New insight into the phase transformation of sepiolite upon alkali activation: Impact on composition, structure, texture, and catalytic/sorptive properties
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DOI: 10.1016/j.clay.2020.105740
Abstract: Abstract Wet NaOH activation of natural sepiolite was studied for the purpose of endowing the material with enhanced basicity for potential catalytic/sorptive applications. A series of synthesized solids were characterized with X-ray powder diffraction (XRD),… read more here.
Keywords: catalytic sorptive; phase transformation; sepiolite; spectroscopy ... See more keywords
Novel fabrication of a sepiolite supported cobalt-based catalyst via a coprecipitation-reduction method
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DOI: 10.1016/j.clay.2020.105909
Abstract: Abstract In this work, a novel supported cobalt-based catalyst Co-CoAl2O4/sepiolite was successfully prepared via a coprecipitation-reduction method. The nanocomposites were examined by various surface characterization techniques to explore the optimal preparation conditions which were found… read more here.
Keywords: reduction; cobalt based; cobalt; sepiolite ... See more keywords
A rate law for sepiolite growth at ambient temperatures and its implications for early lacustrine diagenesis
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DOI: 10.1016/j.gca.2020.08.014
Abstract: Abstract The magnesium silicate mineral sepiolite is an important component of both alkaline lake and siliceous marine sediments. However, apart from historical constraints on its equilibrium solubility and effective solubility in surface waters, little is… read more here.
Keywords: pore waters; rate law; sepiolite; rate ... See more keywords
Removal of iron from industrial lean methyldiethanolamine solvent by adsorption on sepiolite
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DOI: 10.1080/01496395.2017.1395462
Abstract: ABSTRACT Sepiolite clay was used as an adsorbent for the removal of iron ions from industrial methyldiethanolamine (MDEA) solvent. The raw sepiolite clay was modified by different chemical and thermal treatments, and was characterized by… read more here.
Keywords: adsorption; removal iron; methyldiethanolamine; sepiolite ... See more keywords