Published March 2008
| Version v1
Journal article
γ radiolyzed amorphous silica: A study with 29Si CP-MAS NMR spectroscopy
- 1. Lupi Chemical Research Institute, Via Casilina 1626/A, 00133 Rome (Italy)
- 2. CNR, Institute of Chemical Metodologies, Area della Ricerca di Roma 1, 00016 Monterotondo Scalo, Rome (Italy)
Description
Precipitated amorphous silica has been γ radiolyzed at 333, 666 and 1000 kGy in air. The structural changes undergone during irradiation have been studied by 29Si CP-MAS NMR spectroscopy. The spectra suggest that silica looses the hydrogen atoms attached to the silanol groups and the resulting silanol radicals undergo a crosslinking reaction by forming peroxysiloxane groups or by reacting with E' centres yielding siloxane groups
Availability note (English)
Available from http://dx.doi.org/10.1016/j.radphyschem.2007.05.010Additional details
Identifiers
- DOI
- 10.1016/j.radphyschem.2007.05.010;
- PII
- S0969-806X(07)00269-1;
Publishing Information
- Journal Title
- Radiation Physics and Chemistry (1993)
- Journal Volume
- 77
- Journal Issue
- 3
- Journal Page Range
- p. 267-272
- ISSN
- 0969-806X
- CODEN
- RPCHDM
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39067831
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- CROSS-LINKING; E CENTERS; IRRADIATION; NUCLEAR MAGNETIC RESONANCE; RADICALS; RADIOLYSIS; SILICA; SILICON 29; SPECTRA; SPECTROSCOPY
- Descriptors DEC
- CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; COLOR CENTERS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; DECOMPOSITION; EVEN-ODD NUCLEI; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; MINERALS; NUCLEI; OXIDE MINERALS; POINT DEFECTS; POLYMERIZATION; RADIATION EFFECTS; RESONANCE; SILICON ISOTOPES; STABLE ISOTOPES; VACANCIES
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.