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Does Water Affect the Acidity of Surfaces? The Proton‐Donating Ability of Silanol and Carboxylic Acid Groups at Mesoporous Silica
Author(s) -
Gurinov Andrey A.,
Mauder Daniel,
Akcakayiran Dilek,
Findenegg Gerhard H.,
Shenderovich Ilya G.
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201200204
Subject(s) - silanol , chemistry , solvation , carboxylic acid , mesoporous material , mesoporous silica , proton , organic chemistry , inorganic chemistry , solvent , catalysis , physics , quantum mechanics
Solvation at the interphase: A study of the influence of water on the effective acidity of silanol and carboxylic acid groups of propionic acid functionalized SBA‐15 reveals that to affect the proton‐donating ability of an acidic group at the surface, water should be able to form a solvation shell around that group. As a result, water does not affect the acidity of native SBA‐15 but dramatically enhances that of SBA‐15 functionalized with propionic acid moieties.