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  3. AN ALTERNATIVE PREPARATION OF ORGANOFUNCTIONALIZED SILICA-GELS AND THEIR CHARACTERIZATION BY 2-DIMENSIONAL HIGH-RESOLUTION SOLID-STATE HETERONUCLEAR NMR CORRELATION SPECTROSCOPY

AN ALTERNATIVE PREPARATION OF ORGANOFUNCTIONALIZED SILICA-GELS AND THEIR CHARACTERIZATION BY 2-DIMENSIONAL HIGH-RESOLUTION SOLID-STATE HETERONUCLEAR NMR CORRELATION SPECTROSCOPY

TitleAN ALTERNATIVE PREPARATION OF ORGANOFUNCTIONALIZED SILICA-GELS AND THEIR CHARACTERIZATION BY 2-DIMENSIONAL HIGH-RESOLUTION SOLID-STATE HETERONUCLEAR NMR CORRELATION SPECTROSCOPY
Publication TypeJournal Article
Year of Publication1992
AuthorsFyfe, CA, Zhang, Y, Aroca, P
JournalJournal of the American Chemical Society
Volume114
Pagination3252-3255
Date PublishedApr
Type of ArticleArticle
ISBN Number0002-7863
KeywordsCROSS-POLARIZATION, NUCLEAR MAGNETIC-RESONANCE, SURFACE
Abstract

High-resolution solid-state Si-29 CP/MAS NMR spectroscopy has been used to characterize methyl functionalized silica gels prepared by the copolymerization of tetraethoxysilane and methyltriethoxysilane. One-dimensional Si-29 CP/MAS NMR indicates that the two components are present in the correct proportions in the gel, but it is not sensitive to the degree of mixing. A two-dimensional H-1/Si-29 correlation experiment clearly demonstrates that the two components are not phase-separated, but are mixed in the final gel.
URL<Go to ISI>://A1992HQ81400014