نتایج جستجو برای: mineral interlayer

تعداد نتایج: 72535  

2001
A.G.B. Williams

Key words: mineral/water interface, reduced Fe minerals, natural attenuation To address the potential for abiotic natural attenuation of chromate, we have studied the kinetics and mechanism of chromate removal in the presence of hydroxycarbonate green rust. The kinetics of chromate removal were studied in batch systems to evaluate the effect of green rust surface area and pH. The rate of chroma...

2006
TERESA J. BANDOSZ JACEK JAGIELLO JAMES A. SCHWARZ

-Inverse gas chromatography at infinite dilution, employing alkanes and alkenes as probes, has been used to characterize the surface properties of a series of smectites of varying chemical composition. The results of this study show that the acidic centers and the interlayer distances have a great influence on the specific interaction of the smectite surface with ~r-bonds of alkenes. High value...

2017
Jin Zhang Hao Hong Chao Lian Wei Ma Xiaozhi Xu Xu Zhou Huixia Fu Kaihui Liu Sheng Meng

Light-induced interlayer ultrafast charge transfer in 2D heterostructures provides a new platform for optoelectronic and photovoltaic applications. The charge separation process is generally hypothesized to be dependent on the interlayer stackings and interactions, however, the quantitative characteristic and detailed mechanism remain elusive. Here, a systematical study on the interlayer charge...

Journal: :Dalton transactions 2014
Qiao Qiao Hao Yang Jian-Lan Liu Shun-Ping Zhao Xiao-Ming Ren

Kaolinite (K), a polar and layered aluminosilicate mineral, was used as the host; ethanolamine (EOA) and ethylene glycol (EG) were inserted into the kaolinite interlayer to give the intercalated supramolecular compounds kaolinite-ethanolamine (K-EOA) and kaolinite-ethylene glycol (K-EG), respectively. The intercalation of EOA and EG resulted in an increase in the d(001)-value by 3.4 and 3.68 Å,...

2001
X. G. Wen A. Zee

We study interlayer transport in double-layered (mmm) quantum Hall liquids in the weak tunneling limit, in particular the effects of lead geometry on the I-V characteristics of interlayer tunneling. We proposed several practical ways to study experimentally the novel interlayer transport properties in the double-layered (mmm) quantum Hall liquids. Some concrete predictions on the DC characteris...

2013
Penghui Zhang Jinliang Zhang Shuo Xu Fang Ding

Study on the interlayer has developed associated with in-depth exploration and development of oil fields, which is an indispensable part to characterize reservoir heterogeneity. This study relates to a comprehensive research method of interlayer in rhythmic layering in continental low permeability reservoirs. During the process of waterflooding development, distribution characteristics of inter...

Journal: :Dalton transactions 2014
Hipassia M Moura Heloise O Pastore

Novel hybrid mesoporous and functionalized materials with controllable surface area and pore dimensions with functional basic sites (-NH2) were synthesized from magadiite and [Al]-magadiite as layered silicate precursors. The variable pore structure and properties of these materials were investigated in these solids by using different CTA(+)/Na(+) (CTA(+) = cetyltrimethylammonium cation) molar ...

احسانی, راحله , رمضانپور, حسن, زنجانچی, محمدعلی ,

The mineralogical and geochemical composition of the soils of three representat ive pedons fanned on basaltic andesite, andes itic basalt and phyllite were investigated. Results by XRF showed that progressive weathering of rocks have been marked by gradual accumulation of AI, Fe, Ti, Mg. H30+ and depletion of Na, K, Ca and Si in the soi l; although, predominant clay, loss and gain trend of...

2006
GARRISON SPOSITO SUNG-HO PARK

-Monte Carlo simulations based on tested water-water, cation-water, and water-clay potential functions were applied to calculate radial distribution functions for O-O, O-H and H-H spatial correlations in the interlayer region of the two-layer hydrates of Naand K-montmorillonite. The simulated radial distribution functions then were used to compute the total radial distribution function for inte...

Journal: :Physical review letters 2008
A R Champagne J P Eisenstein L N Pfeiffer K W West

We study the Josephson-like interlayer tunneling signature of the strongly correlated nuT=1 quantum Hall phase in bilayer two-dimensional electron systems as a function of the layer separation, temperature, and interlayer charge imbalance. Our results offer strong evidence that a finite temperature phase transition separates the interlayer coherent phase from incoherent phases which lack strong...

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