Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Sandro L, Barbosa"'
Autor:
Tassio Trindade Mazala, Mateus Costa Viana, Guilherme Carneiro, David Lee Nelson, Maria B. de Freitas-Marques, Bruno Spinosa De Martinis, Jacques Florêncio, Fernanda Marur Mazzé, Severino G. Domingos da Silva, Sandro L. Barbosa
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract The aim of this study was to produce an alcohol gel hand sanitizer containing green glycerol. Crude glycerol was purified using chemical and physical treatments. The sanitizer was prepared using 71.100 g of 99.3° GL ethanol, 28.0 g H2O, 0.5
Externí odkaz:
https://doaj.org/article/54fc815f0a8744e19c77185943994ab2
Autor:
Sandro L. Barbosa, David Lee Nelson, Lucas Paconio, Moises Pedro, Wallans Torres Pio dos Santos, Alexandre P. Wentz, Fernando L. P. Pessoa, Foster A. Agblevor, Daniel A. Bortoleto, Maria B. de Freitas-Marques, Lucas D. Zanatta
Publikováno v:
Bioengineering, Vol 10, Iss 6, p 692 (2023)
Red mud (RM) is composed of a waste alkaline solution (pH = 13.3) obtained from the production of alumina. It contains high concentrations of hematite (Fe2O3), goethite (FeOOH), gibbsite [Al(OH)3], a boehmite (AlOOH), anatase (Tetragonal–TiO2), rut
Externí odkaz:
https://doaj.org/article/321ae3a9fbdb4a87aacea3a2b2cf626a
Autor:
Sandro L. Barbosa, Milton de S. Freitas, Wallans T. P. dos Santos, David Lee Nelson, Stanlei I. Klein, Giuliano Cesar Clososki, Franco J. Caires, Adriano C. M. Baroni, Alexandre P. Wentz
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-5 (2021)
Abstract SiO2-SO3H, with a surface area of 115 m2/g, pore volumes of 0.38 cm3g−1 and 1.32 mmol H+/g, was used as a 10% w/w catalyst for the preparation of 5-hydroxymethyl-2-furfural (HMF) from fructose. A conversion of 100% was achieved in a microw
Externí odkaz:
https://doaj.org/article/3094e9a0a95f4ea386d5545fc64d58cd
Autor:
Sandro L. Barbosa, David Lee Nelson, Milton de S. Freitas, Wallans Torres Pio dos Santos, Stanlei I. Klein, Giuliano C. Clososki, Franco J. Caires, Alexandre P. Wentz
Publikováno v:
Molecules, Vol 27, Iss 15, p 4767 (2022)
SiO2–SO3H, with a surface area of 115 m2/g and pore volume of 0.38 cm3g−1, and 1.32 mmol H+/g was used as a 20% w/w catalyst for the preparation of methyl salicylate (wintergreen oil or MS) from acetylsalicylic acid (ASA). A 94% conversion was ac
Externí odkaz:
https://doaj.org/article/2fe4f21285db4cbd86a650f080532293
Autor:
Sandro L. Barbosa, Adeline C. Pereira Rocha, David Lee Nelson, Milton S. de Freitas, Antônio A. P. Fulgêncio Mestre, Stanlei I. Klein, Giuliano C. Clososki, Franco J. Caires, Danilo L. Flumignan, Letícia Karen dos Santos, Alexandre P. Wentz, Vânya M. Duarte Pasa, Regiane D. Fernandes Rios
Publikováno v:
Molecules, Vol 27, Iss 3, p 953 (2022)
SiO2-SO3H, with a surface area of 115 m2·g−1, pore volumes of 0.38 cm3·g−1 and 1.32 mmol H+/g, was used as a transesterification catalyst. Triglycerides of waste cooking oil reacted with methanol in refluxing toluene to yield mixtures of diglyc
Externí odkaz:
https://doaj.org/article/f1a62fedb370465bb7230a6495c8aad8
Autor:
Sandro L. Barbosa, Bruna K. Barbosa, Camila D. Lima, Alice L. Macedo, Jacqueline N. Mendonça, Giuliano C. Glososki, Norberto P. Lopes, Stanlei Ivair Klein
Publikováno v:
Eclética Química, Vol 41, Iss 1, Pp 54-59 (2018)
The ionic liquid 3-methylimidazolium hydrogensulfate is soluble within the glycerol phase that it creates, after catalyzing the transesterification of sunflower oil to fatty acids methyl esters with methanol. Separation of this phase and addition of
Externí odkaz:
https://doaj.org/article/89c7c48d98d54c9982efad372a878e10
Autor:
Sandro L. Barbosa, Savio E. O. Miranda, Bruna K. Barbosa, Myrlene Ottone, Stanlei Ivair klein, Adriano C. M. Baroni, Gabriela R. Hurtado
Publikováno v:
Eclética Química, Vol 39, Iss 1, Pp 120-130 (2018)
Biodiesel is obtained by transesterification of animal and vegetable triglycerides (fats), and have several advantages over fossil fuel, perhaps the most important being its renewable source and its lack of pollutants such as aromatic and sulfur comp
Externí odkaz:
https://doaj.org/article/e8f248f1cfa9423c9324bf9bf059e878
Autor:
Guilherme L. C. Lage, Patrícia M. Oliveira, Stanlei Klein, David Lee Nelson, Myrlene Ottone, Sávio E.O. Miranda, Milton de S. Freitas, Maria Luíza Pereira e Oliveira, Lucas Pacônio Silva, Natália de Souza Freitas, Yuno Raphael Ferreira Araújo, Sandro L. Barbosa
Publikováno v:
Journal of Engineering Research. 2:3-10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c41e17dbe88583886de3eb4f6ab5bc2
https://doi.org/10.22533/at.ed.3172192223085
https://doi.org/10.22533/at.ed.3172192223085
Autor:
Zanatta, Sandro L. Barbosa, David Lee Nelson, Lucas Paconio, Moises Pedro, Wallans Torres Pio dos Santos, Alexandre P. Wentz, Fernando L. P. Pessoa, Foster A. Agblevor, Daniel A. Bortoleto, Maria B. de Freitas-Marques, Lucas D.
Publikováno v:
Bioengineering; Volume 10; Issue 6; Pages: 692
Red mud (RM) is composed of a waste alkaline solution (pH = 13.3) obtained from the production of alumina. It contains high concentrations of hematite (Fe2O3), goethite (FeOOH), gibbsite [Al(OH)3], a boehmite (AlOOH), anatase (Tetragonal–TiO2), rut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::f5d19bf142662ea94780ab9dfccb09c6
Autor:
Sandro L. Barbosa, David Lee Nelson, Savio E. O. Miranda, Wallans Torres Pio dos Santos, Alexandre Pereira Wentz, Helvia Nancy Fuzer Lira, Fernando L. P. Pessoa, Foster A. Agblevor, Daniel Armelim Bortoleto, Maria Betânia de Freitas-Marques, Wagner da Nova Mussel, Lucas D. Zanatta
The presence of copper in distilled sugar cane spirits, especially cachaça produced in alembics, has impeded the marketing of this product. Red mud (RM) is a residue obtained from alumina production. It contains a high concentration of metal oxides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::119941e5b57e3bb394a2f0a05d8e7207
https://doi.org/10.20944/preprints202303.0537.v1
https://doi.org/10.20944/preprints202303.0537.v1
