0000000001088836

AUTHOR

N. Burriesci

showing 2 related works from this author

Physico-chemical characterization of perlite of various origins

1985

Abstract Pearlstones (perlite) from Sardinia (Italy). Milos (Greece) and Siberia (USSR) have been evaluated in terms of chemical composition, phase analysis, iron distribution, morphology and thermal properties, for application as raw material in zeolite synthesis.

Materials scienceMechanical EngineeringMetallurgyMineralogyRaw materialCondensed Matter PhysicsCharacterization (materials science)Mechanics of MaterialsPerliteGeneral Materials ScienceMossbauer spectraPhase analysisZeoliteChemical compositionMaterials Letters
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Hydrothermal synthesis of zeolites from rhyolitic pumice of different geological origins

1983

Abstract Twelve samples of rhyolitic pumice from widely different origins were subjected to zeolitization in standard hydrothermal conditions (solid/liquid ratio, 1 5 ; T , 95°C; reaction time, 5 h; alkaline solution 5 N NaOH). The Si Al ratio of the starting material was of special importance in that zeolites formed with Si Al ratios similar to or smaller than that of the parent material. Pumice with low SiO 2 Al 2 O 3 , and high Fe content, preferentially gave rise to zeolites with lower SiO 2 Al 2 O 3 ratio than in the case of lower Fe and higher SiO 2 Al 2 O 3 ratio.

Liquid ratioMaterials sciencegenetic structuresMechanical EngineeringMineralogyFe contentCondensed Matter PhysicsHydrothermal circulationChemical engineeringMechanics of MaterialsPumiceRhyoliteHydrothermal synthesisGeneral Materials Science
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