Interior hydroxyls of the silica gel system as studied by silicon-29 CP-MAS NMR spectroscopy

Autor:	I Ssuer Chuang, Gary E. Maciel, David R. Kinney
Rok vydání:	1993
Předmět:	Mas nmr spectroscopy Geminal Silicon Silica gel Analytical chemistry chemistry.chemical_element General Chemistry Biochemistry Catalysis chemistry.chemical_compound Colloid and Surface Chemistry Deuterium chemistry Physical chemistry
Zdroj:	Journal of the American Chemical Society. 115:8695-8705
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja00072a024
Popis:	Silica gels were deuterium-exchanged with D 2 O at 25 and 100 o C. 29 Si CP-MAS NMR results indicate that for a silica gel with lower surface area, 9.3% of the single silanols remains undeuterated at 25 o C and 4.0% of the single silanols remains undeuterated at 100 o C. For a higher surface-area silica gel, only 3.0% of the single silanols was not deuterated at 25 o C. In all deuterium-exchanged samples of this study, there is little, if any, evidence of internal geminal silanols
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::37dddf8f7e9d90af2d8e921d4667e51a https://doi.org/10.1021/ja00072a024 Zobrazit plný text záznamu