Search Results - "ARAUJO MELO, D. M"

Preparation and characterization of lanthanum palygorskite clays as acid catalysts by Araújo Melo, D.M, Ruiz, J.A.C, Melo, M.A.F, Sobrinho, E.V, Martinelli, A.E

“…Palygorskite clays containing 2, 4, 6 or 10% lanthanum (w/w) were prepared by ion-exchange from acid-leached natural clays. Samples were characterized by…”
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Addition compounds between 4-methylmorpholine- N-oxide (MMNO) and some lanthanides (III) and yttrium (III) nitrates by Bezerra, R.F, Araújo Melo, D.M, Vicentini, G, Zinner, K, Zinner, L.B

“…The compounds show a general formula Ln(NO 3) 3·3MMNO. They are hygroscopic and present similar colour patterns to those of the respective lanthanides, but…”
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Spectroscopic, TG and DSC studies of lanthanide picrate complexes with 1,4-pyrazine-dioxide (pyzDO): crystal structure of the terbium complex by Cardoso, M.C.C, Araújo Melo, D.M, Zukerman-Schpector, J, Zinner, L.B, Vicentini, G

“…Terbium(III), holmium(III) and erbium(III) picrate (pic) complexes with pyzDO with composition: [Ln(pic) (pyzDO) (H 2O) 6](pic) 2(pyzDO)(H 2O), were prepared…”
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Synthesis and characterization of neodymium nickelate powder produced from polymeric precursors by Fernandes, J.D.G, Araújo Melo, D.M, Zinner, L.B, Salustiano, C.M, Silva, Z.R, Alves Júnior, C, da Costa, J.A.P, Longo, E

“…Nanostructured materials with perovskite structure have been extensively studied in the last few years due to their potential for a variety of applications. In…”
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Preparation and characterization of terbium palygorskite clay as acid catalyst by Melo, D.M.Araújo, Ruiz, J.A.C, Melo, M.A.F, Sobrinho, E.V, Schmall, M

“…Palygorskite clays containing 5% and 10% terbium (W/W) were prepared by ion exchange from acid-leached natural clay. Samples were calcined at 523, 573, 623 and…”
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Dehydration and decomposition kinetics of complexes of some rare earth (La, Nd, Dy and Eu) picrates and 2,2′-dithiobis (pyridine-N-oxide) by Marinho, E.P, Borges, F.M.M, Araújo Melo, D.M, Scatena, H, Zinner, L.B, Zinner, K

“…The dehydration and decomposition behavior of some rare earth complexes is analyzed under a kinetic point of view. The experimental data were obtained…”
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Evaluation of the relative acid strength of copper supported in γ-alumina by TG and DSC by Araújo Melo, D.M, Carvalho de Sousa, W.S, Zinner, L.B, Freitas Melo, M.A, da Silva, H.E.B, Gouveia Souza, A

“…The relative acid strength of copper was evaluated by thermogravimetry (TG) and differential scanning calorimetry (DSC) methods, using n-butylamine as a…”
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Calorimetric study of the reaction between lanthanoid trifluoromethanesulphonates and hexamethylphosphoramide (HMPA) in ethanolic solution by Araújo Melo, D.M., da Silva, Z.R., Fernandes, J.D.G., dos Santos, C.P.F., da Silva, H.E.B., Zinner, L.B.

“…Compounds between trifluoromethanesulphonates and HMPA were prepared by reaction of the salt and ligand dissolved in ethanol and acetone, respectively, on…”
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Vocal quality of patients treated for laryngeal tuberculosis, before and after speech therapy by Ruas, A C Nunes, Rolla, V Cavalcanti, de Araújo-Melo, M H, Moreira, J Soares, Valete-Rosalino, C M

“…To evaluate dysphonia in patients treated for laryngeal tuberculosis, and to assess the effect of speech therapy on patients' vocal quality. Seven of 23…”
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Kinetic study of thermal decomposition of the dmit complex of cobalt by ARAUJO MELO, D. M, BORGES, F. M. M, LIMA, F. J. S, SCATENA, H. JR, ZINNER, L. B, FERNANDES, V. J, SOUZA, W. S. C, SILVA, Z. R

“…In this work, a cobalt complex with dmit (1,3-dithiol-2-thione-4,5-dithiolate) as ligand was prepared and its thermal stability was studied by…”
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Structural characterization of [Ln(TFA) 3(HMPA) 3] (Ln=La, Nd, Er) complexes by Bombieri, G., Benetollo, F., Del Pra, A., da Silva Oliveira, V., Araujo Melo, D.M., Zinner, L.B., Vicentini, G.

“…The X-ray data on La, Nd, Er complexes ([Ln(TFA) 3(HMPA) 3]) show that they crystallize in different forms depending on the solvent content. Er is six and…”
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Bis(pentamethylene)urea complexes of the lanthanide nitrates: synthesis, characterization, properties by de Souza, H.K.S., Pedrosa, A.M.Garrido, Marinho, E.P., Batista, M.K.S., Melo, D.M.Araújo, Zinner, K., Zinner, L.B., Zukerman-Schpector, J., Vicentini, G.

“…Lanthanide nitrate complexes of bis(pentamethylene)urea (BPMU) with general formula Ln(NO3)33BPMU, where Ln: La, Nd, Sm, Eu, Ho and Er have been prepared and…”
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Lanthanide trifluoroacetate complexes with 2-azacyclononanone: Thermal and kinetic studies by GARRIDO PEDROSA, A. M, PIMENTEL, P. M, ARAUJO MELO, D. M, SCATENA, H. JR, BORGES, F. M. M, SOUZA, A. G, ZINNER, L. B

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Complexes of lanthanide picrates with 1,4-pyrazine-dioxide by CARDOSO, M. C. C, ZINNER, L. B, ZUKERMAN-SCHPECTOR, J, ARAUJO MELO, D. M, VICENTINI, G

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Hydrated neodymium(III) and europium(III) picrate complexes with pyrazine-N-oxide by MARINHO, E. P, ARAUJO MELO, D. M, ZINNER, L. B, VICENTINI, G, ZUKERMAN-SCHPECTOR, J, ZINNER, K

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Preparation and properties of complexes between rare earth trifluoroacetates and hexamethylphosphoramide (HMPA) by SILVA OLIVEIRA, V, ARAUJO MELO, D. M, ROCHA DA SILVA, Z, ZINNER, L. B, ZINNER, K

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Structural characterization of [Ln(TFA)3(HMPA)3] (Ln=La, Nd, Er) complexes by BOMBIERI, G, BENETOLLO, F, DEL PRA, A, DA SILVA OLIVEIRA, V, ARAUJO MELO, D. M, ZINNER, L. B, VICENTINI, G

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Kinetic study of the thermal decomposition of the compound of terbium(III) trifluoromethanesulfonate and hexamethylphosphoramide (HMPA) employing both Zsakó's and nonlinear methods by PEDROSA, M. F. F, ARAUJO MELO, D. M, SCATENA, H. JR, BORGES, F. M. M, ZINNER, L. B, SILVA, A. O

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Compounds of lanthanide picrates and 2-azacyclononanone (aza) : synthesis, characterization and thermal study by MARINHO, E. P, ARAUJO MELO, D. M, ZINNER, L. B, ZINNER, K, DE MATOS, J. E. X

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Kinetic study of the coordination compounds [M(DMA)3(H2O)6](CF3SO3)3, where M=Ce3+, Tb3+ and Lu3 by ARAUJO MELO, D. M, DA SILVA, H. E. B, ZINNER, L. B, DE OLIVEIRA, O. A

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