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Infrared Study of the Sorption of Phenol and p‐Nitrophenol by Montmorillonite
Author(s) -
Saltzman S.,
Yariv S.
Publication year - 1975
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1975.03615995003900030029x
Subject(s) - phenol , chemistry , montmorillonite , nitrophenol , sorption , substituent , proton , phenols , ring (chemistry) , inorganic chemistry , infrared spectroscopy , nitro , medicinal chemistry , organic chemistry , catalysis , adsorption , physics , alkyl , quantum mechanics
The sorption of phenol and p ‐nitrophenol by montmorillonite saturated with different cations was studied by IR and X‐ray spectroscopy. Various associations between interlayer cations, water, and phenols were proven. Depending on the nature of the cation, phenol can act either as a proton donor or acceptor. The electrophylic NO 2 substituent of the ring increases the acidic strength of the phenol group: therefore, p ‐nitrophenol tends to behave mainly as a proton donor. The nitro‐group acts as an electron donor and, depending on the hydration status of the clay, either accepts protons from water coordinated to cations, or directly coordinates to the metallic cations.
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