نتایج جستجو برای: mineral interlayer

تعداد نتایج: 72535  

Journal: :Chemical communications 2012
Bilge Yilmaz Ulrich Müller Mathias Feyen Haiyan Zhang Feng-Shou Xiao Trees De Baerdemaeker Bart Tijsebaert Pierre Jacobs Dirk De Vos Weiping Zhang Xinhe Bao Hiroyuki Imai Takashi Tatsumi Hermann Gies

A ferrierite-type layered aluminosilicate, Al-RUB-36, was prepared for the first time and its interlayer expansion resulted in new zeolite catalysts denoted Al-COE-3 and Al-COE-4. Decane hydroconversion tests demonstrated the highly active and shape-selective nature of the new Al-COE-4 catalyst with an unprecedented isomerization yield, highlighting the potential of this material as a hydroisom...

2004
Sylvain Capponi Congjun Wu Shou-Cheng Zhang

Strongly interacting systems have been conjectured to spontaneously develop current carrying ground states under certain conditions. We demonstrate the existence of a commensurate staggered interlayer current phase in a bilayer model by using the recently discovered quantum Monte Carlo algorithm without the sign problem for fermionic systems. A pseudospin SUs2d algebra and the corresponding ani...

Journal: :Physical review letters 2009
Naoya Tajima Shigeharu Sugawara Reizo Kato Yutaka Nishio Koji Kajita

We report on the experimental results of interlayer magnetoresistance in the multilayer massless Dirac fermion system alpha-(BEDT-TTF)2I3 under hydrostatic pressure and its interpretation. We succeeded in detecting the zero-mode Landau level (n=0 Landau level) that is expected to appear at the contact points of Dirac cones in the magnetic field normal to the two-dimensional plane. The character...

Journal: :Applied Clay Science 2021

Butylimidazole (Bim) a well-known copper corrosion inhibitor was encapsulated in its cationic form, smectite type clay mineral (Sabga (Sg)) by cation exchange of sodium cations located the interlayer space layered mineral. Physicochemical characterization (XRD, FT-IR and TGA) revealed that Bim intercalated (0.48 mmol per gram hybrid material) form. The intercalation followed an increase layer t...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2017
Xi Yang Yong Du Xi Zhang Ai He Zhi-Kang Xu

A mussel-inspired interlayer of polydopamine (PDA)/polyethylenimine (PEI) is codeposited on the ultrafiltration substrate to tune the interfacial polymerization of piperazine and trimesoyl chloride for the preparation of thin-film composite (TFC) nanofiltration membranes (NFMs). This hydrophilic interlayer results in an efficient adsorption of piperazine solution in the substrate pores. The sol...

Journal: :Journal of colloid and interface science 2011
Christophe Tournassat Mohamed Bizi Gilles Braibant Catherine Crouzet

The spatial organisation of swelling clay platelets in a suspension depends on the chemical composition of the equilibration solution. Individual clay platelets can be well dispersed, with surfaces entirely in contact with the external solution, or be stacked in tactoids, where part of the surfaces forms parallel alignments embedding interlayer water and cations. External and interlayer surface...

2009
A. Mathur C. Dickinson

The aluminum (Al) interlayer with various thicknesses ranging from 0.75 to 6 nm was deposited on silicon (Si) substrates prior to the deposition of ultra-thin iron (Fe) catalyst for the growth of carbon nanotubes. In this paper we report the effect of ultra-thin Al interlayer on the growth of multiwalled carbon nanotubes (MWCNTs). The SEM was used to examine the microstructures of nanotubes. We...

Journal: :Physical review letters 2017
Hiroki Isobe Liang Fu

We study the pairing symmetry of the interlayer paired state of composite fermions in quantum Hall bilayers. Based on the Halperin-Lee-Read (HLR) theory, the effect of the long-range Coulomb interaction and the internal Chern-Simons gauge fluctuation is analyzed with the random-phase approximation beyond the leading order contribution in small momentum expansion, and we observe that the interla...

Journal: :Physical chemistry chemical physics : PCCP 2010
Dinh Loc Duong Gunn Kim Hae-Kyung Jeong Young Hee Lee

Different bulk structures of graphite oxide were systematically investigated using density functional theory (DFT). Our model consisted of a hexagonal in-plane structure of graphene with hydroxyl and epoxide groups, and different oxidation levels and water content. The graphitic AB stacking order was stable in anhydrous graphite oxide, independent of oxidation levels. The hydrogen bonding inter...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Carlos Alvarez Martial Mazars Jean-Jacques Weis

We present extensive Monte Carlo simulations for the thermodynamic and structural properties of a planar bilayer of dipolar hard spheres for a wide range of densities, dipole moments, and layer separations. Expressions for the stress and pressure tensors of the bilayer system are derived. For all thermodynamic states considered, the interlayer energy is shown to be attractive and much smaller t...

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