Presentation Information
[2G01]Development of Al2O3 supported Zn modified NiOx nanocluster catalyst for aerobic 1-phenylethanol oxidation.
*Daichi Suzuki1, Takayoshi Hara1, Nobuyuki Ichikuni1 (1. Graduate School of Science and Engineering, Chiba University)
The oxidation of alcohols to aldehydes or ketones is an essential chemical process. For this reaction, development of low cost but highly efficient catalysts are strongly desired. In this work, Ni, which is an inexpensive and abundant element, was focused on as an active element. To enhance the catalytic activity of Ni, addition of Zn into nanoclusterized NiOx species was exemplified. The catalyst was applied to the oxidation of 1-phenylethanol, and the acetophenone yield was found to increase from 48.0 % to 56.8 % with increasing Zn content. X-ray absorption fine structure (XAFS) measurements revealed that the white line peak in the Ni K-edge XANES shifted to higher energy by Zn incorporation, suggesting the formation of more highly oxidized Ni species. In contrast, the Zn K-edge XANES exhibited a shoulder peak around 9670 eV in the presence of Ni. These electronic interactions are considered to play a key role in enhancing the catalytic activity.