Niobium Compounds in Transesterification Reactions of Soybean Oil: A Promising Use of NbCl5

Author(s)

Lazaro de Carvalho, Jose Henrique ^[1] ; Bregadiolli, Bruna Andressa ^[1] ; da Silva-Filho, Luiz Carlos ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Sch Sci, Chem Dept, Av Eng Luiz Edmundo Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

• Document type: Journal article
• Source: ORBITAL-THE ELECTRONIC JOURNAL OF CHEMISTRY; v. 10, n. 5, p. 423-429, APR-JUN 2018.
• Web of Science Citations: 2

Abstract

In heterogeneous catalysis, many transition metals and its derivatives, such as titanium and iron, have been vastly studied as nanoscale catalysts, but little is known about the use of niobium compounds. Being biodegradable and renewable, biodiesel contribute to the independence from oil and environment protection. In this work we have used different niobium compounds NbCl5, C4H4NNbO9 center dot xH(2)O, NbPO4 and Nb2O5 synthetized by sol-gel technique with high surface area and with different crystalline structures (amorphous and nano crystalline), as a heterogeneous catalyst in biodiesel synthesis from commercial soybean oil. The commercial and the synthesized niobium oxide were used checking the effect of morphology and acidity presented in the yield of biodiesel synthesis. The results obtained were compared these results with the use of amorphous niobium oxide and another oxide catalyst. The biodiesel obtained was characterized by gas chromatography system equipped with a FID detector. NbCl5 has presented the best yields of conversion among the other niobium derivatives and potential application in Biodiesel synthesis. (AU)

• FAPESP's process: 16/01599-1 - Studies about the use of NbCl5 in multicomponent reactions for the synthesis of organic dyes
• Grantee: Luiz Carlos da Silva Filho
• Support Opportunities: Regular Research Grants