Reaction monitoring of cementing materials through multivariate techniques applied to time-resolved synchrotron X-Ray diffraction data

0452611 - ÚTAM 2016 RIV IT eng J - Journal Article
Taris, A. - Grosso, M. - Viani, Alberto - Brundu, M. - Guida, V.
Reaction monitoring of cementing materials through multivariate techniques applied to time-resolved synchrotron X-Ray diffraction data.
Chemical Engineering Transactions. Roč. 43, May (2015), s. 895-900. ISBN 978-88-95608-34-1. ISSN 2283-9216
R&D Projects: GA MŠMT(CZ) LO1219
Keywords : engineering controlled terms * least squares approximations * magnesium powder * multivariant analysis * potassium * reaction intermediates * X ray powder diffraction
Subject RIV: CB - Analytical Chemistry, Separation
http://www.aidic.it/cet/15/43/150.pdf

In this work, the setting reaction of magnesium potassium phosphate ceramic (MKPC) from magnesia (MgO) and potassium di-hydrogen phosphate was investigated by means of in-situ synchrotron X-ray powder diffraction (XRPD). The experimental data were analyzed through multivariate statistical techniques that enabled a real time and reliable understanding of the phenomena occurring in the process. Here, a method combining Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) with Evolving Factor Analysis (EFA) was proposed. Comparison with the conventional methods showed that the compounds involved in the process can be correctly distinguished and the main reaction steps, such as reactants consumption, occurrence of intermediate amorphous phase and MKPC formation can be clearly identified.
Permanent Link: http://hdl.handle.net/11104/0253647