Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Wilma de A. Gonzalez"'
Autor:
Claudia V. Lacerda, Livia C. T. Lacerda, Alexandre A. de Castro, Tanos C. C. França, Teodorico C. Ramalho, Nadine Essayem, Wilma de A. Gonzalez
Publikováno v:
Química Nova, Vol 42, Iss 7, Pp 745-751
Keggin heteropolyacids (HPW) supported on niobia have been considered for both homogeneous and heterogeneous catalysis due to its special features, like the strong Brönsted acidity, low volatility, high activity and high selectivity for various reac
Externí odkaz:
https://doaj.org/article/b1f11ae1a0c84475af83a311d0fd8ee9
Autor:
Solange Francisco do Nascimento, Antônio José do Nascimento Dias, Guilherme Magliano da Silva, Hugo de Souza Caldeira, Luís Henrique Leme Louro, Wilma de Araújo Gonzalez
Publikováno v:
Materials Research, Vol 21, Iss 3 (2018)
The precursor sols of Al2O3 and mixed NbxOy/Al2O3 oxides were synthesized by the sol-gel process using acetylacetone to control the reaction kinetics of the organometallic oxides in the mixture. The layers of the precursor sols of Al2O3 and NbxOy/Al2
Externí odkaz:
https://doaj.org/article/a6c0a97256a44db0872464de05f48a47
Autor:
Marco Antonio Utrera Martines, Larissa Souza Mendes, Juliana Jorge, Gustavo Rocha de Castro, Nídia Maria Ribeiro Pastura, Cinthia Fraga Scofield, Wilma de Araújo Gonzalez
Publikováno v:
Orbital: The Electronic Journal of Chemistry, Vol 1, Iss 2, Pp 193-202 (2009)
The influence of the fat chain length of sorbitan surfactant was systematically explored, especially its influence on the material pore size. Then, mesoporous silica was synthesized according to a two-step process that provides intermediary stable hy
Externí odkaz:
https://doaj.org/article/fc6bb3212d88441fa6266b58248f9c4f
Autor:
Lucia Regina Raddi de Araujo, Cynthia Fraga Scofield, Nídia Maria Ribeiro Pastura, Wilma de Araujo Gonzalez
Publikováno v:
Materials Research, Vol 9, Iss 2, Pp 181-184 (2006)
Al2O3 and H3PO4/Al2O3 catalysts were investigated in the conversion of oleic acid to biofuels and biolubricant at 1 atm and at 623 K. The catalytic tests were performed in a fixed bed and continuous flow reactor, using an oleic acid-catalyst ratio of
Externí odkaz:
https://doaj.org/article/10c17d772d614a69b3aee3a441f3fb4b
EVALUATION OF THE NA/NB2O5 SYSTEM IN THE TRANSESTERIFICATION OF SOYBEAN OIL FOR BIODIESEL PRODUCTION
Autor:
Wilma de Araujo Gonzalez, Luiz E.P. Borges, Edilson Simões Cadaxo Sobrinho, Rogerio Antonio Sartori, Nelson Consolin-Filho, Andrea Maria Duarte De Farias, Anelise Maria Regiani, Carlos Eduardo Garção de Carvalho
Publikováno v:
Eclética Química, Vol 39, Iss 1, Pp 35-48 (2018)
Biodiesel is considered an important substitute of diesel oil. Traditionally, it is obtained by the transesterification of vegetable oils with methanol or ethanol, catalyzed by NaOH or KOH. Heterogeneous catalysts have been studied with the aim at fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::564cbbdfdc4fb9bd39cde2f2e4a561a1
https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/78
https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/78
Autor:
Marcelo Henrique Prado da Silva, Rubens Lincoln Santana Blazutti Marçal, Nadia M. E. Ayad, André Ben-Hur da Silva Figueiredo, Daniel Navarro da Rocha, Wilma de Araujo Gonzalez
Publikováno v:
Key Engineering Materials. 720:252-256
Bioactive glasses have widely used in biomedical applications such as bone filler due to their excellent biocompatibility, bioactivity and osteoconduction characteristics. In this work, a silicate-rich glass was synthesized by the sol-gel method with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f647add789daddebb0f5a93dd39ec902
https://doi.org/10.4028/www.scientific.net/kem.720.252
https://doi.org/10.4028/www.scientific.net/kem.720.252
Publikováno v:
Green Processing and Synthesis, Vol 5, Iss 4, Pp 353-364 (2016)
The basicity required for the aqueous-phase selective oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid (FDCA) is explored through different approaches. Homogeneous hydroxides were tested along with a Pt/ZrO2 catalyst to establish a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec795330c20508b32489847d9da59744
https://doaj.org/article/5722b88f2ed146028600ff880f6cd5d0
https://doaj.org/article/5722b88f2ed146028600ff880f6cd5d0
Autor:
Pedro Ribeiro Fontes, M. C. T. Damaso, Claudia Maria Campinha dos Santos, Wilma de Araujo Gonzalez, Clenilson Martins Rodrigues, P. P. K. G. Costa, José Antônio de Aquino Ribeiro, Patrícia V. Abdelnur
Publikováno v:
Analytical Methods. 8:2048-2057
Crude glycerol is a by-product of biodiesel production and nowadays has low commercial value for chemical industries. Biotechnological processes may be used to transform this by-product into diverse value-added chemical compounds. In this context, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54f20c1b03450a254b86ad0727240b44
https://doi.org/10.1039/c5ay02625c
https://doi.org/10.1039/c5ay02625c
Autor:
Hugo de Souza Caldeira, Guilherme Magliano da Silva, Luis Henrique Leme Louro, Wilma de Araujo Gonzalez, Antônio José do Nascimento Dias, Solange Francisco do Nascimento
Publikováno v:
Materials Research, Volume: 21, Issue: 3, Article number: e20170525, Published: 16 APR 2018
Materials Research v.21 n.3 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 21, Iss 3 (2018)
Materials Research, Issue: ahead, Published: 16 APR 2018
Materials Research v.21 n.3 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 21, Iss 3 (2018)
Materials Research, Issue: ahead, Published: 16 APR 2018
The precursor sols of Al2O3 and mixed NbxOy/Al2O3 oxides were synthesized by the sol-gel process using acetylacetone to control the reaction kinetics of the organometallic oxides in the mixture. The layers of the precursor sols of Al2O3 and NbxOy/Al2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::970f85d0f12156fab88639ea63cd12cc
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000300035&lng=en&tlng=en
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000300035&lng=en&tlng=en
Autor:
Elizabeth R. Lachter, Tanos C. C. França, Wilma de Araujo Gonzalez, Adriana C. M. Barrios, Nadine Essayem, Roberto B. Sousa, Claudia V. Lacerda, Rodrigo O. L. Souza
Publikováno v:
Reaction kinetics, mechanisms and catalysis
Reaction kinetics, mechanisms and catalysis, Springer, 2018, 124 (1), pp.317-334. ⟨10.1007/s11144-018-1349-5⟩
Reaction kinetics, mechanisms and catalysis, Springer, 2018, 124 (1), pp.317-334. ⟨10.1007/s11144-018-1349-5⟩
In this study, Keggin type heteropolyacids (HPW) supported on niobia were prepared following two different methodologies, including the incipient wetness impregnation technique, and using water as a polar solvent. In methodology I, the support was im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f19fb36f31f61c7e59ce836ee10647a
https://hal.archives-ouvertes.fr/hal-01804993
https://hal.archives-ouvertes.fr/hal-01804993