NMR studies of the equilibria and reaction rates in aqueous solutions of formaldehyde

The Journal of Physical Chemistry. B
Michal RivlinGil Navon

Abstract

Formaldehyde has an important role in the chemical industry and in biological sciences. In dilute aqueous solutions of formaldehyde only traces of the molecular formaldehyde are present and the predominant species are methylene glycol and in lower concentrations, dimethylene glycol. The chemical equilibria and reaction rates of the hydration of formaldehyde in H2O and D2O solutions at low concentrations were studied by (1)H and (13)C NMR at various conditions of pH (1.8-7.8) and temperature (278-333 K). These measurements became possible by direct detection of formaldehyde (13)C and (1)H peaks. The equilibrium and rate constants of the dimerization reaction of methylene glycol were also measured. The rate constants for both the hydration and the dimerization reactions were measured by a new version of the conventional selective inversion transfer method. This study, together with previous published work, completes the description of dynamics and equilibria of all the processes occurring in dilute aqueous formaldehyde solutions.

References

Oct 23, 1970·Biochemical and Biophysical Research Communications·R K Gupta, A G Redfield
Mar 21, 2002·Journal of the American Chemical Society·Uzi Eliav, Gil Navon
Nov 7, 2013·The Journal of Physical Chemistry. a·Jeremy KuaWilliam D Smith
Mar 19, 2014·Journal of Magnetic Resonance·Michal RivlinGil Navon

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Citations

Jan 1, 2020·Fungal biology and biotechnology·Eija VartiainenMerja Penttilä
Dec 30, 2020·The Journal of Physical Chemistry Letters·Swarit DwivediAkshat Tanksale
Feb 23, 2021·Angewandte Chemie·Emma E BrothertonSteven P Armes
May 18, 2021·Chemical Communications : Chem Comm·Xiaolei ChenRichard J Hopkinson
Sep 9, 2021·Chemistry : a European Journal·Krishnamoorthy SathiyanTomer Zidki
Oct 23, 2021·Atmospheric Chemistry and Physics·Andreas TilgnerV Faye McNeill
Nov 2, 2021·The Journal of Organic Chemistry·David Sánchez-RoaJuan Cámpora
Nov 27, 2021·Energy & Fuels : an American Chemical Society Journal·Taina Ohra-AhoHans Heeres

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