Buscar
Mostrando ítems 1-10 de 170
Butanol synthesis from ethanol over CuMgAl mixed oxides modified with palladium (II) and indium (III)
(2018-08-01)
Ethanol conversion to butanol was investigated over mixed oxides derived from hydrotalcites modified with copper, palladium or indium. The reaction was carried out in the 403–573 K temperature range using stainless steel ...
Emulsion-mediated synthesis of hierarchical mesoporous-macroporous Al-Mg hydrotalcites
(2017-03-01)
A new sol-gel method mediated by the use of paraffin emulsions is presented for the synthesis of hierarchical mesoporous-macroporous Al-Mg hydrotalcites. Prior to the synthesis, the construction of ternary diagrams for ...
Influence of molar fraction of Mg/Al, on the electrochemical behavior of hycrotalcite-epoxy-graphite composites
(Elsevier B.V., 2020-10-01)
The layered structure of hydrotalcite-like compounds is responsible for many chemical and physical properties attractive in designing electrodes for analytical applications. Mg/Al hydrotalcite-like materials were prepared ...
Potassium-containing hydroxylated hydrotalcite as efficient catalyst for the transesterification of sunflower oil
(Springer, 2018-09)
Different hydrotalcite-based materials were evaluated as heterogeneous catalysts for the transesterification of sunflower oil with methanol. A set of compounds based on magnesia-alumina structures (MgAl hydrotalcites) were ...
METAL OXIDES FROM LIKE-HYDROTALCITES MATERIALS MODIFIED WITH Ga3+ AS CATALYSTS FOR ETHYL BIODIESEL SYNTHESIS
(Soc Brasileira Quimica, 2017-06-01)
The synthesis of like-hydrotalcites materials (layered double hydroxides-LDHs) with molecular formula MgxMy3+(CO3)(OH)(16) 4H(2)O in different ratios Mg2+/M3+ where M3+ is Al3+, Ga3+ or both was carried out by the ...
Evaluation of boron removal from water by hydrotalcite-like compounds
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)
Acid removal from crude oils by catalytic esterification naphthenic acid catalize by Mg/Al hydrotalcite
(Elsevier Science, 2019-10)
The presence of relatively high levels of naphthenic acids in crude oil may cause serious corrosion problem at temperature between 200 °C and 400 °C. One of the viable processes for decreasing acidity is the esterification ...
Co/Mg/Al hydrotalcite-type precursor, promoted with La and Ce, studied by XPS and applied to methane steam reforming reactions
(ELSEVIER SCIENCE BV, 2009)
Catalysts` precursor of Co/Mg/Al promoted with Ce and La were tested in the steam reforming of methane (SRM). The addition of promoters was made by anion-exchange. The oxides characterization was made by X-ray Photoelectron ...