Results 11 to 20 of about 334 (140)
Hydration of Na-saturated synthetic stevensite, a peculiar trioctahedral smectite [PDF]
Clay Minerals, 2020 AbstractSmectite interlayer water plays a key role in the mobility of elements and molecules and affects a variety of geological processes. In trioctahedral smectites, in contrast to saponite and hectorite, the layer charge of which originates from isomorphic substitutions, the stevensite layer charge originates from the presence of octahedral ...
Vinci, Doriana +4 more
openaire +3 more sources
Comparative adsorption of tetracyclines on biochars and stevensite: Looking for the most effective adsorbent [PDF]
Applied Clay Science, 2018 This work has been economically supported by Ministry of Economy and Competitiveness of Spain ( AGL2016-78490-R and CTM2013-47874-C2-2-R ). CGD was supported by a postdoctoral contract ( Juan de la Cierva - Formación FJCI-2015-23543 ) from the Spanish Ministry of Economy and Competitiveness.
Rafael Antón-Herrero +5 more
core +5 more sources
Clays and Clay Minerals, 2020 AbstractÇayırbağı magnesite is one of numerous magnesite deposits occurring throughout Turkey. In this deposit, sepiolite and newly found stevensite occur locally as two daughter minerals formed from magnesite. The sepiolite and stevensite show distinctive compositions and modes of formation compared to those described in the literature.
Yeniyol, Mefail, Mefail Yeniyol
openaire +2 more sources
Organophilic Synthetic Stevensite-Zn: Synthesis and Characterization, an Alternative Simple Method
Minerals, 2022 Organophilic clays are used as components in petroleum fluids, lubricants, paints, adhesives, cosmetics, and others. This requires products that are increasingly pure with homogeneous properties, which are hardly found in natural clays. Synthetic clays can thus be a solution. For this, it is necessary to explore techniques for their production.
Thamyres Carvalho +4 more
openaire +2 more sources
Electrokinetic and ionic dyes adsorption studies of Moroccan stevensite Jbel Rhassoul clay [PDF]
, 2011 This study aims at establishing correlation between the nature of electrical charge of morocan stevensite Jbel Rhassoul clay particles and ionic dyes adsorption phenomenon. The electrical charges of the clay mineral particles were assessed by measuring zeta potential (z) using micro electrophoresis technique.
Bouna, Lahcen +6 more
core +8 more sources
Transformation of Synthetic Zn-Stevensite to Zn-Talc Induced by the Hofmann-Klemen Effect [PDF]
Clays and Clay Minerals, 2008 AbstractStevensite-like sauconite, with the general composition: Si4(Zn3−x□x)O10(OH)2R2x+\$\end{document}, where □ is a vacant site, was synthesized. The objective was to study the possible migration of some cations (Li+ and Zn2+) within such trioctahedral smectites, under heating, following the so-called ‘Hofmann-Klemen’ (HK) effect.
Petit, S., Righi, D., Decarreau, Alain
openaire +3 more sources
, 2000 The stevensite-like materials containing Mg, Mg-Ni, and Mg-Co in the octahedral sheets were synthesized under non-hydrothermal conditions. The nature of divalent octahedral cations influences the surface area and pore volume of these materials. The thiophene HDS activities of stevensite-supported catalysts prepared by addition of Mo or W to the Ni ...
Sychev, M.V. +5 more
openaire +2 more sources
Adsorption capacity of sodic- and dendrimers-modified stevensite
Clay Minerals, 2018 ABSTRACTThe adsorption capacities of nano-sized organoclays composed of a stevensite-rich clay (R), phosphorus dendrimers (GC1 and GC2) and Na+-saturated clay were evaluated for their capacity to adsorb chromate and methylene blue (MB) in the range of 298–318 K.
Hajjaji, Mohamed +4 more
openaire +2 more sources
Electrochemical Kinetics and Detection of Paracetamol by Stevensite-Modified Carbon Paste Electrode in Biological Fluids and Pharmaceutical Formulations. [PDF]
Int J Mol Sci, 2023 Paracetamol (PCT), or acetaminophen, is an important drug used worldwide for various clinical purposes. However, the excessive or indiscriminate use of PCT can provoke liver and kidney dysfunction; hence, it is essential to determine the amount of this ...
Gharous M +5 more
europepmc +2 more sources
Environmental Technology & InnovationThe persistent appearance of antibiotic residues in the aquatic ecosystem is considered an issue of great concern. This study examined the adsorptive efficiency of a novel bionanocomposite (L-methionine/stevensite, MET/ST) for promising decontamination of nine antibiotics.
Gharous, Moaad +7 more
openaire +3 more sources