Naphthenic acids are minor constituents in most petroleum crudes; however, these acids have special significance due to their potential for corrosivity in refinery equipment. In order to evaluate the degree of corrosivity, it is important to identify the chemical nature of naphthenic acid constituents. This paper reports on a new Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) technique to positively identify and provide information on the relative abundance of the naphthenic acid as well as other polar and nonpolar species present in crude oil without special sample preparation. The new technique for in-depth chemical analysis of crudes leads to a better understanding and prediction of crude’s corrosive behavior. The corrosivity correlation data will be reported separately.

Subject
Acids, Materials, Composition, Naphthenic acid, Asphaltenes, Asphalt, Molecular weight, Distillation, Crude, Carbon, Deposit corrosion, Samples, Oil
Keywords:
FT-ICR mass spectrometry, mass spectrometry, oil, deposits, corrosion, distillation, heteroatom, polar species, elemental composition, Athabasca bitumen
© 2006 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2006
Association for Materials Protection and Performance (AMPP)
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