DICP OpenIR
Subject Area物理化学
Confinement effects of carbon nanotubes in catalytic energy conversion processes
Pan XL(潘秀莲); Bao XH(包信和)
Source PublicationAbstract Book
Conference NameInternational Conference on Clean Energy Science 2011
Conference Date2011-4-10
2011
Conference Place大连
Pages164-0
Publisher待补充
Publication Place待补充
Cooperation Status墙报
Department502组
Funding Organization大连化物所
AbstractCarbon materials have properties different from conventional oxides in catalysis, in particular as catalyst supports. Recently, carbon nanotubes (CNTs) attract attention with their well defined tubular morphology and their electron structure in the graphene walls, where π electrons shift from the inside to the outside due to the curvature. This provides an intriguing confinement environment for nanocatalysts and catalytic reactions inside such small cavities. Using Fe as a probe, it is found that the redox properties of iron oxide and metallic iron are modified when they are confined inside the CNT channels with respect to those dispersed on the outer surface of CNTs. As a result, its activity for Fischer-Tropsch synthesis is obviously enhanced benefiting from formation of more catalytically active iron carbides under reaction conditions. Similarly, a significant enhancement of the catalytic activity of Rh particles confined inside nanotubes for the conversion of syngas to C2 oxygenates has also been observed compared to the outside catalyst although the latter is much better accessible to reactants. The confinement effects of CNTs in other catalytic energy conversion processes are also reported recently.; Carbon materials have properties different from conventional oxides in catalysis, in particular as catalyst supports. Recently, carbon nanotubes (CNTs) attract attention with their well defined tubular morphology and their electron structure in the graphene walls, where π electrons shift from the inside to the outside due to the curvature. This provides an intriguing confinement environment for nanocatalysts and catalytic reactions inside such small cavities. Using Fe as a probe, it is found that the redox properties of iron oxide and metallic iron are modified when they are confined inside the CNT channels with respect to those dispersed on the outer surface of CNTs. As a result, its activity for Fischer-Tropsch synthesis is obviously enhanced benefiting from formation of more catalytically active iron carbides under reaction conditions. Similarly, a significant enhancement of the catalytic activity of Rh particles confined inside nanotubes for the conversion of syngas to C2 oxygenates has also been observed compared to the outside catalyst although the latter is much better accessible to reactants. The confinement effects of CNTs in other catalytic energy conversion processes are also reported recently.
Document Type会议论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/116126
Collection中国科学院大连化学物理研究所
Corresponding AuthorPan XL(潘秀莲); Bao XH(包信和)
Recommended Citation
GB/T 7714
Pan XL,Bao XH. Confinement effects of carbon nanotubes in catalytic energy conversion processes[C]. 待补充:待补充,2011:164-0.
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