Transesterification (Biodiesel Production)

triglyceride + 3CH3OH → 3 FAME + glycerol

Visão geral

Triglyceride fats react with methanol in the presence of a base catalyst to produce fatty acid methyl esters (FAME, biodiesel) and glycerol. Each triglyceride molecule produces three molecules of biodiesel. This transesterification reaction replaces glycerol with methanol at the ester linkages.

Participantes

Papel Substância Coeficiente Estado
Reagente Methanol CH₃OH 3 (l)
Produto Glycerol C₃H₈O₃ 1 (l)

Exemplo do cotidiano

Biodiesel can be made at home from waste cooking oil using this reaction with methanol and lye (NaOH).

Importância industrial

A produção global de biodiesel ultrapassa os 40 mil milhões de litros anuais. A reação é a base da indústria de diesel renovável usando óleos vegetais e gorduras residuais.

Propriedades

Tipo
Organic
Reversível
Sim
Energia
Exotérmico
ΔH
-12,0 kJ/mol
Catalisador
NaOH or KOH

Reações relacionadas

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

Frequently Asked Questions

What is the equation for Transesterification (Biodiesel Production)?
The balanced equation is: triglyceride + 3CH₃OH → 3 FAME + glycerol.
What type of reaction is Transesterification (Biodiesel Production)?
Transesterification (Biodiesel Production) is a organic reaction. It is reversible under certain conditions.
Is Transesterification (Biodiesel Production) exothermic or endothermic?
Transesterification (Biodiesel Production) is exothermic (releases energy). The enthalpy change (ΔH) is -12.0 kJ/mol.
What conditions are needed for Transesterification (Biodiesel Production)?
This reaction requires a catalyst (NaOH or KOH).