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CONTRIBUTION TO THE STUDY OF SEPIOLITE:III.THE DEHYDRATION PROCESS AND THE TYPES OF WATER MOLECULES
SEPIOLITE TYPES OF WATER MOLECULES DEHYDRATION PROCESS
2011/11/15
A detailed study has been made of the dehydration of sepiolite. This work, together with other studies of dehydration in vacuo and over phosphoric anhydride, rehydration of samples heated to various t...
A RANDOM INTERGROWTH OF SEPIOLITE AND ATTAPULGITE
SEPIOLITE ATTAPULGITE RANDOM INTERGROWTH
2011/11/15
The smectic clays from Cabo de Gata region, Almeria, Spain, are composed mainly of montmorillonite, but they contain appreciable quantities of fibrous clay minerals, some of which are of the palygorsk...
Hydrothermal studies have failed to yield synthetic attapulgite or sepiolites in the system MgO-AI~O3-SiOr-H~O. However, the natural minerals can be decomposed to yield montmorillonoids by mild hydrot...
Effects of Sepiolite Usage in Broiler Diets on Performance, Carcass Traits and Some Blood Parameters
Blood parameters Broiler Performance Carcass traits Sepiolite
2011/11/8
This study was carried out to determine the effects of dietary sepiolite on performance, carcass traits and some blood parameters of broilers. A total of 204 daily Ross 308 female broiler chicks were ...
Controlled Rate Thermal analysis of sepiolite
attapulgite sepiolite palygorskites thermal analysis CRTA thermogravimetry
2011/11/8
CRTA technology offers better resolution and a more detailed interpretation of the decomposition processes of a clay mineral such as sepiolite via approaching
equilibrium conditions of decomposition ...
PALYGORSKITE, SEPIOLITE, AND OTHER CLAY MINERALS IN LEG 41 OCEANIC SEDIMENTS: MINERALOGY, FACIES, AND GENESIS
PALYGORSKITE SEPIOLITE OTHER CLAY MINERALS
2011/11/4
Leg 41 holes, drilled near the northwest margin of Africa, penetrated Mesozoic and Cenozoic sediments.The ion of these sediments contains
montmorillonite, kaolinite, hydromica, chlorite, m...
Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of sepiolite and palygorskite
X-ray diffraction sepiolite palygorskite
2011/11/4
Real-time, temperature-resolved synchrotron powder X-ray diffraction data and Rietveld refinements provide unprecedented insights into mineral behaviors and mechanisms of crystal structure transformat...
ON THE CHEMICAL COMPOSITION OF SEPIOLITE AND PALYGORSKITE
Chemical Composition Octahedral Sheet Octahedra cations Palygorskite Sepiolite
2011/11/4
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...
Preparation and Photocatalytic Activity of N-TiO2/Sepiolite Nanocomposite
Methylene Blue Modification Photocatalyst Speiolite Titanium Dioxide
2011/11/22
To utilize visible light and separate of TiO2 nanoparticles more efficiently in photocatalytic reactions, nitrogen doped TiO2/sepiolite composites (N-TiO2/sep) with different nitrogen contents were pr...
Preparation and Characterization of N Doped TiO2/ Sepiolite Composite Materials
Modification Photocatalytic Speiolite Titanium Dioxide
2011/11/22
Nitrogen doped TiO2/sepiolite composite materials (N-TiO2/sep) with different nitrogen contents were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron micros...
Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction
sepiolite indigo Maya Blue pigment molecular mechanics Rietveld method
2011/11/7
Maya Blue is an artificial pigment used in Pre-Columbian America, renowned for its chemical stability. The pigment can be considered a precursor of modern inclusion compounds as a hosting microporous ...
Trioctahedral entities in palygorskite: Near-infrared evidence for sepiolite-palygorskite polysomatism
palygorskite sepiolite XRD near-infrared spectroscopy dioctahedral trioctahedral polysomatism
2011/11/4
The mixed dioctahedral-trioctahedral character of Mg-rich palygorskite has been previously described by the formula
yMg5Si8O20(OH)2(OH2)4(1杫)[xMg2Fe2(1杧)Mg2Al2]Si8O20(OH)2(OH2)4, where y is the tri...
Spectroscopic characterization of a sepiolite-based Maya Blue pigment
Maya Blue sepiolite indigo spectroscopy host/guest interaction
2011/11/7
Maya blue, an ancient pigment used by Mayas in Mesoamerica, can be considered an ancestor of modern nano-composites as it forms by grinding and heating the guest indigo molecule with a hosting clay fr...
Micromorphology investigation of sepiolite bearing petrocalcic horizons formed from lacustrine sediments on the southern high planes of Texas and New Mexico
micromorphology investigation petrocalcic horizons lacustrine sediments
2011/11/8
The presence of sepiolite in soils has long been thought to have been attributed to inheritance from alternative parent material via secondary (eolian, alluvial) depositional processes due to sepiolit...
Desferrioxamine-B adsorption to and iron dissolution from palygorskite and sepiolite
DFOB Siderophore Fibrous clays Weathering Kinetic Isotherm
2011/11/4
Dissolution weathering of minerals can be greatly affected by the presence of siderophores and their adsorption in soil environments. In this research, adsorption equilibria and kinetics of desferriox...