γ alumina
New generation biofuel: continuous acidogenesis of sucrose-raffinose mixture simulating vinasse is promoted by γ-alumina pellets
... of γ-alumina in the acidogenesis of glucose [13] and under conditions favoring butyric acid production in the same fermentation of glucose medium ...by γ-alumina, as compared with free cells ...
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Property and Performance of CuO/γ-Alumina Nanocomposites for the Oxidation of Volatile Organic Compounds
... When the oxidant was changed to hydrogen peroxide, the oxidation occurred on the double bond and cyclohexene oxide obtained as the main product. Although both TBHP and H 2 O 2 oxidize cyclohexene in the presence of CuO ...
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Biofuel production from nyamplung oil using catalytic cracking process with Zn HZSM 5/ γ alumina catalyst
... at the temperatures higher than 450 °C the active sites of catalyst was decrease. This occurrence showed similarity with the type of HZSM-5 and Cu-HZSM-5 catalyst were used for palm oil cracking in producing biodiesel ...
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Cobalt Oxide Nanoparticles Supported on γ-Alumina as Catalysts in The Selective Oxidation of Alcohols in Aqueous Phase
... product (cyclohexanone) therefore, selectivity (%) is 100 with respect to it. The research results showed that three kinds of catalysts could catalyze cyclohexanol oxidation with TBHP. The activity of the catalysts was ...
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Sorption of phosphate onto mesoporous γ-alumina studied with in-situ ATR-FTIR spectroscopy
... adsorption, a constant slow adsorption rate was obtained, which was confirmed by the difference in the spectral intensities of two successive spectra (less than 2%). A small volume of concentrated phosphate stock ...
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Preparation and Characterization of High Specific Surface Area γ-Alumina Nanoparticles Via Sol-Gel Method
... prepared γ-alumina depends on extent of aggregation and dissolution of gel grains; so that aggregation of gel grains leads to formation of γ-alumina nanoparticles with higher specific surface ...
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Modified mesoporous Γ-alumina from kano kaolin in heterogeneous transesterification of rice bran oil
... using alumina as catalyst support for the production of biodiesel ...commercial alumina as support, as such little is known on the catalytic activities of mesoporous alumina synthesized from kaolin, ...
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Synthesis and Characterization of γ-Alumina Porous Nanoparticles from Sodium Aluminate Liquor with Two Different Surfactants
... of γ- and χ-alumina [8]. Up to now, the synthesis of γ-alumina nanopowders has been a longstanding goal and there are several methodologies existing for the synthesis of nano ...
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Adsorption studies of cyanide onto activated carbon and γ alumina impregnated with cooper ions
... In this research, adsorption of cyanide onto cata- lyst synthesized with activated carbon and γ- alumina used supported and cooper has been studied by means of batch technique. Percent- age adsorption was ...
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Combined Magnesia, Ceria and Nickel catalyst supported over γ-Alumina Doped with Titania for Dry Reforming of Methane
... methane include both noble metals such as Ru, Rh, or Pt, and first row transition metals like Ni, Fe, and Co. Although noble metals display high activity and stability, their limited availability and high price have made ...
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An Efficient, Solvent Free One Pot Synthesis of Tetra substitue dimidazoles Catalyzed by Nanocrystalline γ-alumina
... Benzil (1 mmol), substituted anilines (1 mmol), benzaldehyde (1 mmol), ammonium acetate (2 mmol), and 35 mg of γ-Al 2 O 3 NPs were mixed, stirred vigorously and heated on bare flame for 5-15 minutes. The progress ...
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SCREENING OF ANTIBACTRIAL ACTIVITY OF γ ALUMINA NANOPARTICLES SYNTHEZIED BY ELECTROCHEMICAL REDUCTION METHOD
... (ROS). Alumina nanoparticles exhibit antimicrobial ...the alumina particles may cause lowered antimicrobial activity and as a result even at higher concentration, the particles exhibit mild toxicity towards ...
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Investigation and Comparison of Fluoride Adsorption Behavior on a Hybrid Material Containing Zirconium Dioxide Coated on γ-Alumina (60 and 90) and Their Initial Precursor in Aqueous Solution
... as alumina, granular ceramic, zeolite, activated charcoal, carbonaceous, biosorbent, pyrophyllite, bauxite, chitosan and so on have been widely studied in recent years ...Activated alumina as an amphoteric ...
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γ Alumina Supported Ni Mo Carbides as Promising Catalysts for CO2 Methanation
... Table 2 shows the results of the integration of the CO2-TPD profiles for this series of catalysts, upon either reduction or carburization, whereas the CO2-TPD profiles acquired for the c[r] ...
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Production of γ Al2O3 from Kaolin
... for alumina, γ-alumina is one kind of extremely important nano sized ...that γ-alumina is thermo dy- namically stable relative to α-alumina when a critical surface area is ...
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Resistant in Alkaline Media Core-shell Photocatalyst of Fe(TiO2/ Al2O3) for Degradation of Water Pollutant
... of γ -alumina in the initial stage followed by layering TTiP on the catalyst in a sol-gel media as the second stage and a final calcination ...other. γ -alumina was the central core and the ...
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The Comparison of MgO and TiO2 Additives Role on Sintering Behavior and Microstructures of Reaction-Sintered Alumina-Zirconia-Mullite Composite
... In AMZ composites, corundum (alumina), mullite, zirconia (tetragonal and/or monoclinic phase) and minor amount of glassy phase are tailored in a way that improve thermo-mechanical and corrosion resistance ...
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Fabrication Of Alumina Crucible
... A detail understanding in fabrication of ceramic product i.e. alumina crucibles through slip casting process will be achieved from the research work. Two types of casting, which are drain casting and solid casting ...
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γ sets and γ continuous functions
... Remark 3.14. If any function is semi-open, then it is also γ -open. But the converse may not hold. Consider a function f : R → R defined by f (x) = 0 for all x ∈ R , where the real number set R with the usual ...
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Developement of ceramic cutting insert of alumina (Al2O3) and zirconia / zirconium oxide (ZrO2) for turning tool steel
... This project is undertaken with the aims to evaluate the effect of HIP and vacuum sintering process on the physical behaviour of composite ceramic part of alumina and zirconia with respect to shrinkage, hardness, ...
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