Browsing by Subject "Calcite"
Now showing items 1-9 of 9
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Article
Absorption-enhanced reforming of phenol by steam over supported Fe catalysts
(2006)Supported Fe catalysts of varying support chemical composition prepared by sol-gel and incipient wetness impregnation methods were studied for the steam reforming of phenol (one of the main constituents of tar produced ...
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Article
The Beginnings of Pyrotechnology in Cyprus
(2012)In Cyprus, lime and gypsum mortars have been used since the earliest periods of antiquity, alongside mud mortars, constituting primarily plaster coatings. Although the production of lime and gypsum seems to have been known ...
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Article
A comparative study of the steam reforming of phenol towards H2 production over natural calcite, dolomite and olivine materials
(2010)Pre-calcined (air, 850 °C) naturally occurring calcite, dolomite and olivine materials were studied for phenol steam reforming towards H2 production. The effect of reaction temperature, feed volume flow rate, and hydrogen ...
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Determination of uranium in calcareous rocks/minerals after separation by nitrilotriacetic-mediated sample dissolution and cation-exchange
(Springer, 2023)Τhe determination of uranium in calcareous samples has been investigated by means of alpha-spectroscopy after dissolution of the samples by nitrilotriacetic solution (NTA) and uranium separation by cation-exchange. Method ...
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Article
On the role of organic adlayers in the anomalous water sorptivity of Lépine limestone
(2004)Sorptivity data are reported for the capillary absorption of water, ethanol, propan-2-ol, and n-heptane by the calcitic limestone Lépine (Lavoux à grain). The data confirm that the water sorptivity is anomalously low, an ...
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Article
The phenol steam reforming reaction towards H2 production on natural calcite
(2009)The steam reforming of phenol towards H2 production was studied in the 650-800 °C range over a natural pre-calcined (air, 850 °C) calcite material. The effects of reaction temperature, water, hydrogen, and carbon dioxide ...
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Article
Radon emanation from phosphogypsum and related mineral samples in Cyprus
(2007)Radon emanation rates from phosphogypsum samples have been determined to assess the radiological impact of radon emanated from a phosphogypsum disposal site. For comparison corresponding measurements were conducted with ...
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Article
The role of humic substances in the formation of marble patinas under soil burial conditions
(2009)The present work aim to study the effect of burial on the photoluminescnece (PL) spectra of white, crystalline marble surfaces and the physicochemical processes that take place at the marble-soil interface. The PL was ...
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Article
The steam reforming of phenol over natural calcite materials
(2009)Five natural calcite materials of different geographical origin were studied towards the steam reforming of phenol reaction and the activity results obtained were correlated with some of their physico-chemical properties. ...