The application of Raman spectroscopy for hydrocarbon speciation is described and recent advances in real time monitoring have been highlighted. The vibrational properties of hydrocarbon molecules were modeled using Density Function Theory and results were correlated with Raman spectra. The influence of pressure and temperature on Raman modes was described. The speciation of gas mixtures containing C1 – C4 hydrocarbons and concentration of vapor phase components were derived from Raman spectra analysis. Calibration curves showing the dependence of Raman line intensities as a function of hydrocarbon concentration have been presented to validate applicability of Raman spectroscopy for hydrocarbon detection. The minimum hydrocarbon concentration detectable by Raman spectroscopy has also been quantified. Results obtained indicate that Raman spectroscopy is a reliable tool for quantifying and monitoring industrial processes.

Subject
Water, Materials, Ion speciation, Stretching, Raman spectroscopy, Propane, Gas pressure, Mixtures, Vapors, Methane, Vibration, Hydrocarbons, Samples
Keywords:
process monitoring, hydrocarbons, Raman spectroscopy, gas speciation
© 2017 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).
2017
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.