S
Severino F. de Oliveira
Researcher at Federal University of Paraíba
Publications - 27
Citations - 589
Severino F. de Oliveira is an academic researcher from Federal University of Paraíba. The author has contributed to research in topics: Adsorption & Silica gel. The author has an hindex of 14, co-authored 27 publications receiving 587 citations. Previous affiliations of Severino F. de Oliveira include State University of Campinas.
Papers
More filters
Journal ArticleDOI
Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes
Ercules E.S. Teotonio,José G.P. Espínola,Hermi F. Brito,Oscar L. Malta,Severino F. de Oliveira,Dalva Lúcia Araújo de Faria,Celly M. S. Izumi +6 more
TL;DR: In this paper, the synthesis, characterization and spectroscopic studies of Eu(III)-perchlorate complexes with amide ligands derived from N -[ x -methylpyridyl]acetamide where x = 3, 4 and 6.
Journal ArticleDOI
Silica gel containing sulfur, nitrogen and oxygen as adsorbent centers on surface for removing copper from aqueous/ethanolic solutions.
Ricardo S A Machado,Maria G. Fonseca,Luiza N.H. Arakaki,José G.P. Espínola,Severino F. de Oliveira +4 more
TL;DR: The new modified silica showed a good sorption ability for copper at lower temperatures and its reuse capacity was demonstrated and infrared and (13)C NMR spectroscopic data in conjunction with thermogravimetric measurements are in agreement with the suggested functionalization.
Journal ArticleDOI
Chemisorption of CuII and CoII chlorides and β-diketonates on silica gel functionalized with 3-aminopropyltrimethoxysilane
José G.P. Espínola,Severino F. de Oliveira,Wolfango E.S. Lemus,Antonio G. Souza,Claudio Airoldi,João C.A. Moreira +5 more
TL;DR: In this paper, the selectivity of 3-aminopropyltrimethoxysilane (SAPS) matrix with β-diketonates was analyzed.
Journal ArticleDOI
On the thermochemistry of intercalation of n-alkylamines into α-titanium hydrogenphosphate
TL;DR: In this paper, an intercalation mechanism was proposed, starting from the amine protonation by POH groups and its insertion between the sheets, which was determined by reaction-dissolution calorimetry, correlates linearly with the number of carbons in the alkyl chain and with the interlamellar distance.
Journal ArticleDOI
New thiol adsorbent grafted on silica gel: synthesis, characterization and employment for heavy metal adsorptions
Luiza N.H. Arakaki,Vera Lucia S. Augusto Filha,José G.P. Espínola,Maria G. Fonseca,Severino F. de Oliveira,Tomaz Arakaki,Claudio Airoldi +6 more
TL;DR: This material was characterized by elemental analysis, IR spectroscopy, thermogravimetry, solid state 13C and 29Si NMR, and surface area measurement and employed as adsorbents for divalent heavy cations from aqueous solutions at room temperature and the isotherms were adjusted to a modified Langmuir equation.