Results 111 to 120 of about 334 (140)
Elucidating the Crystal-Chemistry of Jbel Rhassoul Stevensite (Morocco) by Advanced Analytical Techniques [PDF]
Clay Minerals, 2008 The composition of Rhassoul clay is controversial regarding the nature of the puremineral clay fraction which is claimed to be stevensite rather than saponite.
Lahcen Daoudi, Francis Maury, F Senocq
exaly +2 more sources
Photocatalytic Activity of TiO2/Stevensite Nanocomposites for the Removal of Orange G From Aqueous Solutions [PDF]
Clay Minerals, 2014 TiO2/stevensite nanocomposite photocatalysts were synthesized by a solvothermal method using TiCl3/HCl as reactants and the stevensite clay mineral extract as support.
Francis Maury, Amane Jada, F Senocq
exaly +2 more sources
Some of the next articles are maybe not open access.
Adsorption of Metal Ions Onto Moroccan Stevensite: Kinetic and Isotherm Studies
Journal of Colloid and Interface Science, 2005The aim of this paper is to study the adsorption of the heavy metals (Cd(II), Cu(II), Mn(II), Pb(II), and Zn(II)) from aqueous solutions by a natural Moroccan stevensite called locally rhassoul. We carried out, first, a mineralogical and physicochemical characterization of stevensite.
A Benhammou
exaly +4 more sources
Synthesis and characterization of pillared stevensites: application to chromate adsorption
Environmental Technology, 2011The purpose of this work was to study the synthesis of pillared interlayered clays from Moroccan stevensite called locally 'Ghassoul'. This clay has been intercalated with cetyltrimethylammonium surfactant (CTA-Stv) and aluminium hydroxypolycation (Al13-Stv). Characterization studies were performed using XRF, XRD, FTIR and DTA/TG analysis.
A, Benhammou +4 more
openaire +2 more sources
Clays and Clay Minerals, 1979
Abstract Hydrothermal reactions in the system sepiolite/H 2 O have been examined between 149° and 316°C. Approximately 10–20% of the starting sepiolite was converted to a smectite (stevensite) at 204°C within
Necip Güven
exaly +2 more sources
Abstract Hydrothermal reactions in the system sepiolite/H 2 O have been examined between 149° and 316°C. Approximately 10–20% of the starting sepiolite was converted to a smectite (stevensite) at 204°C within
Necip Güven
exaly +2 more sources
Stevensite and Talc—Hydrothermal Alteration Products of Wollastonite
Clays and clay minerals (National Conference on Clays and Clay Minerals), 1962AbstractMagnesium-bearing hydrothermal solutions moving along channelways created by faulting in the Willsboro, New York, wollastonite deposit have effected the conversion of wollastonite to layer-lattice silicates. Alteration products sheath faults in wollastonite and may be divided into three gradational but regular zones: (1) least altered (fresh ...
Ronald D. DeRudder, Carl W. Beck
openaire +1 more source
Interaction of stevensite with Cd2+ and Pb2+ in aqueous dispersions
Applied Clay Science, 2007The experimental process of adsorption of Pb(II) and Cd(II) onto clay mineral is studied here in order to evaluate the capacity for removal for these two heavy metal ions. This study is performed under various conditions such as initial solution pH, chemical clay modification conditions, initial metal ion concentration and contact time.
Y. El Mouzdahir +6 more
openaire +1 more source
The nature of kerolite, its relation to talc and stevensite
Mineralogical Magazine, 1977SummaryKerolites from Goles Mountain (Yugoslavia), Wiry (Poland), Madison Co. (North Carolina), and Kremze (Czechoslovakia) are compared with talc and stevensite. Chemical analyses give a composition for kerolite near R3Si4O10(OH)2.nH2O with R mainly Mg and n about 0·8–1·2.
G. W. Brindley +2 more
openaire +1 more source
Synthesis and Characterization of Cordierite Ceramic From Moroccan Stevensite and Andalusite
Applied Clay Science, 2010Abstract Cordierite (2MgO−2Al2O3− 5SiO2) is currently an attractive ceramic material for various applications. This study describes the production of cordierite ceramic by mixing Moroccan abundant raw materials: andalusite (source of Al2O3 and SiO2) and “Ghassoul” clay (source of MgO and SiO2). The clay consists mainly of stevensite.
Abdelaziz Ammar, A Benhammou
exaly +2 more sources
Li-Bearing Stevensite from Moldova Nouǎ, Romania
Clays and Clay Minerals, 1990AbstractLi-bearing smectite minerals occurring as hydrothermal alteration products of magnesium silicate minerals in skarns associated with the Moldova Nouǎ, Romania, porphyry copper deposit were examined by X-ray powder diffraction, infrared spectroscopy, and thermal and chemical analyses.
Virgil Ianovici +2 more
openaire +1 more source