Al-MCM-41
Immobilization of Cu(II)-Histidine Complex on Al-MCM-41 as Catalyst for Epoxidation of Alkenes
... X-ray diffraction (XRD), nitrogen adsorption desorption, FTIR, UV-Vis and chemical analysis techniques. The surface area and pore volume were found to decrease after immobilization of Cu(II) complex on ...
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Iron-porphyrin encapsulated in poly(methacrylic acid) and mesoporous Al-MCM-41 as catalysts in the oxidation of benzene to phenol
... of MCM-41 amounts to approximately only 10 m 2 g − 1 [23], which is related to less than 1% of total surface area, well-dispersed Fe-TPyP can only to a very small extent be situated at the external surface ...
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Preparation and characterization of CeO2/Al MCM 41 catalysts and its effect on NO conversion efficiency
... Attapulgite is firstly mixed with solid NaOH at mass ratio of 1:1.5. The mixture is heated at 600 °C for 2 h, subsequently dispersed in deionized water by stirring and then aged at room temperature for 24 h. The ...
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Immobilized Vanadium Compounds within Nanoreactors of Al-MCM-41 as Catalyst for Epoxidation of Alkenes
... In order to choose the best reaction time in the presence of 0.10 g of the VO 2+ /Al-MCM-41 catalyst, the oxidation reactions were carried out at different times using trans-stilbene as representing ...
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Synthesis of High Stability Acidic β/Al MCM 41 and the Catalytic Performance for the Esterification of Oleic Acid
... In present paper, we reported the preparation and characterization of the molecular sieves β/Al-MCM-41, and the application in the esterification of oleic acid with short chain alcohols. The ...
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Synthesis, characterization and activity of AL-MCM-41 catalyst for hydroxyalkylation of epoxides
... Measurement. Al-MCM-41 was tested to catalyse the hydroxyalkylation of benzene and propylene oxide; chosen as a model reaction, to produce ...
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Synthesis of TiO2/Al MCM 41 Composites with Coal Measure Kaolin and Performance in Its Photocatalysis
... coal-measure kalin as starting materials and the photo- catalytic degradation of methyl orange by these compos- ites under visible light irradiation. We have used tetrabutyl titanate as Ti source and ethanol medium for ...
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Iron(III)-porphyrin immobilized on mesoporous A1-MCM-41 and polymethacrylic acid as catalysts for the single-step synthesis of phenol from benzene
... mesoporous MCM-41 supports by physical adsorption or covalent ...to MCM-41 by Maschmeyer et ...of Al-MCM-41 have been reported to be an active catalyst towards ...
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Mesoporous zeolites as catalysts for the production of specialty and fine chemicals
... mesoporous Al-MCM-41 (H-Al-MCM-41) was used in the dibenzoylation of biphenyl reaction using benzoyl chloride as benzoylating ...H-Al- MCM-41 with various ...
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Polyethylene oxide-mcm-41 and polyaniline-mcm-41 nanocomposites: physicochemical and conducting properties
... oxide (PEO) segments with Li-Al-MCM-41 surface groups. The dashed lines indicate possible hydrogen- bond donating (MCM-41)/hydrogen-bond accepting and Al-Li-O interaction sites. ...
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Synthesis and Characterization of Zno-Ag Nanoparticles Supported on MCM-41 as Photocatalyst.
... The XRD patterns of ZnO-Ag/MCM-41, ZnO, ZnOC, ZnO-Ag, MCM-41, ZnO/MCM-41, ZnOC/MCM-41 particles are presented in Fig. 2. For ZnO-Ag/MCM-41, Fig. 2a) ...
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Modification of Mesoporous Silica MCM-41 and its Applications- A review
... of MCM-41 and their application in the recent years (2000– 2012) are summarized in Table ...modified MCM- 41 include structural analyses such gas sorption studies, powder X-ray diffraction ...
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Production of Carbon Nanotubes and Hydrogen Catalyzed with Ni/MCM 41 Catalysts
... For MCM-41 synthesis, fumed silica was used as Si source and cetyltrimethylammonium chloride (CTACl) as synthetic template. 1.2 g of fumed silica were added into 10.0 g of 45% tetrabutylammonium hydroxide ...
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Effect of Synthesis Conditions on Textural Properties of Silica MCM-41
... of MCM-41 with uniform partied size and narrow mesopore distribution under the very dilute surfactant solution (~1%) turned into irregular or plate-like aggregates at higher concentrations of the ...
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Immobilization of Lipase from Candida rugosa on Mesoporous MCM 41
... immobilize the enzyme, making possible to use it continuously as biocatalyst. The aim of this work was to measure the influence of the mass of support and pH used for immobilization of commer- cial lipase from Candida ...
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Thermal stability of conductivity of composite comprising polyaniline and MCM-41
... ABSTRACT: A composite of mesoporous silica (MCM-41) with a polyaniline (PANI) conducting polymer was synthesized by in situ polymerization method. PANI/MCM-41 conducting polymer composites ...
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Template Recycling and Reuse in MCM-41 Synthesis: Statistical Study
... of MCM-41 synthesis using Design- Expert (version ...Each MCM-41 synthesis contained four cycles with total of 64 runs conducted for the factorial ...
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Applications of mesoporous silica materials in food – a review
... The use of nanoparticles to attach enzymes was reported in the late 1980s (Wang 2009; Richards & Cloete 2010). Since then, materials of various compositions, shapes, structures, and modified surfaces have been used ...
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Synthesis and Characterization of Functionalized Se-Mcm-41 A New Drug Carrier Mesopore Composite
... selenium-functionalized MCM- 41 mesoporous hybrid material in which nano- selenium was covalently bonded to the framework of MCM-41 by 3-(Triethoxysilyl)-propylamine ...
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Biofunctional Nb/Ti-MCM-41 catalyst in oxidative acidic reaction of cyclohexene to diol
... Mesoporous molecular sieves (MMS) have attracted a great deal of world -wide attention among researches in the fields of inorganic synthesis, functional materials, and heterogeneous catalysis, due to their regular pore ...
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