Journal ArticleDOI
Structural order in MCM-41 controlled by shifting silicate polymerization equilibrium
Ryong Ryoo,Ji Man Kim +1 more
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Powder X-ray diffraction, 29Si and 129Xe NMR spectroscopy of MCM-41 showed that the long-range structural order and textural uniformity of the mesoporous molecular sieve are markedly improved due to a shift in the reaction equilibrium when acetic acid is repeatedly added during the conversion of sodium silicate and NMe3(C16H33)Cl to a MCM41 phase.Abstract:
Powder X-ray diffraction, 29Si and 129Xe NMR spectroscopy of MCM-41 show that the long-range structural order and textural uniformity of the mesoporous molecular sieve are markedly improved due to a shift in the reaction equilibrium when acetic acid is repeatedly added during the conversion of sodium silicate and NMe3(C16H33)Cl to a MCM-41 phase.read more
Citations
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From Microporous to Mesoporous Molecular-Sieve Materials and Their Use in Catalysis
TL;DR: Corma et al. as mentioned in this paper used the Dupont Award on new materials (1995), and the Spanish National Award “Leonardo Torres Quevedo” on Technology Research (1996) on technology research (1996), to recognize the performance of zeolites as catalysts for oil refining and petrochemistry.
Journal ArticleDOI
Mesoporous silica molecular sieves prepared by ionic and neutral surfactant templating : A comparison of physical properties
TL;DR: In this article, a series of mesoporous MCM-41 and HMS silica molecular sieves have been prepared by electrostatic and neutral assembly pathways, respectively, and their properties have been compared by a variety of physical techniques.
Journal ArticleDOI
Recent advances in processing and characterization of periodic mesoporous MCM-41 silicate molecular sieves
TL;DR: A critical review of the developments in these areas with particular emphasis on adsorption characteristics, progress in controlling the pore sizes, and a comparison of pore size distributions using traditional and newer models is provided in this article.
Journal ArticleDOI
Perspectives in catalytic applications of mesostructured materials
TL;DR: In this paper, a review paper deals with proven and potential applications of mesoporous molecular sieves in catalysis, and is divided into two parts, respectively, dedicated to the design of solid catalysts and catalyst supports and to some relevant examples of catalytic processes.
Journal ArticleDOI
Structural and morphological control of cationic surfactant-templated mesoporous silica
Hong Ping Lin,Chung-Yuan Mou +1 more
TL;DR: The physical chemistry of solution silicate species and surfactants in the synthesis of mesoporous silicas is reviewed and controls in surfactant packing and liquid crystalline phase transformation can lead to various tailored synthesis strategies.
References
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Journal ArticleDOI
Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism
TL;DR: In this paper, the synthesis of mesoporous inorganic solids from calcination of aluminosilicate gels in the presence of surfactants is described, in which the silicate material forms inorganic walls between ordered surfactant micelles.
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A new family of mesoporous molecular sieves prepared with liquid crystal templates
Jeffrey S. Beck,James C. Vartuli,Wieslaw J. Roth,M. E. Leonowicz,Charles T. Kresge,Kirk D. Schmitt,Cynthia Ting-Wah Chu,David H. Olson,E. W. Sheppard,S. B. McCullen,J. B. Higgins,J.L. Schlenker +11 more
TL;DR: In this paper, the synthesis, characterization, and proposed mechanism of formation of a new family of silicatelaluminosilicate mesoporous molecular sieves designated as M41S is described.
Journal ArticleDOI
Generalized synthesis of periodic surfactant/inorganic composite materials
Qisheng Huo,David I. Margolese,Ulrike Ciesla,Pingyun Feng,Thurman E. Gier,Peter Sieger,R. Leon,Pierre Petroff,Ferdi Schüth,Ferdi Schüth,Galen D. Stucky +10 more
TL;DR: In this article, a generalized approach to the synthesis of periodic mesophases of metal oxides and cationic or anionic surfactants under a range of pH conditions is presented.
Journal ArticleDOI
Titanium-containing mesoporous molecular sieves for catalytic oxidation of aromatic compounds
TL;DR: The use of the templating approach to synthesize mesoporous silica-based molecular sieves partly substituted with titanium—large-pore analogues of titanium silicalite find that these materials show selective catalytic activity towards the oxidation of 2,6-ditert-butyl phenol to the corresponding quinone and the conversion of benzene to phenol.
Journal ArticleDOI
Cooperative Formation of Inorganic-Organic Interfaces in the Synthesis of Silicate Mesostructures
Alain Monnier,Ferdi Schüth,Ferdi Schüth,Ferdi Schüth,Qisheng Huo,Dinesh Kumar,David I. Margolese,R.S. Maxwell,Galen D. Stucky,M. Krishnamurty,Pierre Petroff,A. Firouzi,Michael T. Janicke,Bradley F. Chmelka +13 more
TL;DR: Model Q230 proposed by Mariani and his co-workers satisfactorily fits the x-ray data collected on the cubic mesostructure material and suggests that the silicate polymer forms a unique infinite silicate sheet sitting on the gyroid minimal surface and separating the surfactant molecules into two disconnected volumes.