Polyol conversions into furanic derivatives on bimetallic catalysts: CuRu, CuPt and RuCu

Cu:Al Nano Catalyst for Selective Hydrogenolysis of Glycerol to 1,2-Propanediol

“…However, hydrogenolysis of glycerol via dehydration is a preferred (Scheme 1) route since [9][10][11] acetol is also an important intermediate in hydrogen production by catalytic steam reforming [12], pyruvaldehyde synthesis through oxidation [13] and as a starting material in various organic transformations [14,15]. Catalyst systems involving various compositions of copper chromite as well as supported noble metals have been reported for the conversion of glycerol to 1,2-PDO in presence of a solvent under high pressure and temperature conditions [9,[16][17][18]. Among noble metals, Pd, Pt, Ru and Rh have been used on various supports for the hydrogenolysis of glycerol [19,20].…”

Synthesis of isosorbide from sorbitol in water over high-silica aluminosilicate zeolites

“…For industrial application, a heterogeneous reaction system has advantages in many points 23 and various types of heterogeneous catalysts have been explored; for example, modified metal 24 oxides [37][38][39][40][41], zeolites [42][43][44][45][46], metal phosphates [47][48][49], supported heteropoly acids [50], 25 supported metals [51][52][53], and ion-exchange resin [54][55][56][57][58][59]. Xiao et al reported that a mesoporous A c c e p t e d M a n u s c r i p t 3 polymer-based catalyst bearing SO 3 H groups efficiently promoted the dehydration of sorbitol in 1 vacuo, achieving ca.…”

Cellulose Conversion to Isosorbide in Molten Salt hydrate Media

“…[24][25][26] The mechanism involves electron acceptor ionic species, strongly interacting with hydroxyl groups, weakening the CÀO bond, and catalyzing the intramolecular nucleophilic substitution (internal dehydration). We assume that in the ZnCl 2 medium the same mechanism is operative.…”