Results 51 to 60 of about 334 (140)

Thermal behaviour of stevensite at temperatures up to 800°C. [PDF]

open access: yes, 2013
Ο στιβενσίτης είναι μαγνησιούχος τριοκταεδρικός σμεκτίτης με φορτίο κρυσταλλικής δομής που προέρχεται από κενές οκταεδρικές θέσεις. Στην παρούσα εργασία μελετήθηκε η θερμική συμπεριφορά ενός καθαρού στιβενσίτη (χωρίς φύλλα τάλκη) από το Μαρόκο, γνωστού ...
Koutsopoulou, E., Christidis, G. E.
core  

Self- diffusion of H2O in stevensite gel: effects of temperature and clay fraction

open access: yes, 2002
Self-diffusion coefficients of water molecules (1H2O) in Na-stevensite gel were measured by pulsed-gradient spin-echo (PGSE) proton nuclear magnetic resonance (NMR). The effects of clay fraction (0.00 37.7 wt.%) and temperature (20.0 60.3°C) were studied.
Y. Nakashima
core   +1 more source

Hybrid carbonaceous adsorbents based on clay and cellulose for cadmium recovery from aqueous solution. [PDF]

open access: yesRSC Adv, 2023
Azaryouh L   +6 more
europepmc   +1 more source

A simple approach to the identification of trioctahedral smectites by X-ray diffraction

open access: yes, 2013
Summarization: A new method for identifying the trioctahedral smectites saponite, stevensite and hectorite is proposed in this study. The method is based on differences in the X-ray diffraction (XRD) patterns of the three smectites after (a) heating at ...
Χρηστιδης Γεωργιος(http://users.isc.tuc.gr/~gchristidis)   +2 more
core   +1 more source

Mineralogical and physicochemical characterization of the Jbel Rhassoul clay deposit (Moulouya Plain, Morocco) [PDF]

open access: yes, 2018
peer reviewedThis study aims at the mineralogical and physicochemical characterization of clays of the Missour region (Boulemane Province, Morocco). For this, three samples were collected in the Ghassoul deposit.
El Halim, Mouhssin   +6 more
core   +1 more source

Geochemical Variations of Kerolite, Stevensite, and Saponite from the Pre-Salt Sag Interval of the Santos Basin: An Approach Using Electron Probe Microanalysis

open access: yes
This study investigates the mineralogy and chemical characteristics of pre-salt clay minerals, classifies them, and defines assemblages in reactive microsites.
Lucas Bonan Gomes   +9 more
core   +1 more source

Hydrothermal treatment of okenite. Experimental studies on the genesis of stevensite (Part 5).

open access: yesJournal of the Mineralogical Society of Japan, 1990
In order to investigate the genesis of stevensite experimentally, naturally occurring okenite was treated hydrothermally with 0.5 mol/l magnesium chloride solution and with basic magnesium carbonate for Mg (in basic magnesium carbonate)/Si (in okenite) molecular ratios ranging from 0.1 to 1.5.
openaire   +3 more sources

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