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March 8 - 12, 2021


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Virtual Pittcon 2021

A New Methanizer for GC-FID

  • Session Number: S08-05
Monday, March 08, 2021: 11:05 AM - 11:40 AM


Andrew Jones
Activated Research Company
Tommy Saunders
Activated Research Company


A methanizer is a device for converting CO and CO2 into CH4 so they can be detected by an ordinary flame ionization detector (FID). The typical methanizer design has remained unchanged for over 50 years and consists of heated tube filled with a toxic nickel catalyst. This design has several drawbacks beyond the toxicity of the catalyst including poor reactivity, peak broadening, fast poisoning, leaky fittings, an extra heater/thermal zone, and a bulky design. Recently, a new methanizer was designed that incorporates a novel catalyst into the FID jet. The resulting Jetanizer™ yields the same linear range as legacy methanizers, but with improved peak shape and the ability to convert small aldehydes (e.g., formaldehyde) to CH4. The performance of the catalyst is not affected by water or chlorinated species and has an intrinsically higher resistance to poisons (e.g., sulfur-containing molecules) than nickel-based designs. Because the catalyst is contained within an FID jet, the FID supplies the necessary heat and gases for the reactions to occur. Perhaps the biggest advantage of this design is the ability to convert any GC-FID to a methanizer in less than 5 min. by simply swapping the jet with a Jetanizer, or vice versa. Here, we show the utility of this device for the analysis of low- and high-level CO, CO2, and aldehydes with a specific focus on linearity, reproducibility, and peak shape.

Additional Info

Keywords: Please select up to 4 keywords ONLY:
Chromatography - Other,Specialty Gas Analysis,Fuels/Petrochemical

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