TY - JOUR
T1 - Raman spectroscopy of the reaction of sodium chloride with nitric acid
T2 - Sodium nitrate growth and effect of water exposure
AU - Zangmeister, Christopher D.
AU - Pemberton, Jeanne E.
PY - 2001/4/19
Y1 - 2001/4/19
N2 - The reaction of powdered NaCl with HNO3 was studied using Raman spectroscopy. NaNO3 growth was monitored as a function of HNO3 exposure in a flow cell. Mode-specific changes in the NO3- vibrational mode intensities with HNO3 exposure suggest a rearrangement of the NaNU3 film with coverage. In the absence of H2O, intensities of NaNO3 bands increase with HNOj exposure until a capping layer of NaNO3 forms. The capping layer prevents subsequent HNO3 from reacting with the underlying NaCl. H2O exposure of NaNO3-capped NaCl results in hydration of the surface to form an aqueous solution containing NaNO3 and NaCl. Further exposure results in the formation of a thicker surface-adsorbed H2O layer that is consistent with an aqueous NaNO3 and NaCl solution. Upon exposure of hydrated NaCl to HNO3, molecular HNO3 and solid-state NaNO3 are observed in the thin H2O film.
AB - The reaction of powdered NaCl with HNO3 was studied using Raman spectroscopy. NaNO3 growth was monitored as a function of HNO3 exposure in a flow cell. Mode-specific changes in the NO3- vibrational mode intensities with HNO3 exposure suggest a rearrangement of the NaNU3 film with coverage. In the absence of H2O, intensities of NaNO3 bands increase with HNOj exposure until a capping layer of NaNO3 forms. The capping layer prevents subsequent HNO3 from reacting with the underlying NaCl. H2O exposure of NaNO3-capped NaCl results in hydration of the surface to form an aqueous solution containing NaNO3 and NaCl. Further exposure results in the formation of a thicker surface-adsorbed H2O layer that is consistent with an aqueous NaNO3 and NaCl solution. Upon exposure of hydrated NaCl to HNO3, molecular HNO3 and solid-state NaNO3 are observed in the thin H2O film.
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U2 - 10.1021/jp003374n
DO - 10.1021/jp003374n
M3 - Article
AN - SCOPUS:0035912405
SN - 1089-5639
VL - 105
SP - 3788
EP - 3795
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
IS - 15
ER -