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Raman spectroscopy and multivariate curve resolution of concentrated Al 2 O 3 –Na 2 O–H 2 O solutions
Author(s) -
Schoonover Jon R.,
Zhang Shuliang L.,
Johnston Cliff T.
Publication year - 2003
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1011
Subject(s) - raman spectroscopy , aluminate , analytical chemistry (journal) , chemistry , sodium aluminate , hydroxide , monomer , relative humidity , resolution (logic) , mineralogy , inorganic chemistry , materials science , chromatography , thermodynamics , polymer , cement , organic chemistry , aluminium , physics , artificial intelligence , computer science , optics , metallurgy
Multivariate curve resolution was applied to a series of Raman spectra for samples representing highly concentrated alkaline aluminate slurries. Factors are extracted that represent the behavior of the dominant chemical species present, including aluminate monomer, aluminate oligomers, water and hydroxide. The analysis is particularly useful in unraveling the numerous overlapping contributions in the ν(OH) region of the spectrum. These extracted factors were further examined by comparing their scores with measured physiochemical properties such as density, relative humidity and molar concentrations of components, weight fractions and water activity. Published in 2003 by John Wiley & Sons, Ltd..