Results 11 to 20 of about 7,048 (217)

Adsorption of phenol and chlorophenols on pure and modified sepiolite [PDF]

Journal of the Serbian Chemical Society, 2007
In this work, pure sepiolite and sepiolite modified by nitric acid (HNO3), ethylenediaminetetraacetic acid (EDTA) and hexadecyltrimethylammonium (HDTMA) were used ad adsorbents. The changes on the surface were studied by IR spectroscopy.
Yildiz A., Gür A.
doaj   +4 more sources

Zeolite–sepiolite nanoheterostructures [PDF]

Journal of Nanostructure in Chemistry, 2014
Zeolite–sepiolite inorganic nanoheterostructures have been hydrothermally synthesized by adding a dispersion of colloidal sepiolite to a solution able to produce a nanocrystalline zeolite (silicalite). The obtained product could be recovered in good yield by simple filtration only when the relative sepiolite concentration exceeded a threshold of 1.8 wt%
Gómez-Avilés, Almudena, Aranda, Pilar, Ruiz-Hitzky, Eduardo, Camblor, Miguel A., Belver Coldeira, Carolina   +4 more
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Silica-Sepiolite Nanoarchitectures

Journal of Nanoscience and Nanotechnology, 2013
Silica-sepiolite heterostructured materials have been prepared as novel nanoarchitectures by generation of SiO2 nanoparticles (NPs) on the surface of the sepiolite fibrous clay mineral. The synthetic approach implies the use of organo-sepiolites dispersed in isopropanol to which is incorporated a selected silicon alcoxysilane, such as ...
Gomez-Aviles, Almudena, Aranda, Pilar, Fernandes, Francisco M., Belver, Carolina, Ruiz-Hitzky, Eduardo   +4 more
openaire   +4 more sources

Sepiolite and sepiolite-bound humic acid interactions in alkaline media and the mechanism of the formation of sepiolite-humic acid complexes [PDF]

International Journal of Mineral Processing, 2017
The surface-controlled reactions and interfaces of clays and/or clay minerals are strongly determined by the adsorption of dissolved humic substances which have surface active characters. Consequently, this may lead to an improved understanding of organo-clay complexes for remediation purposes of polluted areas.
Sabah, E, Ouki, Sabeha
core   +8 more sources

PVB/sepiolite nanocomposites as reinforcement agents for paper [PDF]

Journal of the Serbian Chemical Society, 2016
In order to improve the mechanical properties of paper, 1, 3 and 5 wt.% of sepiolite were dispersed in a poly(vinyl butyral) (PVB) matrix and coated onto the surface of schrenz (110 g m-2).
Janković-Častvan Ivona, Lazarević Slavica, Stojanović Dušica, Živković Predrag, Petrović Rada, Janaćković Đorđe   +5 more
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SYNTHESIS AND APPLICATIONS OF METAL/SEPIOLITE AND METAL OXIDE/SEPIOLITE NANOCOMPOSITES

, 2020
In the United States, the Amargosa Valley of Nevada has the exclusively exploitable and commercial deposit of sepiolite. However, the current sepiolite products are mainly low-value products.
Wang, Huaguang, Huaguang Wang
openaire   +2 more sources

Improvement of Nafion®-sepiolite composite membranes for PEMFC with sulfo-fluorinated sepiolite [PDF]

Journal of Membrane Science, 2015
A new composite membrane based on Nafion® loaded with sulfo-fluorinated sepiolite was prepared, characterized and tested in a membrane electrode assembly in fuel cell operating conditions. Pristine sepiolite, a natural microfibrous and highly hygroscopic clay, was first modified so as to make it proton conductive on one hand and to increase ...
Beauger, Christian, Lainé, Guillaume, Burr, Alain, Taguet, Aurélie, Otazaghine, Belkacem   +4 more
openaire   +4 more sources

Adsorption of Nitrate Ions onto Sepiolite and Surfactant-Modified Sepiolite

Adsorption Science & Technology, 2005
The adsorption of nitrate ions onto clay minerals has not been given much attention, possibly because clay surfaces are negatively charged. In order to increase the positive charge on the surface, sepiolite was modified in the present studies by ...
Adnan Özcan, Mutlu Şahin, Asiye Safa Özcan   +2 more
doaj   +5 more sources

On the Chemical Composition of Sepiolite and Palygorskite [PDF]

Clays and Clay Minerals, 2010
Abstract Many studies of the chemical composition of sepiolite and palygorskite have been carried out using analytical electron microscopy (AEM). According to the literature, a compositional gap exists between sepiolites and palygorskites, but the results presented here show that they may all be intermediate compositions between two ...
García Romero, Emilia, Súarez Barrios, Mercedes   +1 more
openaire   +6 more sources

Competition Between Protein and DNA for Binding to Natural Sepiolite Nanofibers [PDF]

International Journal of Nanomedicine
David Adame Brooks,1,2 Olivier Piétrement,3 Elodie Dardillac,1 Fidel Antonio Castro Smirnov,4 Pilar Aranda,5 Eduardo Ruiz-Hitzky,5 Bernard S Lopez1 1Université de Paris Cité, INSERM U1016, UMR 8104 CNRS, Institut Cochin, Paris, France; 2Centro de ...
Adame Brooks D, Piétrement O, Dardillac E, Castro Smirnov FA, Aranda P, Ruiz-Hitzky E, Lopez BS   +6 more
doaj   +2 more sources