View : 40 Download: 0

B-11 nutation NMR study of powdered borosilicates

Title
B-11 nutation NMR study of powdered borosilicates
Authors
Woo, AJHan, DYYang, KH
Ewha Authors
우애자
SCOPUS Author ID
우애자scopus
Issue Date
1998
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
ISSN
0253-2964JCR Link
Citation
vol. 19, no. 5, pp. 519 - 524
Publisher
KOREAN CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
In this work, we applied the 1D B-11 nutation NMR method for the analysis of the local structural environments in powdered borosilicates (SiO2-B2O3). Spin dynamics during a rf irradiation for spin I=3/2 was analytically calculated with a density matrix formalism. Spectral simulation programs were written in MATLAB on a PC. Two borosilicates prepared by the sol-gel process at different stabilization temperature were used for the 1D B-11 nutation NMR experiment. The B-11 NMR parameters, quadrupole coupling constants (e(2)qQ/h) and asymmetry parameters (eta), for each borosilicate were extracted from the nonlinear least-squares fitting. The effects of heat treatments on the local structures of boron sites in borosilicates were discussed.
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE