2014年11月
Quantum Tunneling Hydrogenation of Solid Benzene and Its Control via Surface Structure
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
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- 巻
- 5
- 号
- 21
- 開始ページ
- 3843
- 終了ページ
- 3848
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/jz5019948
- 出版者・発行元
- AMER CHEMICAL SOC
Despite the rapid accumulation of structural information about organic materials, the correlation between the surface structure of these materials and their chemical properties, a potentially important aspect of their chemistry, is not fully understood. Here, we show that the amorphous or crystalline structure of a solid benzene surface controls its chemical reactivity toward hydrogen. In situ infrared spectroscopy revealed that cold hydrogen atoms can add to an amorphous benzene surface at 20 K to form cyclohexane by tunneling. However, hydrogenation is greatly reduced on crystalline benzene. We suggest that the origin of the high selectivity of this reaction is the large difference in geometric constraints between the amorphous and the crystalline surfaces. The present findings can lead us to a more complete understanding of heterogeneous reaction systems, especially those involving tunneling, as well as to the possibility of nonenergetic surface chemical modification without undesired side reactions or physical processes.
- リンク情報
- ID情報
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- DOI : 10.1021/jz5019948
- ISSN : 1948-7185
- Web of Science ID : WOS:000344579500040