Search Results - "Queiroz, Carlos A. da S."

Solubility behavior of rare earths with ammonium carbonate and ammonium carbonate plus ammonium hydroxide: Precipitation of their peroxicarbonates by de Vasconcellos, Mari E., da Rocha, S.M.R., Pedreira, W.R., Queiroz, Carlos A. da S., Abrão, Alcídio

“…The purpose of this work is to report the significant behavior of the rare earths when treated with ammonium carbonate and with a binary mixture of ammonium…”
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Enrichment of yttrium from rare earth concentrate by ammonium carbonate leaching and peroxide precipitation by de Vasconcellos, Mari E., da Rocha, S.M.R., Pedreira, W.R., da S. Queiroz, Carlos A., Abrão, Alcídio

“…The rare earth elements (REE) solubility with ammonium carbonate vary progressively from element to element, the heavy rare earth elements (HRE) being more…”
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Thermoanalytical characterization of neodymium peroxicarbonate by da S. Queiroz, Carlos A, Matos, Jivaldo R, Vasconcellos, Mari E, Abrão, Alcı́dio

“…This paper presents the data collected for the neodymium peroxicarbonate by thermogravimetry (TG)–differential thermogravimetry (DTG), active oxygen…”
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Pure cerium dioxide preparation for use as spectrochemical standard and analysed by inductively coupled plasma mass spectrometry (SF ICP-MS) by Queiroz, Carlos A. da S., Pedreira, Walter R., Abrão, Alcídio, Rocha, Soraya M. R. da, Vasconcellos, Mari E. de, Seneda, José A., Forbicini, Christina A. L. G. de O., Boaventura, Geraldo R., Pimentel, Márcio M.

“…For several years, IPEN/CNEN-SP has been working in the separation of the Rare Earth (RE) elements. A simple and economic procedure for the purification of…”
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Sequential separation of the yttrium—heavy rare earths by fractional hydroxide precipitation by de Vasconcellos, Mari E., Queiroz, Carlos A.da S., Abrão, Alcı́dio

“…In the course of the treatment of monazite in Brazil a fraction of crude yttrium carbonate is obtained. The main constituents of this fraction are: Y 2O 3…”
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Synthesis and thermoanalytical characterization of samarium peroxocarbonate by Queiroz, Carlos A.da S., de Vasconcellos, Mari E., da Rocha, Soraya M.R., Seneda, José A., Pedreira, Walter R., Matos, Jivaldo do R., Abrão, Alcı́dio

“…This paper presents the samarium peroxocarbonate synthesis and the data collected by thermogravimetry (TG)–differential thermogravimetry (DTG), active oxygen…”
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