Showing papers in "Microporous and Mesoporous Materials in 2004"

TL;DR: A review of the synthesis, structure, and properties of metal-organic frameworks (MOFs) is presented in this paper, highlighting the important advances in their research over the past decade.

TL;DR: The catalytic properties of the metal-organic framework compound Cu 3 (BTC) 2 (H 2 O) 3 ǫ x H 2 O (BTC=benzene 1,3,5-tricarboxylate) were explored in this article.

TL;DR: In this paper, the influence of pore size of MCM-41 materials on drug delivery rate has been studied and it was shown that the delivery rate of ibuprofen in a simulating body fluid solution decreases as the pore sizes decreases in the range of 3.6-2.5 nm.

TL;DR: In this paper, a molecular-sieve DDR type zeolite membrane with an aperture of 0.36 × 0.44 nm was formed on a porous alumina substrate by hydrothermal process.

TL;DR: The development of considerable mesoporosity without destruction of the intrinsic zeolite properties has been attained in various commercial zeolites by treatment in an alkaline medium as mentioned in this paper.

TL;DR: In this paper, a group of 13 zeolite-based adsorbents, including 5A, 13X, NaY and NaY-10, were selected for CO 2 removal from flue gas (mixture of CO 2 and N 2 ) using pressure swing adsorption.

TL;DR: In this paper, the effect of entrance amount on the quantity and rate of enzyme immobilization in mesoporous silicas has been investigated due to the successful morphological control of MPSs.

TL;DR: In this article, a method for the preparation of mesoporous metal oxide fibers using Pluronic 123 as the template was developed for the photodecomposition of phenol and formic acid.

TL;DR: In this article, a new series of microporous materials containing infinite chains of mononuclear metal (Cu, Zn, Ni, pyridine unit bridged by dicarboxylates, copper(II) terephthalate-pyridine, [CuII(OOCC6H4COO)(C5H5N)2(H2O)]

TL;DR: In this paper, the effect of the organosilanes present in the initial synthesis mixtures on the mesostructural properties of the resultant materials was systematically studied by varying the molar ratios of organosILane to TEOS.

TL;DR: In this paper, the light hydrocarbon sorption properties of three 8-ring zeolites, pure silica Si-CHA and ITQ-3 and high silica ZSM-58 (DDR structure type), have been measured and the adsorption rates and adaption energies of ethene, ethane, propane and propene were determined.

TL;DR: Improved the efficiency of the combinatorial search, and extended the range of the graph database to nT = 7 for some high mirror symmetry space groups, and implemented a more sophisticated Monte Carlo strategy for imbedding graphs in real space as an SiO2 composition.

TL;DR: In this article, a mathematical model has been developed which correlates the variation of the textural properties of the ZSM-5 zeolite with its crystal size, showing that the ultra-small crystal size is compatible with the detection of crystallinity.

TL;DR: In this paper, ordered mesoporous carbons with controllable pore size distributions were synthesized by using mesostructured SBA-15 silica samples as templates.

TL;DR: In this article, the Scherrer equation was used to measure the broadness of the X-ray diffraction peaks to crystal sizes of the prepared mordenite with a crystal diameter smaller than 100 nm.

TL;DR: The use of zeolites and mesoporous silicas as host materials for the supramolecular organization of organic dye molecules, metal sulfide clusters, and transition metal complexes is reviewed in this paper.

TL;DR: In this paper, two types of organic-inorganic hybrid base catalysts are prepared: organic-functionalized molecular sieves (OFMSs), particularly Aminopropylsilyl (AP)-functionalized mesoporous silicates such as AP-MCM-41, which are used as catalysts for Knoevenagel condensation.

TL;DR: In this article, the optimal conditions for highly crystalline SBA-16 with rhombdodecahedral shape as stirring time of 30 min and microwave irradiation for 120 min at 373 K were established.

TL;DR: In this paper, four kinds of TiO2 pillared clays were prepared from different raw clays (montmorillonite, saponite, fluorine hectorite and fluorine mica) and their surface hydrophobicities and performances in adsorption-photocatalytic degradation of phthalate esters were investigated.

TL;DR: In this article, the synthesis of microporous carbons done by chlorination of boron carbide at various temperatures (400-1200 °C) is presented in which the structure obtained can be controlled by varying the chlorination temperature.

TL;DR: In this article, a microwave assisted hydrothermal synthesis (MAHS) method was used to synthesize a high quality pure hydroxy-sodalite zeolite membrane.

TL;DR: In this article, a methodology for characterization and quantification of acid sites of different accessibility has been developed for dealuminated zeolite catalysts, which is based on probing the acid sites by IR spectroscopy of adsorbed alkylpyridines, followed by the characterization of the non-accessible sites by subsequently adsored CO.

TL;DR: In this article, the MFI type high silica zeolite, ZSM-5 with well-defined crystal morphology was successively synthesized in the absence of organic template within a short reaction time under stirring at 200 rpm and 463 K.

TL;DR: In this paper, dealumination and direct high silica synthesis techniques were applied to zeolite Y nanocrystals in an attempt to produce dispersible Y-nanocrystals with high acid resistance.

TL;DR: In this paper, the pore size of a mesoporous silica molecular sieve with various pore sizes was synthesized using four different types of organic auxiliary chemicals (methyl-substituted benzene (1, 3, 5, 1, 2, 4, or 1,2, 3-trimethylbenzene), isopropyl-sub-stitized benzene(1-, 1,3-di- or 1.3, 5-tri-isopropylon), alkane (octane, nonane, decane

TL;DR: In this article, a simple model is developed to describe the loading dependence of the M-Stefan diffusivity for a lattice topology with an arbitrary coordination number, which is validated by kinetic Monte Carlo simulations in square, cubic and MFI zeolite topologies.

TL;DR: In this article, periodic mesoporous ethane-silica materials were successfully functionalized with arene-sulfonic acid groups via a one-step co-condensation approach using BTME (1,2- bis (trimethoxysilyl)ethane) and CSPTMS (2-(4-chlorosulfonylphenyl)ethyltrimETHoxysilane) as framework precursors.

TL;DR: Partially crystalline and X-ray amorphous ZSM-5 zeolite-based aluminosilicates have been synthesized and thoroughly characterized by chemical analysis as mentioned in this paper.