Results 21 to 30 of about 2,274 (216)

Cation Exchange in Smectites as a New Approach to Mineral Carbonation

open access: yesFrontiers in Climate, 2022
Mineral carbonation of alkaline mine residues is a carbon dioxide removal (CDR) strategy that can be employed by the mining industry. Here, we describe the mineralogy and reactivity of processed kimberlites and kimberlite ore from Venetia (South Africa ...
Nina Zeyen   +14 more
doaj   +1 more source

Potential of Cu–saponite catalysts for soot combustion [PDF]

open access: yes, 2016
H– and Na–saponite supports have been prepared by several synthesis approaches. 5% Cu/saponite catalysts have been prepared and tested for soot combustion in a NOx + O2 + N2 gas flow and with soot and catalyst mixed in loose contact mode.
Salagre Carnero, Pilar   +5 more
core   +1 more source

The evolution of saponite: An experimental study based on crystal chemistry and crystal growth

open access: yes, 2021
Element incorporation and partitioning during the evolution of clay minerals have significant implications for element cycling in geochemical processes. The main aim of this experimental study is to further our understanding of element redistribution and
Zhu, Jianxi   +9 more
core   +1 more source

Structural, Mineral and Elemental Composition Features of Iron-Rich Saponite Clay from Tashkiv Deposit (Ukraine)

open access: yesColloids and Interfaces, 2019
Low-temperature nitrogen adsorption–desorption isotherms, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, as well as infrared spectroscopy were used to characterize structural features of raw and acid-treated ...
Halyna Sokol   +4 more
doaj   +1 more source

Spectroscopic Studies of Synthetic and Natural Saponites: A Review [PDF]

open access: yesMinerals, 2020
Saponite is a trioctahedral 2:1 smectite with the ideal composition MxMg3AlxSi4-xO10(OH,F)2.nH2O (M = interlayer cation). Both the success of the saponite synthesis and the determination of its applications depends on robust knowledge of the structure and composition of saponite.
J. Theo Kloprogge, Concepcion P. Ponce
openaire   +3 more sources

Production of magnesium chlorides by conversion method by thermal treatment of local saponite mineral [PDF]

open access: yesE3S Web of Conferences
Scientists of Navoi State Mining and Technological University by chemical and modern physico-chemical methods of analysis established the presence of saponite mineral in the composition of dolomite mineral of Vaush deposit, located in Navbahor district ...
Pirnazarov Feruz   +2 more
doaj   +1 more source

Impregnation of Synthetic Saponites with Aldehydes: A Green Approach in the Intercalation of Bioactive Principles

open access: yesInorganics, 2022
Synthetic saponite clay was impregnated with either linear saturated or unsaturated aldehydes through an incipient-wetness deposition approach.
Stefano Marchesi   +5 more
doaj   +1 more source

Urea-Assisted Synthesis and Characterization of Saponite with Different Octahedral (Mg, Zn, Ni, Co) and Tetrahedral Metals (Al, Ga, B), a Review

open access: yesLife, 2020
Clay minerals surfaces potentially play a role in prebiotic synthesis through adsorption of organic monomers that give rise to highly concentrated systems; facilitate condensation and polymerization reactions, protection of early biomolecules from ...
Concepcion P. Ponce, J. Theo Kloprogge
doaj   +1 more source

Phase Change Materials (PCMs) Based in Paraffin/Synthetic Saponite Used as Heat Storage Composites

open access: yesEnergies, 2021
Synthetic saponites were successfully used to prepare phase change materials (PCMs) based on paraffin/synthetic saponite. Paraffin/synthetic saponites PCMs were prepared by a solution intercalation process.
Raquel Trujillano   +2 more
doaj   +1 more source

Chitosan Immobilized on Saponite Surface in Extraction of V(V), Mo(VI) and Cr(VI) oxoanions

open access: yesХімія, фізика та технологія поверхні, 2014
Chitosan-saponite composite has been obtained by crosslinking of adsorbed on saponite surface biopolymer with glutaraldehyde. The structure of composite was studied by IR-spectroscopy, concentration of immobilized chitosan was estimated using ...
T. M. Budnyak   +2 more
doaj   +1 more source

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