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4284071 
Journal Article 
Characterization of Ru/Al2O3 System Prepared by Adsorption-Precipitation Method 
Wang, Lei; Abudukelimu, N; Gao, Z; Eli, W 
2014 
Yes 
Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 
26 
10 
3021-3024 
WOS:000337769300048 
Alumina supported Ru catalysts with different metal content were prepared via the adsorption precipitation Method using RuCl3 as the precursor and characterized by temperature-programmed reduction and XRD techniques. These catalysts were evaluated using selective. hydrogenation of dimethyl maleate as a probe reaction and results revealed that :superior catalytic performances were obtained at mild hydrogenation conditions (1.0 MPa and 70 degrees C). From the temperature programmed reduction results, several states of ruthenium,on the support can be discerned and the proportion of ruthenium species reducible at the low temperature (95 +/- 5 degrees C) decreased With increasing ruthenium loading and was largely influenced by pretreatment conditions It has been confirmed that ruthenium species that can be reduced at low temperature may Mainly contributed to the catalytic activity. On the basis of the above findings, effective turnover number was introduced to better evaluate the catalytic performance. 
Adsorption-precipitation; Ru/Al2O3; Temperature-programmed reduction; Dimethyl maleate