搜索结果: 1-15 共查到“凹凸棒石 Hydrogen”相关记录19条 . 查询时间(0.125 秒)
Effect of Hydrogen Bonding Interaction on the Properties of Caprolactam-Modified Casein/Waterborne Polyurenthane Composite
Hydrogen Bonding Interaction Modified Casein Waterborne Polyurethane (WPU)
2011/12/15
Caprolactam modified casein(CA-CPL) was prepared by using casein and caprolactam firstly. Caprolactam modified casein/waterborne polyurethane composite (CA-CPL/WPU) was prepared from CA-CPL and WPU. E...
A New Concept: Hydrogen Storage in Minerals
Clay Graphite Hydrogen Storage Mineral Palygorskite Sepiolite Zeolite
2011/11/14
Some minerals were considered to store hydrogen on the basis of their porous crystal structure. Besides of crystal graphite and zeolite, some natural clay minerals such as palygorskite-sepiolite miner...
Mechanisms and Crystal Chemistry of Oxidation in Annite: Resolving the Hydrogen-Loss and Vacancy Reactions
Annite Biotite Crystal Chemistry Differential Thermal Analysis Ferrioxyannite Gas Chromatography Mossbauer Spectroscopy
2011/12/5
Abstract: A synthetic octahedral-site-vacancy-free annite sample and its progressive oxidation, induced by heating in air, were studied by powder X-ray diffraction (pXRD), Mössbauer spectroscopy,...
Hydrogen in diopside: Diffusion, kinetics of extraction-incorporation, and solubility
Hydrogen diopside Diffusion kinetics extraction-incorporation solubility
2012/4/1
The kinetic of H extraction-incorporation in diopside single-crystals (Ca . Na Cr Mg0 97 0.02 0.01 0.97Fe Si O ) deduced by monitoring OH infrared absorption bands for samples heated from 973 to0.036 ...
Vibrational spectra of dense, hydrous magnesium silicates at high pressure: Importance of the hydrogen bond angle
high pressure hydrogen bond angle dense hydrous magnesium silicates
2012/3/31
Changes in configuration and hydrogen bonding are inferred from the complex responses of
peak parameters (frequency, width, height, and area) to compression for various hydroxyl groups) depend not on...
Single-crystal IR spectroscopy of very strong hydrogen bonds in pectolite, NaCa2[Si3O8(OH)], and serandite, NaMn2[Si3O8(OH)]
Single-crystal IR spectroscopy hydrogen bonds NaCa2[Si3O8(OH)] NaMn2[Si3O8(OH)]
2012/3/31
Polarized infrared absorption spectra of thin, oriented single-crystal slabs of pectolite and serandite were recorded between 4000 and 350 cm 21 at 298 and 83 K. The spectra of both minerals show a br...
Bottinoite, Ni(H2O)6[Sb(OH)6]2: Crystal structure, twinning, and hydrogen-bond model
Bottinoite Ni(H2O)6[Sb(OH)6]2 Crystal structure twinning hydrogen-bond model
2012/4/9
The crystal structure ofbottinoite, Ni(H20MSb(OH)6L, wasdetermined from a twinned crystal. This study revealed that the strong 31m pseudosymmetry shown by allthe natural and synthetic crystals examine...
Hydrogen positions and thermal expansion in lizardite-1T from Elba: A low-temperature study using Rietveld refinement of neutron diffraction data
Hydrogen positions thermal expansion lizardite-1T Elba low-temperature study neutron diffraction data
2012/4/6
Thestructure oflizardite-l Tfrom MonteFico,Elba,wasrefined in spacegroupP31m usingneutron diffractiondata, measuredat 8, 150,and 294K,and full-profile Rietveld
refinement techniques. Thelattice param...
2H NMR spectra of synthetic deuterated kaolinite have been collected in the temperature range from 150 K to 350 K. Hydroxyl groups show a Pake doublet pattern with an asymmetry factor of 0. They are a...
Implications of Linearly Correlated Oxygen and Hydrogen Isotopic Compositions for Kaolinite and Illite in the Magnus Sandstone, North Sea
Illite Kaolinite Stable isotopes Porewater
2011/12/29
Authigenic kaolinite and illite are important diagenetic minerals in the Magnus Sandstone, a giant oil reservoir in the northern North Sea. These clay minerals, separated from three wells, show consid...
Chemical Characterization, Structural Features, and Thermal Behavior of Sodium and Hydrogen Octosilicate
Octosilicate Sheet silicates MAS-NMR spectroscopy Thermal behavior
2012/1/4
The chemical composition and the thermal behavior of sodium and hydrogen octosilicate was studied by chemical and thermal analysis, infrared (IR), magic-angle-spinning nuclear magnetic resonance (MAS-...
Rietveld Refinement of Non-Hydrogen Atomic Positions in Kaolinite
Crystal structure Dickite Kaolinite Rietveld refinement X-ray powder diffraction
2012/1/5
The structure of kaolinite (non-hydrogen atoms only) from Keokuk, Iowa, was refined in space group C1 using CuKα X-ray powder diffraction data and Rietveld refinement techniques (Rwp = 12.3%). A dista...
Role of Structural Hydrogen in the Reduction and Reoxidation of Iron in Nontronite
Hydrogen Nontronite Oxidation Reduction Structural sites Tritium
2012/2/2
The effects of reduction and reoxidation of octahedral Fe3+ on the exchange of structural hydrogen in nontronite were determined using tritium (3H) as a label element. The uptake of H from the surroun...
Hydrogen Atom Positions in Kaolinite by Neutron Profile Refinement
Crystal structure Hydrogen Kaolinite Neutron profile refinement O-H vector Rietveld method
2012/2/7
A structure refinement of kaolinite made using the Rietveld neutron profile refinement technique has given non-hydrogen atom positions which were not significantly different from those given by B. B. ...
Hydrogen Atoms in Boehmite: A Single Crystal X-Ray Diffraction and Molecular Orbital Study
Aluminum hydroxide Boehmite Crystal structure Electron density Hydrogen positions Molecular orbitals Single crystal
2012/2/8
The crystal structure of natural boehmite, AlOOH, from Tveidalen, Langesundsfjorden, Norway, with a = 3.693(1), b = 12.221(2) and c = 2.865(1) Å, was refined from single crystal X-ray diffractio...