Study of the sulfur dioxide electro-oxidation mechanism by 2D ATR-SEIRAS

• Grant number: 19/22504-7
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• Effective date (Start): January 13, 2020
• Effective date (End): April 05, 2020
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Susana Inés Córdoba de Torresi
• Grantee: Leonardo Domenico De Angelis
• Supervisor: Katharina Krischer
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Research place: Technical University of Munich, Garching (TUM), Germany
• Associated to the scholarship: 18/13944-0 - SO2 electro-oxidation study. influence of the temperature and convection regime, BP.IC

Abstract

The extensive use of fossils fuels led to a significantly concentration of SO2, a poisonous species, in the atmosphere. In a search to reduce its presence in breathable air and to pursue more ecological ways of obtaining energy, it is proposed the SO2 oxidation reaction to H2SO4 generating H2 as side product, a clean and efficient fuel. The reaction presents an oscillatory dynamics due to the formation of catalytic poisons on Au in HClO4 containing media. The formation/consumption of these poisonous species can be followed over time by ATR-FTIR spectroelectrochemical set up and since oscillatory behavior is present, spatial 2D resolution can provide information related to the reaction's chaotic behavior. (AU)