Sorbitol hydrogenolysis to glycols by supported ruthenium catalysts

Supported Ru catalysts were prepared by wet impregnation to evaluate the role of different oxide supports （Al2O3, SiO2, TiO2, ZrO2） in sorbitol hydrogenolysis to glycols. X-ray diffraction, transmis-sion electron microscopy, hydrogen chemisorption, X-ray photoelectron spectroscopy, and NH3 temperatu...

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Bibliographic Details
Published inChinese journal of catalysis Vol. 35; no. 5; pp. 614 - 621
Main Authors Leo, Inmaculada Murillo, Granados, Manuel Lopez, Fierro, Jose Luis Garcia, Mariscal, Rafael
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2014
Group of Sustainable Energy and Chemistry, Institute of Catalysis and Petrochemistry CSIC, C/Marie Curie 2, Cantoblanco, 28049 Madrid, Spain
Subjects
Al2O3催化剂
Glycols
Hydrogenolysis
Oxide supports
Ru
Ruthenium
Sorbitol
X射线光电子能谱
二元醇
山梨醇
氢解
负载钌催化剂
过负载
透射电子显微镜
Sorbitol
Oxide supports
Glycols
Ruthenium
Hydrogenolysis
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Summary:Supported Ru catalysts were prepared by wet impregnation to evaluate the role of different oxide supports （Al2O3, SiO2, TiO2, ZrO2） in sorbitol hydrogenolysis to glycols. X-ray diffraction, transmis-sion electron microscopy, hydrogen chemisorption, X-ray photoelectron spectroscopy, and NH3 temperature-programmed desorption were used to characterize the catalysts, which were active in the hydrogenolysis of sorbitol. The support affected both the physicochemical properties and cata-lytic behavior of the supported Ru particles. The characterization results revealed that the Ru/Al2O3 catalyst has a high surface acidity, partially oxidized Ru species on the surface, and a higher surface Ru/Al atomic ratio, which gave it the highest selectivity and yield to glycols.
Bibliography:Sorbitol Glycols Hydrogenolysis Ruthenium Oxide supports
21-1195/O6
Supported Ru catalysts were prepared by wet impregnation to evaluate the role of different oxide supports （Al2O3, SiO2, TiO2, ZrO2） in sorbitol hydrogenolysis to glycols. X-ray diffraction, transmis-sion electron microscopy, hydrogen chemisorption, X-ray photoelectron spectroscopy, and NH3 temperature-programmed desorption were used to characterize the catalysts, which were active in the hydrogenolysis of sorbitol. The support affected both the physicochemical properties and cata-lytic behavior of the supported Ru particles. The characterization results revealed that the Ru/Al2O3 catalyst has a high surface acidity, partially oxidized Ru species on the surface, and a higher surface Ru/Al atomic ratio, which gave it the highest selectivity and yield to glycols.
ISSN:0253-9837
1872-2067
1872-2067
DOI:10.1016/S1872-2067(14)60086-3