Preparation, characterization and application of the magadiite based mesoporous composite material of catalytic interest

Fudala, Á.; Kiyozumi, Yoshimichi; Niwa, Shu‐ichi; Toba, Makoto; Mizukami, Fujio; Lentz, Patrick; Nagy, J.B.; Kiricsi, Imre

doi:10.1016/s1387-1811(99)00257-7

Cited by 19 publications

(19 citation statements)

References 42 publications

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“…8, curve a) reported before. 17,18 As shown in a previous work, 14 the addition of the aluminium source in the initial gel (direct method) results in an amorphous material or heavily contaminated magadiite. However, using this direct method and seeding crystals of magadiite prepared ex situ, a crystalline material with essentially the same diffraction characteristics of that obtained by the Aluminium-Induced Crystallization method (AIC) is prepared (compare curves a and b in Fig.…”

Section: The Ex Situ Seeding In the Synthesis Of [Al]-magadiitementioning

confidence: 84%

“…After 6 h, [Al]-magadiite is already more crystalline and with 12 h of hydrothermal treatment the solid presents the magadiite structure with good crystallinity evidenced by the sharp and well defined peaks. 17,18 It is important to indicate that the total time of [Al]magadiite synthesis is 36 h against 66 h for Na-magadiite, 3 thus aluminium is also a catalyst for the preparation of [Al]-magadiite.…”

Section: Monitoring Of Synthesismentioning

confidence: 99%

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Aluminium-magadiite: from crystallization studies to a multifunctional material

et al. 2011

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Section: The Ex Situ Seeding In the Synthesis Of [Al]-magadiitementioning

confidence: 84%

Section: Monitoring Of Synthesismentioning

confidence: 99%

Aluminium-magadiite: from crystallization studies to a multifunctional material

et al. 2011

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“…Very recently, it has been also reported that magadiite can be used in the synthesis of composite mesoporous materials by the intercalation of silica between the magadiite layers. 8 Magadiite, the most frequently researched, with the idealized formula Na 2 Si 14 O 29 ‚nH 2 O (n ) 8-10), has a multilayer structure, the sodium ions and water molecules being placed between the layers. [1][2][3][4][5] Its basal spacing of ca.…”

Section: Introductionmentioning

confidence: 99%

“…These properties permit us to use the sodium silicates in adsorbent, catalytic, and detergent systems 3 . Very recently, it has been also reported that magadiite can be used in the synthesis of composite mesoporous materials by the intercalation of silica between the magadiite layers …”

Section: Introductionmentioning

confidence: 99%

Structural and Motional Features of a Layered Sodium Hydrous Silicate as Revealed by Solid State NMR

Gardiennet

Tékély

2002

J. Phys. Chem. B

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An approach for the investigation of layered alkali metal polysilicate hydrous materials is presented by choosing complementary multinuclear NMR methodologies. New insights into the structural and motional features of magadiite, a layered sodium silicate hydrate, have been gained using 1H, 2H, 29Si and 23Na one- and two-dimensional NMR experiments. Complementary 1H MAS single- and double-quantum studies have proven to be powerful tools in a clear recognition of the nature of hydrous species involved in hydrogen bonding. 1H and 2H MAS experiments permitted us to determine the extent of the mobility of water molecules and provided corroborating evidences of an intralayer, strongly hydrogen bonded character of silanol groups. On the basis of a novel strategy in the analysis of the cross polarization dynamics, it appeared that magadiite contains two types of structurally different Q(3) tetrahedra, as well as two types of sodium ions. The strategy applied in this work might be useful to obtain structural and motional information in the related layered alkali metal silicates, as well as in other classes of nanoporous materials.

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“…59 it has been used mainly as a base for the preparation of mesoporous catalyst. 60 The silicic acids have been synthesized by hydrothermal methods. [61][62][63][64] For example, sodium magadiite (Na-MAG) was produced by heating for 4 weeks at T ¼ 1008C aqueous suspension of SiO 2 with NaOH, or by combining silica gel with NaOH solution in an autoclave, and heating the mixture with stirring (at 1508C for 42 hr or at 1808C for 20 hr) under autogenous pressure.…”

Section: Synthetic Clays-methods Of Preparationmentioning

confidence: 99%

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Utracki

Sepehr

Boccaleri

2007

Polymers for Advanced Techs

381

252

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Synthetic, layered nano-particles for polymeric nanocomposites (PNC's)Utracki, L. A.; Sepehr, M.; Boccaleri, E.Contact us / Contactez nous: nparc.cisti@nrc-cnrc.gc.ca.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site Web page / page Web http://dx.doi.org/10.1002/pat.852 http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=fr LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en This review discusses preparation and use of the synthetic layered nanoparticles in polymer matrices, i.e., in the polymeric nanocomposites (PNCs). Several types of synthetic or semi-synthetic layered materials are considered, namely the phyllosilicates (clays), silicic acid (magadiite), layered double hydroxides (LDHs), zirconium phosphates (ZrPs), and di-chalcogenides. The main advantage of synthetic clays is their chemical purity (e.g. absence of amorphous and gritty contaminants, as well as arsenic, iron, and other heavy metals), white to transparent color that assures reproducibly of brightly colored products, as well as a wide range of aspect ratios, p ¼ 20 to £6000. Several large scale production facilities have been established. The synthetic clay and LDH industries are oriented toward big volume markets: catalysis, foodstuff, cosmetics, pharmaceuticals, toiletry, etc. The use of these materials in PNCs is limited to synthetic clays and LDHs, mainly for reinforcement, permeability control, reduction of flammability, and stabilization, e.g. during dehydrohalogenation of chlorinated macromolecules. The use of lamellar ZrPs and di-chalcogenides is at the laboratory stage of functional polymeric systems development, e.g. for electrically conductive materials, catalysts or support for catalysts, in photochemistry, molecular and chiral recognition, or in fuel cell technologies, etc. Copyright # 2007 John Wiley & Sons, Ltd.KEYWORDS: polymeric nanocomposites; nanoparticles; clay; layered double hydroxides; matrix POLYMERS FOR ADVANCED TECHNOLOGIES Polym. Adv. Technol. 2007; 18: 1-37 Published online in Wiley InterScience (www.interscience.wiley.com) DOI: 10.1002/pat.852 AUTHORS' BIOGRAPHIESDr Leszek A. Utracki was born and educated (up to Habilitation) in Poland. After the post-doctoral stage at USC in Los Angeles with Robert Simha he settled in Canada. His passionate research interest has been within the field of thermodynamics, rheology and processing of multicomponent, multiphase polymeric systems. During the 55 years in the profession he has published several hundred articles, book chapters, books, patents, etc., which has placed him on the ISI li...

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Preparation, characterization and application of the magadiite based mesoporous composite material of catalytic interest

Cited by 19 publications

References 42 publications

Aluminium-magadiite: from crystallization studies to a multifunctional material

Aluminium-magadiite: from crystallization studies to a multifunctional material

Structural and Motional Features of a Layered Sodium Hydrous Silicate as Revealed by Solid State NMR

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

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