A simple liquid state 1H NMR measurement to directly determine the surface hydroxyl density of porous silica. Issue 95 (16th November 2021)

• Record Type: Journal Article
• Authors: Penrose, C.; Steiner, P.; Gladden, L. F.; Sederman, A. J.; York, A. P. E.; Bentley, M.; Mantle, M. D.
• Is Part Of: Chemical communications. Volume 57:Issue 95(2021)
• Page Start: 12804
• Page End: 12807
• Publication Date: 2021-11-16
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc03959h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Silica is widely used in industrial applications and its performance is partially decided by its surface hydroxyl density α OH . Abstract : Silica is widely used in industrial applications and its performance is partially decided by its surface hydroxyl density α OH . Here we report a quick, simple liquid 1 H NMR method to determine α OH using a benchtop 1 H NMR spectrometer. The results show excellent agreement with the literature with an α OH range from 4.16 to 6.56 OH per nm 2 .