1. Post‐Graduation Program in Mining, Metallurgical and Materials Engineering, Materials DepartmentFederal University of Rio Grande do Sul Campus do Vale, 91501‐970 Porto Alegre Rio Grande do Sul Brazil
2. Chemical Engineering CourseUniversity of Caxias do Sul 95070‐560 Caxias do Sul Rio Grande do Sul Brazil
3. Engineering of Processes and Technologies Post‐Graduate ProgramUniversity of Caxias do Sul 95070‐560 Caxias do Sul Rio Grande do Sul Brazil
4. Chemical EngineeringUniversity of Passo Fundo BR São José, Passo Fundo Brazil 99052‐900