Cellulose hydrolysis-hydrogenolysis to ethyleneglycol and propyleneglycol over Ru and heteropolyacid catalysts

Еthylene and propylene glycols (EG and PG) are widely used in industry to produce cooling systems and other valuable chemical products. But PG is non-toxic, therefore it is used in industries where EG can not be used: pharmaceutical, food, etc. This polyols produced by "one-pot" method, which is one of the promising and effective methods for producing alcohols from cellulose under harsh conditions. The purpose of this study was to determine the optimal composition of the solid bifunctional catalyst and the conditions of its preparation for the hydrolysis-hydrogenolysis of cellulose. Catalists are Ru-HPA/ZrO[2], RuHPA/Nb[2]O[5] and Ru/CsHPK. As a result of the study, the most promising catalyst system is 1%Ru/Cs[3.5]H[0.5]SiW[12]O[40]. In the presence of 1%Ru/CsHPA, the yield of 25% EG and 11% PG was detected (EG and PG selectivity is 60 and 27%). The activity of the catalysts was studied in the presence of Ca(OH)[2]

Gemcitabine: a phase II study in patients with advanced renal cancer

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