Thermal stability evaluation of biodiesel derived from sunflower oil obtained through heterogeneous catalysis (KNO3/Al2O3) by thermogravimetry

Biofuel production is acquiring an important role as an energy alternative. Several research groups have proposed the use of heterogeneous catalysts in order to replace homogeneous catalysts. A new group of basic catalysts has been prepared with the aim of being used as heterogeneous catalysts in bi...

Full description

Saved in:
Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2015, Vol.119 (1), p.715-720
Main Authors: da Silva, Júlio César Teixeira, Gondim, Amanda Duarte, Galvão, Luzia Patrícia Fernandes Carvalho, da Costa Evangelista, João Paulo, Araujo, Antonio S., Fernandes, Valter José
Format: Article
Language:English
Subjects:
Aluminum compounds
Analysis
Analytical Chemistry
Biodiesel fuels
Biomass energy
Catalysts
Chemistry
Chemistry and Materials Science
Diffraction
Esters
Heterogeneous catalysis
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Biofuel production is acquiring an important role as an energy alternative. Several research groups have proposed the use of heterogeneous catalysts in order to replace homogeneous catalysts. A new group of basic catalysts has been prepared with the aim of being used as heterogeneous catalysts in biodiesel production. The catalysts KNO 3 /Al 2 O 3 have been characterized and evaluated in the transesterification processes. They were characterized by X-ray diffraction and Scanning electron micrographs. The catalytic activity was evaluated in the transesterification of sunflower oil in biodiesel. The thermal stability of the biodiesel and the percentage of esters were evaluated. Through the TG curves, the samples of 2 and 4 % of KNO 3 /Al 2 O 3 have presented two mass loss and partial conversion of triglycerides in esters. Thus, the sample that contains 4 % KNO 3 /Al 2 O 3 has shown better catalytic activity in the transesterification reaction of sunflower oil, with a conversion rate of 60 % ethyl esters. On the other hand, the samples of 6 and 8 % of KNO 3 /Al 2 O 3 have revealed only mass loss.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-014-4145-0