Associated species in vaporized methanol-formaldehyde solutions

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200022a017· OSTI ID:5525830

Silverman, D C; Freeman, J J

Analysis of vaporized methanolic formaldehyde (50 mol % methanol) by gas chromatography revealed a sum of mole percents of formaldehyde, water, and methanol greater than 100%. This inconsistency was not found with vaporized solutions containing 1 or 10 mol % methanol. Direct evidence for an adduct of methanol and formaldehyde (CH/sub 3/OCH/sub 2/OH) in the vapor phase was found by use of infrared spectroscopy. The spectrum exhibited an absorption at 1140 cm/sup -1/ corresponding to a C-O-C stretch. Reasonable agreement was found between the C-O-C mole percent estimated from infrared spectroscopy, the increased amount of material detected by gas chromatography, and the estimated equilibrium mole percent of the adduct CH/sub 3/OCH/sub 2/OH. These results confirm that in completely vaporized methanolic formaldehyde at 373 to 423 K, one type of adduct predominates. It contains one molecule each of formaldehyde and methanol.

• Research Organization: Monsanto Company, St. Louis, Missouri 63167
• OSTI ID: 5525830
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 22:3; ISSN IEPDA
• Country of Publication: United States
• Language: English

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10 SYNTHETIC FUELS
ABSORPTION
ADDUCTS
ALCOHOLS
ALDEHYDES
CHROMATOGRAPHY
EVAPORATION
FORMALDEHYDE
GAS CHROMATOGRAPHY
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFRARED SPECTRA
MEDIUM TEMPERATURE
METHANOL
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SEPARATION PROCESSES
SPECTRA
WATER