Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Maria Cecília Vaz de Campos"'
Autor:
Liliane Dailei Almeida Gruber, Flaviana Cardoso Damasceno, Elina Bastos Caramão, Rosângela Assis Jacques, Ana Maria Geller, Maria Cecília Vaz de Campos
Publikováno v:
Química Nova, Vol 35, Iss 7, Pp 1423-1433 (2012)
Brazilian petroleum is known by its high acidity due to the presence of acidic constituents, especially naphthenic acids (NA). The total characterization of the NA in petrochemical samples has been receiving special attention in research and comprise
Externí odkaz:
https://doaj.org/article/d679191074c04abebf39876f74d3b71e
Autor:
Valéria Flores Péres, Liliane Dailei Almeida Gruber, Flaviana C. Damasceno, Rosângela Assis Jacques, Maria Cecília Vaz de Campos, Alexandre O. Gomes, Elina Bastos Caramão, Ana Maria Geller, Regina C. L. Guimarães
Publikováno v:
Anal. Methods. 6:807-816
By the classical definition naphthenic acids (NAs) are a complex mixture of monocarboxylic acids containing one or more alkyl-substituted alicyclic rings or only aliphatic carbon chains. Based on the great interest of the oil industry in the elucidat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f234d344926a866be1bbbc74a5797188
https://doi.org/10.1039/c3ay40851e
https://doi.org/10.1039/c3ay40851e
Autor:
Elina Bastos Caramão, Jorge Lopez, Tiago Schena, Marcelo Vieira Migliorini, Tarciana M Almeida, Maria Elisabete Machado, Anne Raquel Teixeira Cardoso, Laiza Canielas Krause, Maria Cecília Vaz de Campos, Mozart D Bispo
Publikováno v:
Journal of Agricultural and Food Chemistry. 61:6812-6821
This work studied fast pyrolysis as a way to use the residual fiber obtained from the shells of coconut ( Cocos nucifera L. var. Dwarf, from Aracaju, northeastern Brazil). The bio-oil produced by fast pyrolysis and the aqueous phase (formed during th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98943ca79f4bf5a1016e69b48c95cf75
https://doi.org/10.1021/jf401379s
https://doi.org/10.1021/jf401379s
Autor:
Priscila S. Almeida, Elton Franceschi, Aline Leite Pereira Costa de Oliveira, Cláudio Dariva, Gustavo R. Borges, Maria Cecília Vaz de Campos
Publikováno v:
Bioresource technology. 230
Thermoliquefaction of palm oil fiber was investigated using supercritical ethanol as solvent. A semi-continuous laboratory scale unit was developed to investigate the effects of temperature (300-500°C), heating rate (10-30°C.min-1) and cracking tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82bfdd5f347fbf362d7bb0ea4d4e4a8e
https://pubmed.ncbi.nlm.nih.gov/28119153
https://pubmed.ncbi.nlm.nih.gov/28119153
Autor:
Clarisse Maria Sartori Piatnicki, Maria Cecília Vaz de Campos, Elina Bastos Caramão, Eniz Conceição Oliveira, Pedro Jose Sanches Filho
Publikováno v:
Journal of Chromatography A. 1105:95-105
Naphthenic acids, C n H 2 n + Z O 2 , are a complex mixture of alkyl-substituted acyclic and cycle-aliphatic carboxylic acids. The content of naphthenic acids and their derivatives in crude oils is very small, which hinders their extraction from matr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ecc84c913f77bcd28da534612f8589b
https://doi.org/10.1016/j.chroma.2005.07.040
https://doi.org/10.1016/j.chroma.2005.07.040
Autor:
Maria Ines Soares Melecchi, Valéria Flores Pérez, Cláudia Alcaraz Zini, Maria Cecília Vaz de Campos, Maria Goreti Rodrigues Vale, Elina Bastos Caramão, Maria Regina Alves Rodrigues, Eniz Conceição Oliveira
Publikováno v:
Journal of Chromatography A. 1105:186-190
Carbozoles are important compounds in crude oils, as they may be used as geochemical tracers, being the major type of nitrogen compounds in petroleum. At the same time, they are regarded as undesirable due to the problems they may cause in the refini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23fc294115b637d0c05b360dbb695f3c
https://doi.org/10.1016/j.chroma.2005.11.001
https://doi.org/10.1016/j.chroma.2005.11.001
Autor:
Eniz Conceição Oliveira, Maria Goreti R. Vale, Elina Bastos Caramão, Maria Cecília Vaz de Campos, Aline Sant'ana Lopes
Publikováno v:
Journal of Chromatography A. 1027:171-177
In this work, preparative liquid chromatography was used for the separation of the nitrogen compounds in a sample of heavy gas oil from a Brazilian petroleum. Initially it took place a pre-fractionation by neutral aluminium oxide and the compounds we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b66c139097a4a0fef2fdd84ea309327
https://doi.org/10.1016/j.chroma.2003.08.088
https://doi.org/10.1016/j.chroma.2003.08.088
Autor:
Rosângela Assis Jacques, Elina Bastos Caramão, Flaviana Cardoso Damasceno, Maria Cecília Vaz de Campos, Ana Maria Geller, Liliane Dailei Almeida Gruber
Publikováno v:
Química Nova v.35 n.7 2012
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 35, Iss 7, Pp 1423-1433 (2012)
Química Nova, Volume: 35, Issue: 7, Pages: 1423-1433, Published: 2012
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Vol 35, Iss 7, Pp 1423-1433 (2012)
Química Nova, Volume: 35, Issue: 7, Pages: 1423-1433, Published: 2012
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Brazilian petroleum is known by its high acidity due to the presence of acidic constituents, especially naphthenic acids (NA). The total characterization of the NA in petrochemical samples has been receiving special attention in research and comprise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5998498240f941b9c6a59663609d5120
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000700025
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000700025
