Sulfonated niobia and pillared clay as catalysts in etherification reaction of glycerol

Author(s)

Celdeira, Patricia A. ^[1] ; Goncalves, Maraisa ^[1] ; Figueiredo, Fldvia C. A. ^[1] ; Dal Bosco, Sandra Maria ^[1] ; Mandelli, Dalmo ^[1] ; Carvalho, Wagner A. ^[1]

Affiliation

^[1] Univ Fed ABC, Ctr Ciencias Nat Humanas, BR-09210170 Santo Andre, SP - Brazil

• Document type: Journal article
• Source: APPLIED CATALYSIS A-GENERAL; v. 478, p. 98-106, MAY 20 2014.
• Web of Science Citations: 22

Abstract

Sulfonated niobia (HY-340 CBMM) and pillared clay (Fluka) were tested in the catalytic conversion of glycerol by etherification reactions. The solids were treated with concentrated fuming sulfuric acid (AS100 and NS100), and a 30% aqueous solution of this acid (AS30 and NS30). Both the presence of sulfur and the increase in the acidity of the solids demonstrate the suitability of the sulfonation process, especially in samples treated with concentrated fuming sulfuric acid. The best catalyst for the reaction of etherification with tert-butyl alcohol was AS100, with a glycerol conversion of 95% after 5 h at 393 K and yield of 60.3, 33.2 and 5.4%, respectively for mono-tert-butyl-glycerol (MTBG), di-tert-butyl-glycerol (DTBG) and tri-tert-butyl-glycerol (TTBG). (C) 2014 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 09/07125-8 - Catalytic conversion of glycerol mediated by pillared clays, activated carbons and conducting polymers
• Grantee: Flávia Camargo Alves Figueiredo
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 11/14626-3 - Catalytic convertion of glycerol in liquid and vapor phase to products of higher commercial value
• Grantee: Wagner Alves Carvalho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 11/22264-4 - Utilization of lignocelulosic and glycerol wastes for production of catalysts with acidic properties
• Grantee: Maraisa Gonçalves
• Support Opportunities: Research Grants - Young Investigators Grants