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1. (WO2013159161) NIOBIUM-BASED CATALYSTS FOR CONVERTING GLYCEROL TO ETHERS

Pub. No.:    WO/2013/159161    International Application No.:    PCT/BR2012/000115
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Fri Apr 27 01:59:59 CEST 2012
IPC: B01J 37/12
B01J 23/20
C07C 41/30
Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS
ALVES DE OLIVEIRA, Luiz Carlos
DE FIGUEIREDO PORTILHO, Marcio
FERRAZ DE SOUZA, Wladmir
Inventors: ALVES DE OLIVEIRA, Luiz Carlos
DE FIGUEIREDO PORTILHO, Marcio
FERRAZ DE SOUZA, Wladmir
Title: NIOBIUM-BASED CATALYSTS FOR CONVERTING GLYCEROL TO ETHERS
Abstract:
The present invention relates to a process for producing glycerol derivatives, in particular bi- and tri-ethers of glycerol and cyclic ethers, from commercial glycerine originating from biodiesel synthesis. To achieve this objective, heterogeneous niobium-based catalysts have been developed, which were subsequently modified by the formation of surface peroxo groups. This modification of the catalyst directs the reaction towards condensation of the glycerol with the formation of larger molecules which are used as fuel bio additives.