Zobrazeno 1 - 10 of 20 pro vyhledávání: '"Eduardo Stadler"'
1
Preparation and characterization of the pentacyanoferrate(II) on the surface of N-(4-pyridilmethylidene)chitosan
Autor: Eduardo Stadler, Mauro C. M. Laranjeira, Clóvis Antonio Rodrigues, Valderes Drago
Publikováno v: Carbohydrate Polymers. 42:311-314
Details of the complex formed between pentacyanoferrate(II) and chitosan [4PMCFe(CN) 5 ] 3− are reported. The polymer was characterized by infrared and Mossbauer spectroscopy, and cyclic voltammetry. The infrared spectrum for [4PMCFe(CN) 5 ] 3− c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57132c3582a7747f3ac5a83839555802
https://doi.org/10.1016/s0144-8617(99)00175-7
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2
PREPARATION, CHARACTERIZATION, AND CHROMATOGRAPHY PROPERTIES OF CHITIN MODIFIED WITH FeCl3
Autor: F. Reynaud, Clóvis Antonio Rodrigues, Eduardo Stadler, Valderes Drago
Publikováno v: Journal of Liquid Chromatography & Related Technologies. 22:761-769
We report some details of the FeCl3 immobilized in chitin. The polymer was characterized by infrared and Mossbauer spectroscopy. Chitin modified with iron (CH-Fe) was used as a support for thin layer chromatography and column chromatography for separ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2be32964708dbb820c4a3bfe3fbcc3ff
https://doi.org/10.1081/jlc-100101697
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3
Interaction of Cu(II) on N-(2-pyridylmethyl) and N-(4-pyridylmethyl) chitosan
Autor: Mauro C. M. Laranjeira, Eduardo Stadler, Valfredo T. Fávere, Clóvis Antonio Rodrigues
Publikováno v: Polymer. 39:5121-5126
Chitosan functionalized with 2-pyridinecarboxaldehyde and 4-pyridinecarboxaldehyde were used to study the equilibrium constants of adsorption copper(II) in aqueous solutions. The degree of substitution of NH2 groups of the chitosan was 0.85. The adso
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d96a274caa8eac8e372ecbb8dae13cd
https://doi.org/10.1016/s0032-3861(97)10190-2
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4
Mössbauer, vibrational and electronic spectroscopy of trinuclear μ-oxo iron(III) acetate clusters with pyridine and derivatives as ligands
Autor: Carlos Jorge da Cunha, Izaura Hiroko Kuwabara, Christiane Fernandes, Valderes Drago, Eduardo Stadler
Publikováno v: Scopus-Elsevier
In this study we have investigated eight complexes of the general composition [Fe 3 O(OOCCH 3 ) 6 (L) 3 ]NO 3 , where L is a heterocyclic ligand, viz. a 4-substituted pyridine. The Mossbauer spectra of the complexes showed isomer shifts and quadrupol
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95a4c838e324ddfac9208e96dbb27762
https://doi.org/10.1016/s0584-8539(96)01753-9
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5
Electrochemical Properties of [Ru(edta)(H2O)]−Immobilized on a Zirconium(IV) Oxide-Coated Silica Gel Surface
Autor: Eduardo Stadler, Ubirajara P. Rodrigues Filho, Carlos R. M. Peixoto, Lauro T. Kubota, Yoshitaka Gushikem
Publikováno v: Journal of Colloid and Interface Science. 184:236-240
[Ru(edta)(H2O)]−is strongly adsorbed on a zirconium(IV) oxide-coated silica gel surface. The immobilized complex showed an electrochemical response due to the Ru(II)/Ru(III) redox couple. By substituting the coordinated water molecule in the adsorb
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52c9c71eeaf3d81d1536bea328119852
https://doi.org/10.1006/jcis.1996.0616
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7
Pentacyanoferrates(II) on the surface of organomodified silica gel: The matrix effect
Autor: Urbirajara Pereira Rodrigues Filho, Yoshitaka Gushikem, Eduardo Stadler, Fred Y. Fujiwara, Valderez Drago
Publikováno v: Structural Chemistry. 5:129-133
Pentacyanoferrate(II) absorbed on a silica gel surface previously modified with 3-aminopropyl and 3-imidazolylpropyl groups were characterized by13C MAS/NMR, FT-IR, Mossbauer spectroscopy, and cyclic voltammetry. FT-IR and13C MAS/NMR data indicated t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9333662049045276d59da5a7cf290293
https://doi.org/10.1007/bf02265355
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9
The preparation and characterization of the hexacyanides immobilized in chitosan
Autor: Clóvis Antonio Rodrigues, Eduardo Stadler, Valderes Drago, Mauro C. M. Laranjeira
Publikováno v: Journal of the Brazilian Chemical Society v.8 n.1 1997
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Volume: 8, Issue: 1, Pages: 07-11, Published: 1997
We report some details of the ferrocyanide and ferricyanide complexes immobilized in chitosan. These immobilized complexes are characterized by electrochemistry, and infrared and Mössbauer spectroscopy. Alterations are observed in the infrared and M
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69ef1260261230a7d3cee367d5dedd7c
https://doi.org/10.1590/s0103-50531997000100003
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10
Synthesis and characterization of a binuclear iron-?-peroxo complex of a tetraaza macrocyclic ligand
Autor: Mauricio A. C. Melo, Antonio S. Mangrich, Noel Massinhan Levy, Eduardo Stadler, Valderes Drago
Publikováno v: Transition Metal Chemistry. 18
The dimerization of complex (1), [Fe(TIM)(H2O)2]2+ (TIM = 2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetra-deca-1,3,8,10-tetraene) in aerated aqueous solution results in formation of the binuclear complex (2), [(H2O)(TIM)-Fe—O—O—Fe(TIM))(H2O)]4
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18563f57d297ecd24304743497e93efd
https://doi.org/10.1007/bf00191136
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