Results 141 to 150 of about 596 (160)
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Hydrothermal Synthesis and Characterization of Cu-Saponite
Advanced Materials Research, 2013Hydrothermal synthesis of Cu-saponite was achieved using copper nitrate and sodium silicate as the raw materials. The mixtures of starting materials were treated under hydrothermal conditions at 60–230°C for 6–48h. The effect of different synthetic parameters such as hydrothermal temperature and hydrothermal time on the structure development of Cu ...
Xian Mei Xie +4 more
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Calorimetric study of water adsorption on saponite
Colloid Journal, 2012The isotherms and differential heats of water vapor adsorption on Na- and Ca-saponite samples are measured. It is shown that the successive stages of hydration of the internal surface of this mineral appear as waves or inflections in the adsorption isotherms and maxima in the dependences of the differential heat on the adsorption value.
Yu. I. Tarasevich, V. E. Polyakov
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Al-Pillared saponites. Part 1.—IR studies
J. Chem. Soc., Faraday Trans., 1994Al-Pillared saponites have been prepared from natural Na-exchanged Ballarat saponite. Acidic properties of these saponites have been studied by IR spectroscopy using pyridine as a probe molecule. Al-Pillared saponites exhibit both Bronsted and Lewis acidity.
Sophie Chevalier +4 more
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Analyses of a Variety of Saponite
Mineralogical Magazine and Journal of the Mineralogical Society, 1883The variety of saponite described in the following note was first obtained by Mr. Waiter Burns, of the Geological Society of Glasgow, from a quarry in the Cathkin Hills, about three miles S.S.E. of Glasgow, The quarry is hewn out of dark-coloured dolerite, rich in olivine, which restg on beds of felspathic ash. The dolerite has in places been converted
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Optimization of the Pillaring of a Saponite
1992AI-pillared clays thermally stable up to 750°C have been prepared from easily available starting materials: a natural clay, namely the saponite, and a commercial aqueous solution of Chlorhydrol.
S. Chevalier +4 more
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Fe-saponite pillared and impregnated catalysts
Applied Catalysis B: Environmental, 2004C Belver +3 more
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The invention relates to saponite derivatives according to the general formula An+_x/n[(Mg3-yMy)(Si4-xAlx)O10(OH2-z)Fz ] wherein A represents an (alkyl-substituted) ammonium ion and/or any metal having basic or amphoteric properties, M represents a bivalent metal ion having an ionic radius between 0.050 and 0.085 nm, n represents the valence of A, x ...
Breukelaar, J. +2 more
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Breukelaar, J. +2 more
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