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Conversion of butyronitrile to butylamines on noble metals: Effect of solvent on catalyst activity and selectivity
(Royal Society of Chemistry, 2014-07)
The liquid-phase hydrogenation of butyronitrile to butylamines was studied on Pt(0.27%)/SiO2, Pd(0.33%)/SiO2 and Ru(1.80%)/SiO2 using n-butanol, toluene and cyclohexane as solvents. In n-butanol, Pt and Pd catalysts formed ...
Efficiency of ethanol conversion induced by controlled modification of pore structure and acidic properties of alumina catalysts
(Elsevier Science, 2011-05)
Bimodal porous alumina catalysts with both continuous macropores and mesopores were prepared using a dual soft template method. The addition of decahydronaphthalene as emulsifier agent successfully contributed to the ...
Impact of solvent on Co/SiO2 activity and selectivity for the synthesis of n-butylamine from butyronitrile hydrogenation
(Elsevier, 2015-03)
The impact of solvent on Co(9.8%)/SiO2 activity and selectivity for the synthesis of n-butylamine from the liquid-phase butyronitrile hydrogenation was investigated at 373 K and 13 bar using methanol, benzene, toluene and ...
Nb-containing hematites Fe2-xNbxO3: The role of Nb5+ on the reactivity in presence of the H2O2 or ultraviolet light
(Elsevier B.V., 2009-03-31)
A series of Nb-containing hematites, Fe-2-xNbxO3 (%Nb = 0.00, 1.49, 5.00 and 9.24) was prepared using the conventional co-precipitation method. Mossbauer and temperature-programmed reduction (TPR) measurements suggested ...
Efeito da ultra-estabilização da zeolita Y no hidro-craqueamento de óleo de soja bruto
(UFPR, 2014)
As an alternative to fossil fuel consumption, there is the possibility of producing fuels from renewable biomass such as soybean oil. By catalytic hydrocracking process, fuels and petrochemical ...
Nb-containing hematites Fe2-xNbxO3: The role of Nb5+ on the reactivity in presence of the H2O2 or ultraviolet light
(Elsevier B.V., 2009-03-31)
A series of Nb-containing hematites, Fe-2-xNbxO3 (%Nb = 0.00, 1.49, 5.00 and 9.24) was prepared using the conventional co-precipitation method. Mossbauer and temperature-programmed reduction (TPR) measurements suggested ...
Effects of crystal size, acidity, and synthesis procedure on the catalytic performance of gallium and aluminum MFI zeolites in glycerol dehydration
(2016-10-01)
The influence on gas-phase catalytic glycerol dehydration of crystal size (S: small, or L: large crystals), acidity, and synthesis procedure for isomorphous incorporation of gallium (Ga-S; Ga-L) or aluminum (Al-S; Al-L) ...
Sulfated tin oxide with macro- and mesopores controlled using an integrated sol-gel and surfactant template route
(2019-12-20)
Sulfated tin oxide was synthesized by a sol-gel process and pores were formed in the ceramic powders using Pluronic F-127 as a soft template. Sulfate ions linked to the tin oxide promoted the formation of acid sites on the ...
Sol-gel synthesis of nanocrystalline MgO and its application as support in Ni/MgO catalysts for ethanol steam reforming
(2021-03-15)
This work reports the improved catalytic activity of nickel catalysts supported on nanocrystalline magnesium oxide prepared by a sol–gel method, using Pluronic P123 as a structure-directing agent for pore formation. The ...
Controlling the porosity and crystallinity of MgO catalysts by addition of surfactant in the sol-gel synthesis
(2018-01-01)
This study presents an easy route to induce pore formation, increase the specific surface area and control the crystallite size of magnesium oxides obtained using the sol-gel method with addition of Pluronic P123 surfactant. ...