Investigating Molecular Masses Formed during the Heat Treatment of Petroleum Pitches by Mass Spectrometry

Maria Helena Pereira1, Luiz de Castro1 and Ricardo Michel2
Affiliation: 
1 Centro Technologico do Exercito (CTEX) – Avenida dasAmericas 28.705 Guaratiba, 23020-470 Rio de Janeiro, Brasil; helena.carbono@gmail.com.br 2 Instituto de Macromoleculas Professora Eloisa Mano, Universidade Federal do Rio de Janeiro, Centro de Technologia, Bloco J 21945-70, Rio de Janeiro, Brasil
DOI: 
https://doi.org/10.23939/chcht07.02.131
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Abstract: 
Mass spectrometry was used to characterize isotropic and anisotropic pitches as well as the parent heavy petroleum oil in order to investigate the molecular mass distributions (MMD) and changes during the heat treatment process. Sample preparation and matrix choice have a strong influence on MMD and results confirmed the oligomeric nature and the increasing molecular sizes as heat treatment proceeds.
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