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dc.contributor.authorLi, Bodong
dc.contributor.authorWang, Juan
dc.contributor.authorYuan, Youzhu
dc.contributor.author袁友珠
dc.contributor.authorAriga, Hiroko( Hokkaido Univ, Catalysis Res Ctr)
dc.contributor.authorTakakusagi, Satoru( Hokkaido Univ, Catalysis Res Ctr)
dc.contributor.authorAsakura, Kiyotaka( Hokkaido Univ, Catalysis Res Ctr)
dc.date.accessioned2012-02-21T07:27:28Z
dc.date.available2012-02-21T07:27:28Z
dc.date.issued2011-09-26
dc.identifier.citationACS Catal., 2011, 1 (11):1521–1528zh_CN
dc.identifier.issn2155-5435
dc.identifier.urihttp://dx.doi.org/doi:10.1021/cs200386q
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/11471
dc.identifier.uriWOS:000296598000009
dc.description.abstractCarbon nanotube-supported RuFe bimetallic catalysts (RuFe/CNT) were prepared through a coimpregnation method for the selective hydrogenolysis of 20 wt % glycerol aqueous solution to produce glycols (1,2-propanediol and ethylene glycol). The Ru/CNT catalyst with smaller Ru nanoparticles (NPs) was significantly active for C-C bond cleavage, giving a considerable amount of CH(4) in the hydrogenolysis product. The RuFe/CNT catalyst with bimetallic NPs having an average size similar to Ru/CNT was more efficient for C-O bond cleavage, affording higher selectivity to glycols. Almost 100% glycerol conversion and over 75% selectivity to glycol could be obtained using the optimized RuFe/CNT catalyst under relatively mild conditions. The bimetallic RuFe/CNT catalyst was structurally robust and showed excellent reusability. Transmission electron microscopic images revealed that, when an appropriate amount of Fe entity was added, the RuFe bimetallic NPs were uniformly dispersed on the CNT surfaces and had an average size of similar to 3 nm. X-ray photoelectron spectroscopy indicated that a portion of the Fe species were interacted with Ru moieties, forming Ru-Fe alloys on the Ru domain, whereas other Fe species were in the forms of iron oxides, likely FeO and FeO(1+x) (0 < x < 0.5), mostly presenting on the periphery of RuFe bimetallic NPs. The occurrence of iron oxide species is crucial for the stability of RuFe bimetallic NPs during catalytic runs; but excess iron oxides block the surfaces of RuFe bimetallic NPs, resulting in a decrease in catalytic activity. Higher performance of the RuFe/CNT catalyst is attributed to the synergistic effects of the formation of Ru-Fe alloys and the interactions between the RuFe bimetallic NPs and iron oxides on CNT surfaces.zh_CN
dc.description.sponsorshipNational Basic Research Program of China[2011CBA00508]; National Natural Science Foundation of China[20873108, 20923004]; Program for Changjiang Scholars and Innovative Research Team in University[IRT1036]; Catalysis Research Center, Hokkaido University[10B0043]; Japan Society for the Promotion of Science (JSPS)zh_CN
dc.language.isoenzh_CN
dc.publisherAMER CHEMICAL SOCzh_CN
dc.subjectGlycerolzh_CN
dc.subjectHydrogenolysiszh_CN
dc.subjectCarbon nanotubezh_CN
dc.subjectBimetallic catalystzh_CN
dc.subjectRu-Fe alloyzh_CN
dc.subjectGlycolzh_CN
dc.titleCarbon Nanotube-Supported RuFe Bimetallic Nanoparticles as Efficient and Robust Catalysts for Aqueous-Phase Selective Hydrogenolysis of Glycerol to Glycolszh_CN
dc.typeArticlezh_CN


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