Zobrazeno 1 - 10
of 190
pro vyhledávání: '"Antonio S. Araujo"'
Autor:
Joana M. F. Barros, Glauber J. T. Fernandes, Marcio D. S. Araujo, Dulce M. A. Melo, Amanda D. Gondim, Valter J. Fernandes, Antonio S. Araujo
Publikováno v:
Nanomaterials, Vol 13, Iss 3, p 382 (2023)
The nanostructured lanthanide-silica materials of the Ln–SiO2 type (Ln = La, Ce, Pr, Nd, Eu, Gd, Dy, Yb, Lu) were synthesized by the hydrothermal method at 100 °C, using cetyltrimethylammonium as a structural template, silica gel and sodium silica
Externí odkaz:
https://doaj.org/article/6747efe76b3b4dc2bb13bf0ef522b7af
Autor:
Lidiane A. Morais, Francisco L. Castro, Glauber J.T. Fernandes, Marcio D.S. Araujo, Mirna F. Farias, Ana P.M.A. Guedes, Valter J. Fernandes Jr, Antonio S. Araujo
Publikováno v:
Catalysis Research. :1-12
The TiO2/MCM-41 nanomaterials were synthesized by impregnation with an excess solvent with different percentages of titanium dioxide. They were used for catalytic degradation of Benzene Toluene Ethylbenzene and Xylenes (BTEX) in the presence of hydro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19df89293bc586fc5aa40a9c80f67f71
https://doi.org/10.21926/cr.2302017
https://doi.org/10.21926/cr.2302017
Publikováno v:
Eclética Química, Vol 31, Iss 2, Pp 39-43 (2018)
The dehydration kinetic of Yb, Lu and Y 4-chlorobenzylidenepyruvate was studied by using thermogravimetry and the kinetics parameters obtained by Flynn and Wall method suggest that the dehydration step follows a first order mechanism. The activation
Externí odkaz:
https://doaj.org/article/0a11d427c97543a4b5e1bf22d3450948
Autor:
Gidiângela C. C. S. Lima, Mariele I. S. Mello, Lindiane Bieseki, Antonio S. Araujo, Sibele B. C. Pergher
Publikováno v:
Molecules, Vol 26, Iss 23, p 7366 (2021)
Silicoaluminophosphate molecular sieves of SAPO-11 type (AEL structure) were synthesized by the hydrothermal method, from the residue of a fluorescent lamp as a source or Si, Al, and P in the presence of water and di-propyamine (DPA) as an organic te
Externí odkaz:
https://doaj.org/article/13e0cc54f9f64a53ab10b747b89ac896
Autor:
Renilson O. Mapele, Antonio O. S. Silva, Marcelo J. B. Souza, Anne M. G. Pedrosa, Ana C. F. Coriolano, Glauber J. T. Fernandes, Valter J. Fernandes, Antonio S. Araujo
Publikováno v:
Applied Sciences, Vol 11, Iss 14, p 6544 (2021)
The hydrothermal synthesis of aluminophosphate molecular sieve type AlPO4-11 was processed from chemicals containing psueudobohemite, 85% phosphoric acid, water, and di-isopropylamine as templating agent. The crystallization of the samples was studie
Externí odkaz:
https://doaj.org/article/fa39983e5b4c458f83eed87c016f6389
Autor:
Vinícius P. S. Caldeira, Anne G. D. Santos, Sibele B. C. Pergher, Maria J. F. Costa, Antonio S. Araujo
Publikováno v:
Química Nova, Vol 39, Iss 3, Pp 292-297 (2016)
To understand the physicochemical properties and catalytic activity during the pyrolysis of atmospheric petroleum residue, a template-free ZSM-5 zeolite was synthesized using a direct method without additional seeds or an organic structure director a
Externí odkaz:
https://doaj.org/article/cf9d96a8125444fc8bb0f81f9573f7b5
Autor:
Ana C. F. Coriolano, Giorgione G. Cabral, Sibele B. C. Pergher, Valter J. Fernandes, Antonio S. Araujo, Marcio D. S. Araujo, Jilliano B. Silva, Vinícius P. S. Caldeira
Publikováno v:
Petroleum Science and Technology. :1-14
The preparation, characterization and application of materials based on montmorillonite natural clay containing aluminum polyhydroxocomplexes of Keggin type ions (Al13) as intercalating agent and h...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48567a0f2aeb07e737231bf810f0c9ad
https://doi.org/10.1080/10916466.2021.1961804
https://doi.org/10.1080/10916466.2021.1961804
Synthesis, Characterization, and Photonic Efficiency of Novel Photocatalytic Niobium Oxide Materials
Publikováno v:
Global Challenges, Vol 1, Iss 9, Pp n/a-n/a (2017)
Abstract The application of niobium oxides as photocatalytic materials for the removal of contaminants is scarcely reported in the literature. This work reports the methodology to synthesize four different mesoporous niobium oxide materials and the c
Externí odkaz:
https://doaj.org/article/50de88e192bf43aea635e5a5727447b4
Autor:
Jean Robert P. Rodrigues, Mírian de Lurdes N. M. Mello, Marco Antonio Eid, Tiago do E. S. B. Nevez, Antonio S Araujo Junior, José R. P. Rodrigues
Publikováno v:
Acta Scientiarum: Technology, Vol 36, Iss 4, Pp 623-628 (2014)
In spite of technological importance of solidification of metallic alloys under radial heat flow, relatively few studies have been carried out in this area. In this work the solidification of Al 4.5 wt% Cu cylinders against a steel massive mold is an
Externí odkaz:
https://doaj.org/article/3af15cfdcba0496988bfa062efc11ea3
Autor:
Aruzza Mabel de Morais Araújo, Valter J. Fernandes, Ana Priscila Alves, Amanda Duarte Gondim, Antonio S. Araujo, N. A. Santos, João Leonardo Freitas Oliveira, Luana Márcia Bezerra Batista
Publikováno v:
Renewable Energy. 168:1377-1387
The vast majority of fuels used today are derived from non-renewable sources, causing climate change on the planet. In addition to the problems caused by these energy sources, there are processes for the refining of raw material, such as oil, where h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14aa050d1485f25da0464ba3358d74e2
https://doi.org/10.1016/j.renene.2020.12.098
https://doi.org/10.1016/j.renene.2020.12.098