Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Rochel Montero Lago"'
Autor:
Elimar Pires Vasconcellos, Priscila Maria Teixeira Gonçalves de Souza, Marcella Rocha Franco, Vinícius Gomide de Castro, Lorena Viana Souza, Rochel Montero Lago, Marcelo Gomes Speziali
Publikováno v:
Química Nova, Vol 44, Iss 3, Pp 377-384 (2021)
Externí odkaz:
https://doaj.org/article/449b70cafe234ed3ba058609f831b481
Autor:
Marcio Jose da Silva, Neide Paloma Gonçalves Lopes, Fabiane Carvalho Ballotin, Ana Paula de Carvalho Teixeira, Rochel Montero Lago
In this work, an efficient renewable carbon catalyst obtained by sulfonation of bio-oil was used for the first time to produce terpene acetals by condensation of β-citronellal with alkyl alcohols (methyl, ethyl, propyl, butyl, isopropyl) at room tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fa500a6df4558cb1cc4ed42c7f4b709
https://doi.org/10.21203/rs.3.rs-2552820/v1
https://doi.org/10.21203/rs.3.rs-2552820/v1
Autor:
Aluir Purceno, Matheus Duarte, Luiz Cláudio de Melo Costa, Simone Pires Bueno, Guilherme Gomes, Rochel Montero Lago
Publikováno v:
Química Nova, Vol 39, Iss 4, Pp 507-512 (2016)
In this work, chemists with experience in different areas of industry and academy raised some important issues in career planning to help undergraduate chemistry students to get prepared for the future professional life.
Externí odkaz:
https://doaj.org/article/cf780d2c379c4d43be249692c63ce784
Autor:
Rochel Montero Lago, Ana Paula C. Teixeira, Ottávio Carmignano, Sara Silveira Vieira, Alexandre C. Bertoli, Mayra Aparecida Nascimento, Fabiane Carvalho Ballotin
Publikováno v:
International Journal of Minerals, Metallurgy and Materials. 27:46-54
In this work, different magnesium silicate mineral samples based on antigorite, lizardite, chrysotile (which have the same general formula Mg3Si2O5(OH)4), and talc (Mg3Si4O10(OH)2) were reacted with KOH to prepare catalysts for biodiesel production.
Publikováno v:
Química Nova, Vol 34, Iss 6, Pp 1079-1084 (2011)
In this work, it is proposed a simple experiment in polymer science for undergraduates, involving the glycerol polymerization catalyzed by H2SO4 to produce different materials, e.g. from oligomers to crosslinked polymer. The students can investigate
Externí odkaz:
https://doaj.org/article/873178763cc14c15bd0db8d7d3b9bb77
Publikováno v:
Química Nova, Vol 33, Iss 6, Pp 1379-1383 (2010)
In this work, a TPR (Temperature Programmed Reduction) system is used as a powerful tool to monitor carbon nanotubes production during CVD (Chemical Vapour Deposition), The experiments were carried out using catalyst precursors based on Fe-Mo support
Externí odkaz:
https://doaj.org/article/254d4b07690e4e9281ae2aa8c25d582d
Autor:
Cecilia Solar, Fabiana Sardella, Cristina Deiana, Rochel Montero Lago, Andrea Vallone, Karim Sapag
Publikováno v:
Materials Research, Vol 11, Iss 4, Pp 409-414 (2008)
A series of activated carbons (AC) were prepared from waste of the olive oil production in the Cuyo Region, Argentine by two standard methods: a) physical activation by steam and b) chemical activation with ZnCl2. The AC samples were characterized by
Externí odkaz:
https://doaj.org/article/267b4ecb88b24c338ca903a2256fbac3
Publikováno v:
Materials Research, Vol 11, Iss 3, Pp 307-312 (2008)
In this work two perovskites were prepared: LaMn1-xFe xO3, and LaMn0.1-x Fe0.90Mo xO3. XRD and Mössbauer spectroscopy suggest the formation of pure phase perovskite with the incorporation of Fe and Mo in the structure. The catalytic activity of thes
Externí odkaz:
https://doaj.org/article/4b917df1af684d7e8a6f772dd1fbad46
Autor:
Juliana Cristina Tristão, Márcio César Pereira, Flávia Cristina Camilo Moura, José Domingos Fabris, Rochel Montero Lago
Publikováno v:
Materials Research, Vol 11, Iss 2, Pp 233-238 (2008)
In this work, controlled reduction of perovskites supported on Al2O3 was used to prepare thermally stable nanodispersed iron catalysts based on Fe0/La2O3/Al2O3. The perovskites composites LaFe0.90Mn0.08Mo0.02O3(25, 33 and 50 wt (%)) /Al2O3 and LaFe0.
Externí odkaz:
https://doaj.org/article/1bd145a010a64d679c49df9c34e74f66
Publikováno v:
Química Nova, Vol 30, Iss 6, Pp 1480-1483 (2007)
Externí odkaz:
https://doaj.org/article/4f41599c24994888ac104647e24f4bf7