore brazilian biodegrades heavy oils
Severino, Hemmely Guilhermond de Souza; Pinto, Christiane Beátrice Duyck; Spigolon, André Luiz; Mello, Carlos Siqueira Bandeira de; Silva, Taís Freitas da; Leal, Katia Zaccur (2021) [Artigo de periódico]Asphaltenes fractions were extracted and purified from three heavy Brazilian oils. Their mass compositions of C, H, N, Ni and V were obtained from elemental analysis and S and O atomic percentages from EDS. The H/C ratios ...