DICP OpenIR
Subject Area物理化学
Catalysis of the Confined System
Bao XH(包信和)
Source PublicationProceedings of TOCAT6/APCAT5
Conference NameSixth Tokyo Conference on Advanced Catalytic Science and Technology & Fitth Asia Pacific Congress on Catalysis
Conference Date2010-7-18
2011
Conference Place札幌
Alternative Title限域体系的纳米催化
Pages50-1
Publisher待补充
Publication Place待补充
Cooperation Status分会特邀报告
Department502
Funding Organization日本催化学会
AbstractIt is becoming a common understanding that the nano-confinement in catalyst structures pays in some way very important roles in creating active sites ad stabilizing the active configurations. In our previous literatures, we have reported a unique effect of the synergetic confinement between the concave walls of CNTs and the nano-particles inside its channel of CNT show a distinct decrease of their reduction temperature, compared to those lie on its exernal surface. The facile reduction of the oxides in the channels effects strikingly on the catalytic reactions, in paricular on those driven by redox process. For instance, the CNT ecasulated Rh-Mn and ferric oxide catalysts showed the significant enhancement of the catalytic performances in conversing syngas into C2 oxygenates and liquid oil, respectively. In the presentation, besides a short introduction on the catalsis modified by the CNT confinement, I will show also one of our recent results, which demonstates the unique catalysis of selective oxidation by an interface confined ferrous sites on Pt surface. Fe-containing cataysts are highly efficient and active in broad reange of enzyme and homogeneous catalytic processed. The key structural feature in thiese enzymes and metal complexes relies on two aspects: presence of coordinatively unsaturated Fe(CUF) sites as the active centers and stabilization of the unstable or metastable Fe states through confinement in nanospaces, such as proteins and ligands. Preparation of an analogous ensemble in hererogeneous supported catalysts, which accounts for 80% catalytic processesin industrial chemistry, is of great significance. This, however, remains challenging because of the unknown active centers, difficulty of molecular modeling fr reatinoal design due to computer capacity for evolved systems, and the reproducible synthesis of empirically derivd caralyst formulations.; It is becoming a common understanding that the nano-confinement in catalyst structures pays in some way very important roles in creating active sites ad stabilizing the active configurations. In our previous literatures, we have reported a unique effect of the synergetic confinement between the concave walls of CNTs and the nano-particles inside its channel of CNT show a distinct decrease of their reduction temperature, compared to those lie on its exernal surface. The facile reduction of the oxides in the channels effects strikingly on the catalytic reactions, in paricular on those driven by redox process. For instance, the CNT ecasulated Rh-Mn and ferric oxide catalysts showed the significant enhancement of the catalytic performances in conversing syngas into C2 oxygenates and liquid oil, respectively. In the presentation, besides a short introduction on the catalsis modified by the CNT confinement, I will show also one of our recent results, which demonstates the unique catalysis of selective oxidation by an interface confined ferrous sites on Pt surface. Fe-containing cataysts are highly efficient and active in broad reange of enzyme and homogeneous catalytic processed. The key structural feature in thiese enzymes and metal complexes relies on two aspects: presence of coordinatively unsaturated Fe(CUF) sites as the active centers and stabilization of the unstable or metastable Fe states through confinement in nanospaces, such as proteins and ligands. Preparation of an analogous ensemble in hererogeneous supported catalysts, which accounts for 80% catalytic processesin industrial chemistry, is of great significance. This, however, remains challenging because of the unknown active centers, difficulty of molecular modeling fr reatinoal design due to computer capacity for evolved systems, and the reproducible synthesis of empirically derivd caralyst formulations.
Language英语
Document Type会议论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/115895
Collection中国科学院大连化学物理研究所
Corresponding AuthorBao XH(包信和)
Recommended Citation
GB/T 7714
Bao XH. Catalysis of the Confined System[C]. 待补充:待补充,2011:50-1.
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