Inline Analysis of the Dry Reforming Process through Fourier Transform Infrared Spectroscopy and Use of Nitrogen as an Internal Standard for Online Gas Chromatography Analysis
2014
Lee, Roland | Labrecque, Raynald | Lavoie, Jean-Michel
In this work, Fourier transform infrared spectroscopy (FTIR) was used as a process analytical tool (PAT), allowing for quantification of the output gas from a dry reforming of methane (DRM) reaction. This PAT was correlated with gas chromatography (GC) analysis, where nitrogen was used as an internal standard. Because nitrogen does not react under dry reforming (DR) conditions (1 atm and 700–950 °C), it was found to be reliable and accurate, thus allowing for an easy mass balance of the reaction. N₂ as an internal standard allowed for a more streamlined determination of the effect of the temperature and flow rate on conversion of CO₂ and CH₄. The DRM reaction is an example of thermal processes where FTIR could be used as an inline process analytical tool, allowing for fast carbon balance determination (quantification of CO₂, CH₄, and CO). Such a PAT could downstream be adapted to process as gasification, pyrolysis, and most of the methane-reforming processes.
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