摘要
Porous Pt-Fe bimetallic nanocrystals have been synthesized via self-assembly and can effectively facilitate the synthesis of 2-propanol from acetone. The bimetallic catalyst has three--dimensional channels and shows turnover frequencies （TOFs） of up to 972 h^-1 for a continuous process more than 50 h. Preliminary mechanistic studies suggest that the high reactivity is related to the interface consisting of a bimetallic Pt-Fe alloy and Fe2O3-x. An understanding of real catalytic behavior and the catalytic mechanism based on model systems has been shown to help fabricate an improved Pt/Fe3O4 catalyst with increased activity and lifetime which has great potential for large-scale industrial applications.
多孔的 Pt-Fe 二金属的 nanocrystals 被综合了经由自己组装并且能有效地从丙酮便于 2-propanol 的合成。二金属的催化剂为一个连续过程有三维的隧道和多达 972 h <sup>1</sup> 的表演周转频率(TOF ) 超过 50 h。初步的机械学的研究建议高反应与由二金属的 Pt-Fe 合金和 Fe <sub>2</sub 组成的接口有关 > O <sub>3x </sub> 。一基于模型系统理解真实催化行为和催化机制被显示了帮助制作改进 Pt/Fe <sub>3</sub > 有为大规模工业应用有大潜力的增加的活动和一生的 O <sub>4</sub> 催化剂。
基金
This work was supported by the National Basic Research Program of China （Nos. 2011CB932401, 2011CBA00500, and 2012CB224802）, and the National Natural Science Foundation of China （Nos. 21221062, 21171105, 21322107 and 21131004）.
