immobilized molybdic acid on porous silica alumina hollow
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In one case perfluorinated Nafion or molybdic acid was enclosed in silica while the guanidine base catalyst 1 5 7-triazabicylco 4.4.0 dec-5-ene was covalently attached to a
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Tetsuo Umegaki Haruka Ogawa Kazuki Watanabe Shinobu Ohki Masataka Tansho Tadashi Shimizu Yoshiyuki Kojima. Immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen evolution from ammonia borane. International Journal of Hydrogen Energy. 2021. 46. 9.
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Immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen evolution from ammonia borane Tetsuo
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A method of making large particle size high purity dense silica is described. Tetraethylorthosilicate ethanol solution is added to a 2N ammonium hydroxide solution containing silicic acid having an average particle size of about 15 micrometers to form a precipitate followed by a digestion of the precipitate in the solution. The precipitate is filtered through a screen having 45 micrometer
Get PriceOne‐Dimensional Nanostructured Polyaniline Syntheses
Introduction. Since the first report by Kaner s group 1 that polyaniline (PANI) nanofibers with a diameter of 30–50 nm and a length of 500 nm to several micrometers can be facilely synthesized by an interfacial polymerization and showed significantly improved performance for gas sensing great interest has been aroused in the area of one‐dimensional nanostructured polyaniline (1D nano
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Immobilized molybdic acidPorous silica-alumina hollow sphere particlesHydrolytic hydrogen generationAmmonia borane 2020 / International Journal of Hydrogen Energy This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic
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This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen generation from ammonia borane. The main component of the immobilized molybdic acid was mainly heptamolybdic acid with molybdic tetraoxide acid as the minor component.
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Apr 17 2009 · Nayeem Ahmed and Zeba N. Siddiqui Silica molybdic acid catalysed eco-friendly three component synthesis of functionalised tetrazole derivatives under microwave irradiation in water RSC Advances 5 22 (16707) (2015).
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The present invention relates to an improved process for preparing mono and poly epoxy functionalized fatty acids their esters and mixtures thereof using solid catalyst i.e. supported group VIb metal oxide said support comprising silica alumina and mixtures thereof optionally with a promoter from group VA wherein the group VIB metal oxide content in the catalyst is 5-20 wt of support.
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Immobilized molybdic acidPorous silica-alumina hollow sphere particlesHydrolytic hydrogen generationAmmonia borane 2020 / International Journal of Hydrogen Energy This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic
Get PriceUSB2Process for the epoxidation of fatty acids
The present invention relates to an improved process for preparing mono and poly epoxy functionalized fatty acids their esters and mixtures thereof using solid catalyst i.e. supported group VIb metal oxide said support comprising silica alumina and mixtures thereof optionally with a promoter from group VA wherein the group VIB metal oxide content in the catalyst is 5-20 wt of support.
Get PriceAtomic layer deposition of MoO 3 on mesoporous γ-Al 2 O 3
MoOx/Al2O3 based catalyst has long been widely used as an active catalyst in Oxidative Desulfurization reaction due to its high stability under severe reaction conditions and high resistance to sulfur poisoning. In this context 4 and 9 Wt. MoO3 grafted on mesoporous γ-Al2O3 has been synthesized using the modified atomic layer deposition (ALD) method.
Get PriceThe preparation and application of mesoporous materials
This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen generation from ammonia borane. The main component of the immobilized molybdic acid was heptamolybdic acid with molybdic tetraoxide as the minor component.
Get PriceSynthesis of non-siliceous mesoporous oxidesChemical
Hierarchical mesoporous metal oxides have been synthesized by such a dual-templating method including titania 28 niobia 28 and silicaalumina. 108 Infiltration of the polymeric scaffold is also possible using plain porous PS films as templates allowing formation of TiO 2-based pillared structures with hierarchical mesoporosity 109 or
Get PriceImmobilized molybdic acid on porous silica-alumina hollow
This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen generation from ammonia borane. The main component of the immobilized molybdic acid was heptamolybdic acid with molybdic tetraoxide as the minor component.
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Tetsuo Umegaki Haruka Ogawa Kazuki Watanabe Shinobu Ohki Masataka Tansho Tadashi Shimizu Yoshiyuki Kojima. Immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen evolution from ammonia borane. International Journal of Hydrogen Energy. 2021. 46. 9.
Get PriceMultifunctional Mesoporous Silica Nanocomposite
Immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen evolution from ammonia borane. International Journal of
Get Price(PDF) (Advanced Material Series) Ashutosh Tiwari Lokman
(Advanced Material Series) Ashutosh Tiwari Lokman Uzun Advanced Functional Materials Wiley Scrivener (2015)
Get PriceUSAFixation by anion exchange of toxic materials
This invention relates to the immobilization of toxic e.g. radioactive materials internally in a silicate glass or silica gel matrix for extremely long periods of time. Toxic materials such as radioactive wastes containing radioactive anions and in some cases cations which may be in the form of liquids or solids dissolved or dispersed in liquids or gases are internally incorporated
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Hydrorefining catalyst contains 0.1 to 25 wt in total of at least one hydrogenation active metal element selected from elements of Group 6 Group 8 Group 9 and Group 10 of the Periodic Table and 0.1 to 3 wt potassium on a carrier formed of porous inorganic oxide. The concentration distribution of the hydrogenation active metal element is higher in the central part than in the peripheral
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Dec 01 1990 · Immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen evolution from ammonia borane. 2021 International Journal of Hydrogen Energy. Download PDF View details.
Get PriceThe chemistry of silica sol-gelUFDC Home
The so called "di-phasic" ceramics are a good illustration of the process resulting in the photosensitive gels 43-46 . Mechanical properties can be improved by adding to a sol a filler such as silica or alumina powder 47 48 fibers or whiskers 49-521 or in-situ pyrolysis of organic precursors into a porous
Get PriceTeruo SHIMIZU Teikyo University Tokyo Department of
This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen generation from ammonia
Get Price(PDF) Carbonylation-Heterogeneous Alexander Stepanov
Phosphoric acid (1 2) silico-tungstic acid (2) and ZnCl 2 (2 3) supported on activated charcoal or silico-tungstic acid silico-molybdic acid and phospho-tungstic acid impregnated on silica gel (4) were used as the catalysts. Conditions of the carbonylation process were extremely severe (500
Get PriceTeruo SHIMIZU Teikyo University Tokyo Department of
This work presented influence of preparation conditions on immobilized molybdic acid on porous silica-alumina hollow sphere particles for acid-promoted hydrolytic hydrogen generation from ammonia
Get PriceCatalytic Isomerization of Biomass‐Derived Aldoses A
The epimerization takes place under mild reaction conditions that is the reaction equilibrium in 10–20 wt aqueous solution of a substrate is usually reached after 2–6 h at 70–90 °C by utilizing 0.1–0.2 molybdic acid. 106 The reaction is very sensitive to the pH of the solution and the highest epimerization rate is obtained in
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