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Synthesis of n-Butylamine from Butyronitrile on Ni/SiO2: Effect of Solvent
(Sociedade Brasileira de Química, 2014-06)
The effect of solvent on Ni(10.5%)/SiO2 activity and selectivity for the liquid-phase conversion of butyronitrile to butylamines was studied using ethanol, benzene, toluene and cyclohexane as solvents. In ethanol, a protic ...
Effect of the Pt–Pd molar ratio in bimetallic catalysts supported on sulfated zirconia on the gas-phase hydrodechlorination of chloromethanes
(Academic Press Inc Elsevier Science, 2017-08)
Bimetallic Pt:Pd catalysts with different molar ratios and 0.5 wt.% overall metal load supported on sulfated zirconia catalysts were synthesized and tested in the gas-phase hydrodechlorination (HDC) of chloromethanes and ...
Mixed oxides tuned with alkaline metals to improve glycerolysis for sustainable biodiesel production
(Elsevier Science, 2017-01)
In this study, monoglycerides were produced as glycerol value-added products via transesterification reaction of methyl stearate. This green and selective process involved catalysis from hydrotalcite-like compounds with ...
Catalytic evaluation of perovskite-type oxide LaNi1xRuxO3 in methane dry reforming
(2008)
The methane reforming with carbon dioxide (dry reforming) has been proposed as one of the most promising technologies for producing
hydrogen by the use of two greenhouse gases. However, undesirable coke formation is the ...
Zeólitas ácidas aplicadas na esterificação catalítica
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2019-03-08)
With respect the sugarcane sector expansion in Brazil, significant quantities of by-products have been generated, among them the fusel oil with potential for reuse due to the high volume produced and its rich isopentanol ...
Statistical analysis of the influence of synthesis conditions on the properties of hierarchical zeolite Y
(Elsevier, 2021-06)
Commercial zeolite USY (CBV500, Si/Al = 2.6) was dealuminated with oxalic acid, desilicated with ammonium hydroxide assisted by cetyltrimethylammonium bromide, and acid washed with lactic acid for obtaining hierarchical ...
Effect of nickel loading on hydrogen adsorption capacity of different mesoporous supports
(Springer, 2019-10-03)
Pure siliceous and aluminosilicate mesoporous molecular sieves of MCM-41 type have been used as support for nickel incorporation (2.5 wt%) by wet impregnation method. The hydrogen adsorption capacities at 77 K of these ...
Study of the citral/acetone reaction on MgyAlOx oxides: Effect of the chemical composition on catalyst activity, selectivity and stability
(Elsevier Science, 2008-08)
The liquid-phase citral/acetone reaction was studied on MgO, Al2O3 and MgyAlOx mixed oxides with Mg/Al molar ratios of 0.11-3. The density, strength and nature of surface acid sites were determined by NH3 thermodesorption ...
Coupling of Acetaldehyde to Crotonaldehyde on CeO 2-x (111): Bifunctional Mechanism and Role of Oxygen Vacancies
(American Chemical Society, 2019-04)
Selective C-C coupling of oxygenates is pertinent to the manufacture of fuel and chemical products from biomass and from derivatives of C 1 compounds (i.e., oxygenates produced from methane and CO 2 ). Here we report a ...
Thermo-chemically tuning of active basic sites on nanoarchitectured silica for biodiesel production
(Elsevier B.V., 2018-09-01)
In the design of catalysts, an extremely important point is to determine, control and increase the availability of active sites on the surface. In the present work, active sodium oxide species have been identified and it ...