Production of 1,2-propanediol via glycerol hydrogenolysis in vapor phase over cu-mg-al- effect of Mg/Cu ratio

GERONIMO CANESI; NORMA AMADEO,; MATIAS JOBBAGY; ML DIEUZEIDE

SAN DIEGO

Congreso; 17th International Congress On Catalysis i; 2020

Biodiesel is mainly produced by the transesterification of fatty acids, of vegetal or animal origin. The main by-product of this process is glycerol, one mol of glycerol is produced every three moles of methyl ester; which is equivalent to 10% of the total product weight approximately [1, 2]. As a consequence of the growing demand of biodiesel, a surplus offer of glycerol has been generated, causing a sharp diminish of the international price of glycerol. Therefore, in this context it is necessary to develop processes to obtain chemicals of higher aggregated value in order to reduce the cost of biodiesel production, such as the hydrogenolysis of glycerol to obtain 1,2-propanediol (1,2-PDO) [1-2]. Previously in our group, we have studied the glycerol hydrogenolysis to 1,2-PDO over Cu based catalyst supported over commercial alumina [1], mesoporous alumina [2] and commercial alumina modified with magnesium [3]. The main conclusion of these previous works has been that in order to promote 1,2-PDO production it is necessary the presence of highly dispersed CuO phase. Based on this, the aim of the present work is towe have perform synthesized the hydrogenolysis of glycerol on Cu-Mg-Al derived from layered double hydroxides (LDHS) precursor synthetized by urea hydrolysis method, in order to obtained catalysts with higher Copper dispersion.Therefore, the aim of this work is to perform the hydrogenolysis of glycerol to 1,2-PDO over Cu-Mg-Al catalysts derived from LDHs obtained by urea hydrolysis method. Inand particularto study , the effect of Mg/Cu ratio over textural and structural characteristics of the solids and over their catalytic performance.