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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...
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...
Spectroscopic study of the dehydration and/or dehydroxylation of phyllosilicate and zeolite minerals
phyllosilicate zeolite minerals spectroscopic
2011/11/8
Phyllosilicates on Mars mapped by infrared spectroscopic techniques could have been affected by dehydration and/or dehydroxylation associated with chemical weathering in hyperarid conditions, volcanis...
Thermal dehydration of CeP3O9·3H2O by controlled rate thermal analysis
activation energy cerium phosphate controlled rate thermal analysis TG-DTA
2011/11/10
Abstract The aim of this work is to highlight the importance of controlling the residual water vapour pressure above the sample as well as the rate of the thermal decomposition during the thermal deh...
Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of palygorskite
Palygorskite Rietveld synchrotron X-ray diffraction time-resolved
2011/11/7
Rietveld refinements using synchrotron powder X-ray diffraction data were used to study the crystal structure and dehydration behavior of pure monoclinic palygorskite samples from Korea and Alaska. Th...
Experimental determination of CO2-H2O activity-composition relations at 600-1000 °C and 6-14 kbar by reversed decarbonation and dehydration reactions
CO2-H2O activity-composition relations reversed decarbonation dehydration reaction modified Redlich-Kwong
2012/4/1
Activity-composition relations in CO -H O solutions were determined at 6, 10, abroad temperature-fluid composition ranges from 70 reversed determinations of three simple-systemdecarbonation and dehydr...
Distinguishing between Surface and Bulk Dehydration-Dehydroxylation Reactions in Synthetic Goethites by High-Resolution Thermogravimetric Analysis
Crystallinity Dehydroxylation Goethite Thermogravimetry Nonstoichiometric Water TEM XRD
2011/12/7
Abstract: Synthetic goethites studied by high-resolution thermogravimetry (HRTGA) show variability in surface characteristics and structural stability as a function of aging conditions. Goethites were...
Dehydration dynamics of analcime by in situ synchrotron powder diffraction
Dehydration dynamics of analcime powder diffraction
2012/3/30
Thecontinuousstructuraltransformationoftetragonalanalcime(Na Al Si
15.87 15.20 32.64
O !/16.3 O)upondehydrationwasstudied,usingRietveldstructureanalysisoftemper-96 2
ature-resolvedpowderdiffraction...
Biotite dehydration, partial melting, and fluid composition: Experiments in the system KAlO2-FeO-MgO-SiO2-H2O-CO2
KAlO2-FeO-MgO-SiO2-H2O-CO2 Biotite dehydration partial melting
2012/3/30
Biotitesolid-solutionsareasigni?cantH Oreservoirinthelithosphere,andtheassem-2
blageBtOpxKfsQtziscommonlyusedtoestimate a inhigh-grademetamorphicHO2
andmagmaticrocks.Herewereportexperimentalconstrai...
Dehydration, Diffusion and Entrapment of Zinc in Bentonite
Bentonite Entrapment Interaction Micropore Diffusion Speciation Zinc
2011/12/8
Abstract: Interactions with bentonite are important in the chemical speciation and fate of heavy metals in soils and other ecosystems. The interactions of Zn with bentonite were studied using X-ray di...
Dehydration dynamics of stilbite using synchrotron X-ray powder diffraction
Dehydration dynamics stilbite synchrotron X-ray powder diffraction
2012/4/5
Thecontinuousstructuraltransformationofthenaturalzeolitestilbite(NaK Ba Ca Sr Mg [Fe Al Si O ]!/60 O)upondehydrationhasbeen
3.62 0.44 0.03 6.32 0.28 0.04 17.33 54.64 144 2studiedusingRietveldstructur...
The Microstructure of Three NA+ Smectites: The Importance of Particle Geometry on Dehydration and Rehydration
Beidellite Layer charge Microstructure Montmorillonite Particle Smectite TEM
2011/12/28
Recent pedological evidence of the widespread distribution of beidellites in soils indicates the need for a greater knowledge of the effect of charge location on the microstructural organization of Na...
The Interlayer Collapse during Dehydration of Synthetic Na0.7-Beidellite: A 23Na Solid-State Magic-Angle Spinning NMR Study
Beidellite Dehydration Interlayer collapse 23Na MAS-NMR
2011/12/31
The dehydration and migration of the interlayer cation of the synthetic beidellite Na0.7Al4.7Si7.3O20-(OH)4·nH2O, were studied with solid-state 23Na and 27Al MAS-NMR, heating stage XRD, and thermograv...
Dehydration of Hydroxy-Interlayered Vermiculite as a Function of Time and Temperature
Dehydroxylation Hydration X-ray diffraction
2011/12/31
Nonexchangeable polymers in interlayers of expansible phyllosilicates influence thermal dehydration in ways not completely understood. Thermal dehydration of hydroxy-interlayered vermiculite (HIV) fro...
A New Method of Dehydration for Pure Clay Materials using Peldri II
Critical point drying Freeze drying Mercury porosimetry Montmorillonite Peldri II SEM TEM
2011/12/30
A new chemical, Peldri II, is evaluated as a compound for drying soft clay materials. Peldri II, a fluorocarbon (1,1-difluorotetrachloroethane), is a solid at room temperature and is a liquid above 25...