Oxidative esterification of renewable furfural on gold-based catalysts: Which is the best support?

Gold-based catalysts over different supports were investigated in the oxidative esterification of furfural by employing an efficient and sustainable process. The catalytic performances follow the trend: Zirconia Au > Ceria-Au >> Titania Au. Zirconia came out to be the best support option to promote activity, selectivity and also stability. The chemical and morphological properties observed for zirconia-supported sample seem to fulfill a good compromise between high gold dispersion and the presence of suitable acid base properties, for good selectivity. Moreover, stability and recycling of the catalysts were also investigated. (C) 2013 Elsevier Inc. All rights reserved.