Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Cláudia O. Veloso"'
Autor:
Cláudia O. Veloso, Cristiane A. Henriques, Ayres G. Dias, Evanoel C. de Lima, Bianca M. Souza, José Luiz F. Monteiro
Publikováno v:
Química Nova, Vol 34, Iss 4, Pp 617-620 (2011)
The catalytic behavior of Cs-exchanged and Cs-impregnated zeolites (X and Y) was studied using the Knoevenagel condensation between glyceraldehyde acetonide and ethyl acetoacetate in order to produce the corresponding α,β-unsaturated carbonyl compo
Externí odkaz:
https://doaj.org/article/0609e1f996414df6861ae5cfb1398210
Publikováno v:
Catalysis Today. 381:108-117
Bioethanol is a green alternative to supply the demand for light olefins (ethylene and propylene) and aromatics (benzene, toluene, and xylenes) that can have a green label. ZSM-5 zeolite is largely used to produce light olefins and aromatics from eth
Autor:
Aline Machado de Castro, Erika de Queiros Eugenio, Marcos L. Dias, Cláudia O. Veloso, Marta A. P. Langone, Ivone Sampaio Pereira Campisano
Publikováno v:
Brazilian Journal of Chemical Engineering. 38:549-562
Aliphatic polyesters are widely used in biomedical and environmental areas, and their use has grown due to environmental issues. The use of lipases as catalysts for the synthesis of polyesters is an environmentally benign alternative. In this work, t
Autor:
Erika de Queiros Eugenio, Aline Machado de Castro, Marta A. P. Langone, Cláudia O. Veloso, Ivone Sampaio Pereira Campisano, Danielle Simas de Queiroz
Publikováno v:
Brazilian Journal of Development. 6:83811-83824
Publikováno v:
Catalysis Letters. 150:738-752
Ethanol is an alternative for producing petrochemicals, especially propylene and aromatics (benzene, toluene, and xylenes). To understand ethanol processing routes into olefins and aromatics, it is interesting to use ethylene that is the major primar
Autor:
Marta A. P. Langone, Danielle Simas de Queiroz, Aline Machado de Castro, Nathália G. Duarte, Cláudia O. Veloso
Publikováno v:
Chemical Engineering Communications. 207:177-184
Butyl acetate is a versatile chemical due to its excellent solvency for polymers, resins, and oils. In this work, the butyl acetate synthesis was studied by the esterification of n-butanol ...
Publikováno v:
Molecular Catalysis. 458:261-271
New routes for transforming biomass-derived glycols into value-added products through innovative catalytic processes are of great relevance in the chemical industry. The etherification of these glycols with alkyl alcohols is a process to produce oxyg
Publikováno v:
Applied Catalysis A: General. 548:2-15
Platform molecules, such as glycerol, which is a by-product from biodiesel production, have been used to produce fuels and chemicals. A possibility to increase glycerol added value is through its transformation into ethers. In this work, the catalyti
Autor:
W.C. Souza, Sandra S.X. Chiaro, Luana Ventura Baia, Marco Antonio Gaya de Figueiredo, Cláudia O. Veloso, Ricardo José Faustino de Souza
Publikováno v:
Energy & Fuels. 31:11731-11742
Stringent specifications for sulfur compounds content and the need to use oils with large amount of nitrogen compounds are challenges for fuel producers. Adsorption is an alternative process to remove sulfur and nitrogen compounds and clays are promi
Publikováno v:
Renewable Energy. 99:543-552
Mixed oxides are widely used as catalyst in biodiesel production. The synthesis of these materials is mostly performed through co-precipitation using a basic solution as precipitating agent. The presence of residual alkali metals in the catalyst is a