Search Results - "Farias, Robson F. de"

Preparation and Thermogravimetric and Antimicrobial Investigation of Cd (II) and Sn (II) Adducts of Mercaptopyridine, Amino Triazole Derivatives, and Mercaptothiazoline Organic Ligand Moieties by Gaber, Ahmed, Alsanie, Walaa F., de Farias, Robson F., Refat, Moamen S.

“…The solid adducts of SnCl2.(3amt).H2O, SnCl2.2(3amt).H2O, CdCl2.(3amt), CdCl2.2(3amt), SnCl2.(2mct).0.5H2O, SnCl2.2(2mct), CdCl2.(2mct), CdCl2.2(2mct).H2O,…”
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Wood (Bagassa guianensis Aubl) and green coconut mesocarp (cocos nucifera) residues as textile dye removers (Remazol Red and Remazol Brilliant Violet) by Monteiro, Mônica S., de Farias, Robson F., Chaves, José Alberto Pestana, Santana, Sirlane A., Silva, Hildo A.S., Bezerra, Cícero W.B.

“…In this work the efficiency of two lignocellulosic waste materials, wood residues and coconut mesocarp, were investigated as adsorbents towards two…”
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Synthesis, characterization and fluorescence study of Eu(III) tungstates and molybdates by Farias, Robson F. de, Airoldi, Claudio, Belian, Mônica F., Alvres, Severino

“…A new tungstate Na 8WO 7·2H 2O and molybdate compound (NH 4) 6Mo 7O 24·4H 2O are used, respectively, as precursors to the preparation (in aqueous solutions and…”
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Synthesis ( in situ) on organofunctionalized silica and spectroscopic study of Eu(III) complexes by de Farias, Robson F., de Freitas, Ana P.S., Belian, Mônica F., Malta, Oscar L., de Sá, Gilberto F., Alves, Severino

“…The complexes [Eu(eta) 2·(H 2O) 4]Cl and [Eu(eta) 2·(phen)·(H 2O) 2]Cl (eta = Etil 4,4,4-trifluoroacetoacetate; phen = 1,10-phenanthroline) are synthesized and…”
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Synthesis and Characterization of Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) Complexes With 2,6-Pyridinedicarboxilic Acid, Chelidamic Acid, and Chelidonic Acid by Belian, Mônica F., Silva, Wagner E., de Sá, Gilberto F., Alves, Severino, de Farias, Robson F.

“…The synthesis and characterization of 21 complexes of Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) with 2,6-pyridinedicarboxilic acid,…”
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Dye Adsorption on Inorganic Matrices as a New Strategy to Gas Capture: Hydrogen Sulfide Adsorption on Rodhamine B Modified Kaolinite by Batista, Luiz C. D., de S. Dantas, Deyse, de Farias, Robson F.

“…In this communication, the synthesis, characterization, and hydrogen sulfide (H 2 S) adsorption of Rhodamine B modified kaolinite are reported. The modified…”
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Spectroscopic study of Eu and Tb complexes on polysiloxane tridimensional networks by de Souza, Jucimar M., de Sá, Gilberto F., de Azevedo, Walter M., Alves, Severino, de Farias, Robson F.

“…A spectroscopic study performed on Eu(III) and Tb(III) complexes dispersed on polysiloxane sol–gel glasses is reported. The complexes…”
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Thermal study of the anatase–rutile structural transitions in sol–gel synthesized titanium dioxide powders by ROBSON F. DE FARIAS, CECILIA C. GUEDES E SILVA, THOMAZ A. G. RESTIVO

“…Titanium dioxide powders were synthesized by the sol–gel process using titanium tetrabutoxide as the precursor. The syntheses were performed in saturated…”
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From Plates to Spheres: Tuning the Vanadyl Phosphate Morphology by Intercalation of Nitrosyl Oxide by de Miranda, José C. V., Dantas, Deyse de S., Dantas, João E. T. S., Pereira, Francisco C., de Farias, Robson F.

“…The lamellar matrix VOPO 4 .2H 2 O was used to the intercalation of nitrosyl (NO) ligand. The vanadyl phosphate matrix, as well as the prepared intercalated…”
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Adsorption of Methylene Blue and Crystal Violet on Babaçu (Obignya phalerata) Coconut Epicarp and the Development of a New Hg(II) Electrochemical Sensor by Cantanhede, Leonardo B., Silva, Hildo A. dos S., Santana, Sirlane A. A., Bezerra, Cícero W. B., de Farias, Robson F.

“…In this work, babaçu coconut epicarp (BCE), an abundant vegetal product of low cost from Maranhão State, Brazil, is studied as adsorptive agent toward dyes:…”
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Adsorption of crude oil on anhydrous and hydrophobized vermiculite by da Silva, Umberto G., de F. Melo, Marcus A., da Silva, Adaı́lton F., de Farias, Robson F.

“…This publication reports the adsorption of crude oil on vermiculite samples, expanded and hydrophobized with carnauba ( Copernı́cia Cerı́fera) wax. The…”
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Spectroscopic, thermal and kinetic studies of coordination compounds of Zn(II), Cd(II) and Hg(II) with norfloxacin by Refat, Moamen S., Mohamed, Gehad G., de Farias, Robson F., Powell, Annie K., El-Garib, Mohamed S., El-Korashy, Sabry A., Hussien, Mostafa A.

“…Some metal complexes of norfloxacin (NOR) with the formula [M(NOR) 2 ]X 2 · n H 2 O [M = Zn(II), (X = Cl − , AcO − , Br − and I − ), Cd(II), (X = Cl − , NO 3 −…”
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The structure, thermodynamic instability and energetics of NI3, its specific impulse and a strategy for its stabilization by Marinho, George S., de Farias, Robson F.

“…•A theoretical investigation on the causes of NI3 chemical instability is performed.•It is shown that polyvinylchloride resin, polyvinyl acetate resin or…”
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Calorimetric study of the adducts CdBr2·nL (n = 1 and 2; L = ethyleneurea and propyleneurea) by de Farias, Robson F, Airoldi, Claudio

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A new Eu(III)/Tb(III) binuclear coordination compound with crown ethers and bridging 4,4′-dipyridyl by Belian, Mônica F., Freire, Ricardo O., Galembeck, André, de Sá, Gilberto F., de Farias, Robson F., Alves, Severino

“…A new Eu(III)/Tb(III) binuclear coordination compound with red and yellow emissions in solution and solid state, respectively, has been prepared. The…”
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Synthesis, characterization and catalytic properties of sol–gel derived mixed oxides by de Farias, Robson F, Arnold, Ulrich, Martı́nez, Leandro, Schuchardt, Ulf, Jannini, Marcelo J.D.M, Airoldi, Claudio

“…Alumina and 1:1 mixed oxides of Al 2O 3–ZrO 2, Al 2O 3–TiO 2, SiO 2–TiO 2 and ZrO 2–TiO 2 were synthesized via a sol–gel process by the so-called neutral amine…”
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The first and second ionization energies of the element 119: absolute hardness and Mulliken electronegativity for the cation 119+ based on an empirical equation involving absolute hardness by de Farias, Robson F.

“…[Display omitted] The following empirical equation was derived: UPOT=(−0.494r++122.392)(η++η−)−109.514η++1191.694kJmol−1, where r+ is the cation radius (pm),…”
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The intercalation of n-alkyldiamines into crystalline layered titanate by Airoldi, Claudio, Nunes, Liliane M, de Farias, Robson F

“…The synthesis, characterization, and intercalation of n-alkyldiamines H 2N(CH 2) nNH 2 (n = 2, 3, 4, 6, 7, and 8) into layered hydrous tetratitanic acid H 2Ti…”
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Thermochemical data on adducts of copper chloride with the amino acids lysine and glycine by Martı́nez, Leandro, de Farias, Robson F, Airoldi, Claudio

“…Adducts of the general formula CuCl 2· nlys ( n=1, 2, 4; lys=lysine) and CuCl 2· ngly ( n=2, 4; gly=glycine) were prepared by reacting the ligands with CuCl 2…”
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Thermochemical features of lamellar silica, copper, nickel and cobalt-doped forms synthesized from neutral amine route by de Farias, Robson F, Airoldi, Claudio

“…Lamellar silica prepared from sol–gel process through neutral amine route, was doped with cobalt, nickel or copper. X-ray diffraction pattern,…”
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