Quantitative XRD Analysis of Advanced Coal Combustion Solid Residuals by the RIR Method
| Autor: | J.K. Solem, M.C. Oseto, G.J. McCarthy, J.A. Bender, J.E. Knell |
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| Rok vydání: | 1992 |
| Předmět: |
Ettringite
Materials science Zincite Analytical chemistry Coal combustion products Corundum 02 engineering and technology General Medicine engineering.material 021001 nanoscience & nanotechnology 010403 inorganic & nuclear chemistry Intensity ratio 01 natural sciences Decomposition 0104 chemical sciences chemistry.chemical_compound chemistry Grind Phase (matter) visual_art engineering visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Advances in X-ray Analysis. 36:343-353 |
| ISSN: | 2631-3626 0376-0308 |
| DOI: | 10.1154/s0376030800018966 |
| Popis: | Reference intensity ratios (RIRs) with zincite (ZnO) as the internal standard have been measured and calculated for key phases in coal combustion solid residuals. Detailed comparisons of measured and calculated corundum RIRs (converted from zincite RIRs), and literature I/Ic values led to the conclusion that for best results, laboratory measured values must be used. Using measured zincite RIRs and standard mixtures of important crystalline phases, a protocol for routine semi-quantitative analysis has been developed. The need to grind under ethanol to minimize decomposition of hydrated phases was demonstrated. An unusual procedure employing mixed peak and integrated intensities in the RIR of one key phase, ettringite (Ca6Al2(SO4)3(OH)12-26H2O), has been adopted for this protocol. |
| Databáze: | OpenAIRE |
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