IVONE MULAKO SATO
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Artigo IPEN-doc 28152 Extraction of molybdenum from spent NiMo hydrocracking catalysts assisted by ionizing radiation2022 - KONDO, F.M.; DUARTE, C.L.; SOMESSARI, S.L.; SATO, M.I.; SALVADOR, V.L.R.; LIMA, N.B.; MARTINELLI, J.R.; CALVO, W.A.P.A catalyst is a substance that changes the rate of a reaction. In the petroleum industry, the catalysts are commonly used for fluid catalytic cracking and hydrocracking carried out with catalyst, each of them applied in a specific stage. These catalysts are used to facilitate the molecular chains cracking, which will generate a mixture of hydrocarbons. However, the catalyst gradually loses its activity, either by changing its original molecular structure or by its contamination from other petroleum molecules. The application of ionizing radiation (medium-energy electron beam) over these spent catalysts was studied to contribute the extraction of metals or rare-earths of high added-value. Tests conducted with hydrocracking catalysts were used the technique of electron beam irradiation (1.3 MeV) and had as a subject the extraction of molybdenum. Energy Dispersive X-ray analysis was performed on a Shimadzu EDX-720/800HS and X-ray Diffraction analysis on a Rigaku MultiFlex. Electron beam irradiation had a positive contribution if compared to traditional thermal and chemical methods. In temperature around 750 °C, hydrocracking irradiated catalysts of the lower region have an extraction of molybdenum (MoO3) yield twice higher compared to non-irradiated ones, in other words 57.65% and 26.24%, respectively.Artigo IPEN-doc 20702 Petroleum and diesel sulfur degradation under gamma radiation2015 - ANDRADE, LUANA dos S.; CALVO, WILSON A.P.; SATO, IVONE M.; DUARTE, CELINA L.Artigo IPEN-doc 09947 Treatment of effluents from petroleum production by electron beam irradiation2004 - DUARTE, C.L.; GERALDO, L.L.; JUNIOR, O.A.P.; BORRELY, S.I.; SATO, I.M.; SAMPA, M.H.O.Artigo IPEN-doc 09946 Application of the electron-beam treatment for Ca, Si, P, Al, Fe, Cr, Zn, Co, As, Se, Cd and Hg removal in the simulated and actual industrial effluents2004 - RIBEIRO, M.A.; SATO, I.M.; DUARTE, C.L.; SAMPA, M.H.O.; SALVADOR, V.L.R.; SCAPIN, M.A.Artigo IPEN-doc 09948 Efficiency of organic compounds removal by electron-beam irradiation in presence of high metal concentrations2004 - DUARTE, C.L.; RIBEIRO, M.A.; SATO, I.M.; SAMPA, M.H.O.Artigo IPEN-doc 12237 Recycling of the used automotive lubricating oil by ionizing radiation process2007 - SCAPIN, MARCOS A.; DUARTE, C.; SAMPA, MARIA H.O.; SATO, IVONE M.Artigo IPEN-doc 14490 Assessment of gamma radiolytic degradation in waste lubricating oil by GC/MS and UV/VIS2009 - SCAPIN, MARCOS A.; DUARTE, CELINA L.; BUSTILLOS, JOSE O.W.V.; SATO, IVONE M.