Direct preparation of dichloropropanol from glycerol and hydrochloric acid gas using heteropolyacid (HPA) catalyst by heterogeneous gas phase reaction

Acetalisation of glycerol with acetone over zirconia and promoted zirconia catalysts under mild reaction conditions

“…Therefore, the effective utilization of glycerol enlarges the economy of the whole biodiesel production process and the conversion of glycerol to value added chemicals could be in agreement with the perception of green chemistry in terms of the exploitation of renewable resources [5]. In recent years many studies have been focused on the transformation of glycerol by various catalytic processes [6,7] involving hydrogenolysis to obtain 1,2-propanediol and 1,3-propanediol; oxidation to obtain dihydroxyacetone, glyceraldehyde, glyceric acid, glycolic acid and hydroxypyruvic acid; dehydration to yield acrolein or 3-hydroxypropionaldehyde; fermentation towards 1,3-propanediol; polymerization to obtain polyglycerols and polyglycerol esters [8][9][10][11][12]. Glycerol is also a good platform for other chemicals, especially oxygenated compounds such as acetals and ketals.…”

Recent Advances in Catalytic Conversion of Glycerol

“…In recent studies, a series of H 3 PMo 12-x W x O 40 (x = 0-12), H 4 SiMo 12-x W x O 40 (x = 0-12), H 3+x PW 12-x V x O 40 (x = 0-3), and H 3+x PMo 12-x V x O 40 (x = 0-3) heteropolyacid catalysts were tested for the catalytic chlorination of glycerol in a batch reactor. Comparatively, H 3 PW 12 O 40 with the highest acid strength showed the best catalytic performances (392,393). The H 3 PW 12 O 40 catalysts were able to be regenerated by evaporating the solution after the reaction, followed by oxidative calcination and recrystallization.…”

Conversion of crude and pure glycerol into derivatives: A feasibility evaluation

“…Approximately 49.7% of DCH can be obtained using a heteropolyacid catalyst (H 3 PW 12 O 40 ) at 110°C, 5 bar pressure, and 3 h reaction time [92]. Alternatively, Song et al [93] directly prepared DCP in the presence of a H 3 PW 12 O 40 catalyst in a solid-gas phase reactor at 250°C; however, the resulting conversion is approximately 50.9%, which is very low. A comparison of the performance of CG and PG in ECH production is presented in Table 9.…”