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  • 1 Universidade Federal da Paraíba Departamento de Química, CCEN João Pessoa Brazil CEP 58059-900 PB Campus I João Pessoa Brazil CEP 58059-900 PB Campus I
  • 2 Universidade Federal do Rio Grande do Norte Departamento de Química, CCET Natal Brazil RN Natal Brazil RN
  • 3 Universidade Federal do Maranhão Departamento de Química São Luis Brazil MA São Luis Brazil MA
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Abstract  

This work evaluates the thermal and kinetic behaviour of corn biodiesel obtained by the methanol and ethanol routes. As to the TG curves, in air three thermal decomposition steps are for the methanol biodiesel and two steps are for the ethanol biodiesel. These steps are related to the evaporization and/or combustion of the methyl and ethyl esters, respectively. The corn oil presented four thermal decomposition steps in air, and only one step in nitrogen. These steps were attributed to the evaporization and/or decomposition of triglycerides. The TG and DTA profiles of the biodiesel approach the mineral diesel oil ones.