Showing papers in "Microporous and Mesoporous Materials in 2008"

TL;DR: The remarkable progress made in the preparation and characterization of zeolite membranes during the last few years has stimulated several industrial R&D projects exploiting the shape-selectivity of ZO membranes in mass separation as mentioned in this paper.

TL;DR: In this article, a series of mesoporous silica materials were synthesized and impregnated with 50% polyethyleneimine (PEI) in methanol to evaluate the performances of the materials in terms of CO2 adsorption (adsorption-desorption in 150min cycle each at 75°C).

TL;DR: In this article, the effects of contact time, initial pH and initial dye concentration on the malachite green adsorption by the bentonite have been studied, and it was shown that the removal was seen to increase with increasing contact time.

TL;DR: In this article, the effect of surface properties on phenol adsorption in aqueous phase onto activated carbons (ACs) having different textural and surface properties has been considered.

TL;DR: In this paper, the main types of nanoporous adsorbents for water are identified and described with emphasis on the mechanism of adsorption, modification, improvement of the water sorption capacity, possible regeneration, and stabilization.

TL;DR: In this paper, the use of layered materials (layered perovskite, anionic clays, pillared clays) in catalytic reactions is reviewed with emphasis on the possibilities offered from these catalysts to develop new processes for environmental protection, selective oxidation and refinery/biorefinery.

TL;DR: In this article, an as-prepared mesoporous anatase TiO2 thin film was fabricated by incorporating Ag nanoparticles in the pores of the thin film with an impregnation method via photoreduction.

TL;DR: The catalysis and sorption properties of faujasite zeolites depend largely on the extraframework species present, notably the cations as discussed by the authors, and a review paper gathers all cation distributions in X and Y type faujaite type zeolite known to the authors and available in the literature by mid 2007.

TL;DR: In this article, the effect of synthesis conditions on the morphology and crystal size of copper benzene tricarboxylate (Cu 3 (BTC) 2, also known as HKUST-1) is determined to optimize the strategies for the synthesis of continuous layers.

TL;DR: In this paper, the effects of operating conditions for each activation method on the BET surface area of the product and reaction yield were investigated using central composite design (CCD) for both activation processes.

TL;DR: SBA-12 mesoporous silica was modified by 3-aminopropyl (AP), 3-(methylamino)propyl (MAP) and 3-(phenylamino),propyl, (PAP) ligands as mentioned in this paper.

TL;DR: In this paper, the synthesis, structural aspects and intercalation properties of hydrotalcite-like compounds (HTlc) of anti-inflammatory drugs, sunscreen and antimicrobials species are discussed.

TL;DR: In this article, the effects of microwave power level, irradiation time, temperature, solvent concentration, and substrate composition on the product crystallinity and morphology were investigated, and the results showed that prolonged microwave irradiation resulted in sharp deterioration of the physicochemical properties.

TL;DR: In this paper, two approaches, thermal swing desorption over a range of temperatures and time in an atmosphere of CO 2 and using nitrogen as a stripping gas at elevated temperatures, are explored for the regeneration of the polyethylenimine based adsorbents.

TL;DR: In this article, chabazite zeolites were prepared and exchanged with alkali cations (Li, Na, K and alkaline-earth cations) to assess their potential for CO2 capture from flue gas by vacuum swing adsorption for temperatures below 120°C.

TL;DR: In this article, a novel CO2 capturer with high efficiency is fabricated through dispersing the amine mixture of tetraethylenepentamine (TEPA) and diethanolamine (DEA) or glycerol within the as-synthesized mesoporous silica SBA-15, and the resulting sample is characterized by low angle X-ray diffraction and N2 adsorption to evaluate the distribution of the guest.

TL;DR: In this article, a CO2 sorbent with high sorption capacity and long life time was developed by screening and testing two different microporous CaO precursors, Ca(OH)2 and Ca(CH3COO)2.

TL;DR: In this paper, a 16 parallel-batch reactor was used to study the influence of the treatment time and temperature on the physico-chemical properties of the zeolites, which were characterized by ICP-OES, XRD, N2 adsorption at 77 K, SEM, TEM, DRIFTS, and in situ ATR-IR.

TL;DR: In this article, three porous coordination polymers, namely, Cu 3 (btc), Zn 2 (bdc) 2 dabco, and Cr 3 F(H 2 O) 2 O(BDc) 3 (MIL-101) (3 ) were evaluated as methane storage materials.

TL;DR: In this article, the halloysite nanotubes (HNTs) were used as nano-adsorbents for the removal of the cationic dye, methylene blue (MB), from aqueous solutions.

TL;DR: In this article, a detailed study on surface and structure modification of the recently developed ordered mesoporous carbons (OMCs) via a liquid-phase chemical oxidation approach is presented.

TL;DR: In this article, the photocatalytic activity was evaluated for the degradation of the methyl-orange dye, and the results showed that 93% of the dye could be removed by the Zn/Al-LDH with the cationic ratio of 4 and calcined at 500°C.

TL;DR: In this paper, the degree of polymerization of the predominant silica species in the activation solutions plays an important role in the kinetics, structure and composition of the gel initially formed.

TL;DR: In this paper, a known swelling agent, 1,3,5-trimethylbenzene (TMB), was used to increase the pore size with increased aging temperature and prolonged aging time.

TL;DR: SAPO-34 molecular sieve was successfully synthesized using diethylamine (DEA) as a template and the influence of template concentration and silica concentration on the synthesis were investigated.

TL;DR: In this article, a functionalized SBA-16 mesoporous silica with SH groups was synthesized using one-pot method and the resulting material was characterized by powder X-ray diffraction, nitrogen gas sorption, FT-Raman spectroscopy.

TL;DR: In this article, the preparation of a thin film of the metal-organic framework Cu3(BTC)2(H2O)3 ǫ·x H2O (HKUST-1) on the gold electrode of a quartz-crystal microbalance (QCM) was achieved by direct growth on a 11mercaptoundecanol self-assembled monolayer (SAM).

TL;DR: In this paper, a batch-sorption experiment was carried out to remove a cationic dye, methylene blue (MB), from its aqueous solutions using a commercial activated carbon as an adsorbent.

TL;DR: Hierarchically 3D porous mesoporous bioactive glasses (MBGs) scaffolds with four different chemical compositions have been successfully prepared by a combination of polyurethane sponge and non-ionic block copolymer EO20PO70EO20 (P123) surfactant as co-templates and evaporation-induced self-assembly process as discussed by the authors.

TL;DR: In this article, the authors examined the variation in physico-mechanical properties and mineralogical and microstructural characteristics of the alkaline inorganic polymers obtained by alkaline activation, with a mixture of sodium silica solution and sodium hydroxide.