Glycerol Hydrogenolysis to Propanediols over Ru-Re/SiO2: Acidity of Catalyst and Role of Re

✍ Scribed by Lan MA; Yuming LI; Dehua HE

• Book ID: 104452952
• Publisher: Elsevier Science
• Year: 2011
• Weight: 210 KB
• Volume: 32
• Category: Article
• ISSN: 1872-2067
• DOI: 10.1016/s1872-2067(10)60198-2

✦ Synopsis

The acidic property of Ru-Re/SiO 2 catalysts and the role of Re were investigated. The acidic properties of Ru-Re/SiO 2 , Ru/SiO 2 , and Re/SiO 2 were characterized by temperature programmed desorption of ammonia and in situ IR spectra of pyridine adsorption. Their catalytic performances in glycerol hydrogenolysis were compared. Ru-Re/SiO 2 , Ru/SiO 2 , and Re/SiO 2 possessed acid sites, but the site amounts of Ru-Re/SiO 2 and Re/SiO 2 were much higher than that of Ru/SiO 2 . The activities of Ru-Re/SiO 2 with different Re contents were evaluated. The activity of Ru-Re/SiO 2 increased with the acid amount, which correlated with the amount of Re oxide on the catalyst. The role of Re oxide in Ru-Re/SiO 2 catalyzed glycerol hydrogenolysis was discussed.