Premium
Versatile Hybrid Niobium Pentoxide‐Based Catalyst Applied in Reactions of the Fuels Industry: Oleic Acid Esterification and Quinoline Oxidation
Author(s) -
Sturt Natália Rodrigues Marques,
Moura Flávia Cristina Camilo
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202100218
Subject(s) - niobium pentoxide , catalysis , quinoline , oleic acid , methanol , biodiesel , chemistry , organic chemistry , niobium oxide , primary (astronomy) , niobium , biochemistry , physics , astronomy
Hybrid niobium‐based catalysts were synthesized and applied in two kinds of reactions: oleic acid esterification to produce biodiesel and oxidation of quinoline, an important contaminant of fossil fuels. Niobium oxides were functionalized with p ‐toluenesulfonic acid, which conferred amphiphilic properties on the materials and an increase in Brønsted acidic sites due to the incorporation of sulfo groups on the material surface. The oleic acid esterification reaction with methanol showed very high efficiency of the hybrid material with 90 % conversion, even after three reuse cycles, under very mild conditions. Moreover, the catalyst was capable of promoting quinoline oxidation in a biphasic reaction.