Atmospheric methanol measurement using selective catalytic methanol to formaldehyde conversion

A novel atmospheric methanol measurement technique, employing selective gas-phase catalytic conversion of methanol to formaldehyde followed by detection of the formaldehyde product, has been developed and tested. The effects of temperature, gas flow rate, gas composition, reactor-bed length, and rea...

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Bibliographic Details
Published in:Atmospheric chemistry and physics 2005-10, Vol.5 (10), p.2787-2796
Main Authors: Solomon, S. J., Custer, T., Schade, G., Soares Dias, A. P., Burrows, J.
Format: Article
Language:English
Subjects:
Ocean, Atmosphere
Sciences of the Universe
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Summary:A novel atmospheric methanol measurement technique, employing selective gas-phase catalytic conversion of methanol to formaldehyde followed by detection of the formaldehyde product, has been developed and tested. The effects of temperature, gas flow rate, gas composition, reactor-bed length, and reactor-bed composition on the methanol conversion efficiency of a molybdenum-rich, iron-molybdate catalyst [Mo-Fe-O] were studied. Best results were achieved using a 1:4 mixture (w/w) of the catalyst in quartz sand. Optimal methanol to formaldehyde conversion (>95% efficiency) occurred at a catalyst housing temperature of 345°C and an estimated sample-air/catalyst contact time of
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-5-2787-2005