Browsing by Author "Yeates, D."
Now showing items 1-5 of 5
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Changes in the surface properties of calcium hydroxide upon ageing A spectroscopic and gas sorption study
Theocharis, Charis R.; Yeates, D. (1991)The surface chemistry of commercial grade calcium hydroxide was studied by sorption methods, thermal analysis and spectroscopy. In this paper, the effect of exposure to the atmosphere (moisture and carbon dioxide) upon the ...
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Control of the morphology of crystalline calcium hydroxide
Theocharis, Charis R.; Pashalidis, Ioannis; Jordan, Stephanie L.; Gray, A. C.; Yeates, D. (2001)The reaction of solid calcium hydroxide with liquid or gaseous methanol, ethanol and toluene, and the effect this has on the surface properties of the solid was examined, as well as the modification of crystal habit by the ...
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Article
Induction of mesoporosity in ALPO-5. Treatment with silicon tetrachloride
Theocharis, Charis R.; Gelsthorpe, M. R.; Yeates, D. (1989)Reaction of microporous AlPO4 (ALPO-5) with SiCl4 vapour in a nitrogen atmosphere at 870 K results in the partial isomorphous substitution of P predominantly by Si. The product has fewer but stronger acid sites than the ...
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Investigation of infrared absorption spectra of copper phosphate glasses containing some rare earth oxides
Ananthamohan, C.; Hogarth, C. A.; Theocharis, Charis R.; Yeates, D. (1990)The spectra of copper-lutetium-phosphate and copper-erbium-phosphate glasses have been studied within the spectral range 4000 to 400 cm- by Fourier transform infrared spectroscopy. Incorporation of a small amount of lutetium ...
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Article
Sorption of water vapour by partially decomposed calcium hydroxide
Sing, K. S. W.; Theocharis, Charis R.; Yeates, D. (1991)Abstract The surface chemistry of commercial grade calcium hydroxide was studied by sorption methods, thermal analysis and spectroscopy. Part of this investigation was the study of the sorption of water vapour by the ...