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Synthesis, characterization and catalytic activity of Mn-Co-Al by the reaction of decomposition of isopropanol

Grant number: 15/19391-5
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2016
Effective date (End): May 31, 2017
Field of knowledge:Engineering - Chemical Engineering - Chemical Technology
Principal Investigator:Gilberto Garcia Cortez
Grantee:Gabriela Uchôna dos Santos
Host Institution: Escola de Engenharia de Lorena (EEL). Universidade de São Paulo (USP). Lorena , SP, Brazil

Abstract

Mixed oxides are used as catalysts for potentially exhibit a high specific area, thermal stability and homogeneous distribution of the cations embedded in the structure. Efficient mixed oxides catalysts can be easily prepared by a controlled thermal decomposition of layered double hydroxide (LDH) precursors. To obtain the oxides are prepared as precursors, hydrotalcite-like compounds and layered double hydroxides (LDHs) of cobalt, manganese and aluminum employing the batch coprecipitation method under conditions of constant pH and temperature. The salts used as precursors are aluminum nitrate, cobalt and manganese in solution with sodium nitrate and sodium hydroxide. The precursors are characterized by X-ray diffraction (XRD) and analyzed by thermogravimetry (TG). The catalysts will be characterized by nitrogen adsorption, X-ray diffraction (XRD), temperature programmed reduction (TPR), isopropanol decomposition reaction. This project aims to assess the feasibility of using the mixed oxide Mn-Co-Al as catalysts in the reaction of oxidative dehydrogenation of propane, from the characterizations performed.

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