SÃntese de biodiesel de Ãleo de nabo forrageiro empregando metanol supercrÃtico

AUTOR(ES)

Lorena Dambiski

DATA DE PUBLICAÇÃO

2007

RESUMO

The biodiesel produced in this experiment was obtained from radish oil. We used two methods, one with catalyst-free supercritical methanol and the other with 5% zeolite heterogeneous catalyst (based on its total mass). To obtain biodiesel purification we used column adsorption chromatography (AOCS Cd 11c-93) from which was observed that the catalyst-free supercritical methanol process gave good results demonstrated by conversion rates of up to 86.3% (75 minutes, 15MPa, 430ÂC). However, the zeolite addition had negative effects in the biodiesel production above. The purified biodiesel samples had been characterized later by infrared spectroscopy (FTIR) and by high resolution gas chromatography (HRGC). The results obtained from these techniques had shown that the major percentage of unsaturated carbonic chains of methyl esters had been broken during thesupercritical methanol reactions, producing biodiesel with higher percentage of saturated esters that are more stable

ASSUNTO(S)

Ãsteres biodiesel supercritical alcohol metanol zeolite materiais Ãleos vegetais com biocombustÃvel transesterificaÃÃo engenharia de materiais e metalurgica methyl esters

Documentos Relacionados

• AvaliaÃÃo dos solventes diÃxido de carbono supercrÃtico e propano subcrÃtico na extraÃÃo do Ãleo de girassol
• Estudo da extraÃÃo de Ãleo de sementes de gergelim (Sesamun indicum L.) empregando os solventes diÃxido de carbono supercrÃtico e n-propano pressurizado
• Produção de biodiesel via transesterificação do óleo de nabo forrageiro
• AvaliaÃÃo do Potencial LipÃdico, ProtÃico e Antioxidante de ResÃduos de IndÃstrias de Processamentos de Frutas e Emprego de CO2 SupercrÃtico no Estudo de MetabÃtilos SecundÃrios
• Nabo forrageiro: sistemas de manejo.