Online High Throughput Measurements for Fast Catalytic Reactions Using Time-Division Multiplexing Gas Chromatography

Analytical Chemistry
Marco R WunschOliver Trapp

Abstract

Developing new catalysts is crucial for optimization of chemical processes. Thus, advanced analytical methods are required to determine the catalytic performance of new catalysts accurately. Usually, gas chromatographic methods are employed to analyze quantitatively the product distribution of volatile compounds generated by a specific catalyst. However, the characterization of rapidly changing catalysts, e.g., due to deactivation, still poses an analytical challenge because gas chromatographic methods are too slow for monitoring the change of the complex product spectra. Here, we developed a gas chromatographic technique based on the concept of multiplexing gas chromatography (mpGC) for fast and comprehensive analysis of the product stream from a catalytic testing unit. This technique is applied for the study of the catalytic reaction of methanol-to-olefins (MTO) conversion. For this method, the time distance between two measurements is chosen so that the chromatograms but not the peaks themselves are superimposed. In this way, stacked chromatograms are generated in which the components from successively injected samples elute baseline separated next to each other from the column. The peaks from different samples are interlace...Continue Reading

References

Jan 1, 1990·Journal of Chromatography·J R ValentinJ F Becker
Jun 23, 2007·Angewandte Chemie·Oliver Trapp
Nov 24, 2007·Journal of Chromatography. a·Oliver Trapp
May 4, 2010·Journal of Chromatography. a·Oliver Trapp
Feb 16, 2013·Journal of Pharmaceutical and Biomedical Analysis·Robert PappLouis-David Cantin
Oct 13, 2015·Journal of Separation Science·Alexander F Siegle, Oliver Trapp
Jan 10, 2016·Journal of Chromatography. a·Kerstin ZawatzkyChristopher J Welch
May 2, 2016·Journal of Chromatography. a·Alexander F Siegle, Oliver Trapp
Jun 14, 2016·Journal of Separation Science·Wes SchaferChristopher J Welch
Mar 10, 2017·Analytical Chemistry·Marco R WunschOliver Trapp

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Citations

Mar 27, 2019·The Analyst·Hiroka KishiHajime Ohtani

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