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

doi:10.1016/S1872-2067(10)60198-2

Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (5): 872-876.DOI: 10.1016/S1872-2067(10)60198-2

• Research papers • Previous Articles

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

MA Lan1,2, LI Yuming1, HE Dehua1,*

1Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China; 2Institute of Chemical Defence, Beijing 102205, China

Received:2010-12-08 Revised:2011-01-17 Online:2011-05-31 Published:2014-09-29

Abstract

Abstract: The acidic property of Ru-Re/SiO₂ catalysts and the role of Re were investigated. The acidic properties of Ru-Re/SiO₂, Ru/SiO₂, and Re/SiO₂ 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/SiO₂, Ru/SiO₂, and Re/SiO₂ possessed acid sites, but the site amounts of Ru-Re/SiO₂ and Re/SiO₂ were much higher than that of Ru/SiO₂. The activities of Ru-Re/SiO₂ with different Re contents were evaluated. The activity of Ru-Re/SiO₂ increased with the acid amount, which correlated with the amount of Re oxide on the catalyst. The role of Re oxide in Ru-Re/SiO₂ catalyzed glycerol hydrogenolysis was discussed.

Key words: catalyst acidity, ruthenium-rhenium catalyst, rhenium oxide, glycerol hydrogenolysis, propanediols

MA Lan, LI Yu-Ming, HE De-Hua. Glycerol Hydrogenolysis to Propanediols over Ru-Re/SiO₂: Acidity of Catalyst and Role of Re[J]. Chinese Journal of Catalysis, 2011, 32(5): 872-876.

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

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