The catalytic oxidation of 1-phenylethanol over SiO2 supported manganese oxide nanocluster prepared by PVP stabilized colloidal Mn as precursor
The catalytic oxidation of 1-phenylethanol over SiO2 supported manganese oxide nanocluster prepared by PVP stabilized colloidal Mn as precursor
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DOI：
10.1016/j.cattod.2019.10.020
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发表时间：
2020-08
期刊：
影响因子：
5.3
通讯作者：
Kyoko Nakamura;N. Ichikuni;Takayoshi Hara;T. Kojima;S. Shimazu
中科院分区：
文献类型：
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作者：
Kyoko Nakamura;N. Ichikuni;Takayoshi Hara;T. Kojima;S. Shimazu
以聚乙烯吡咯烷酮（PVP）稳定的Mn胶体为前驱体，制备了负载型MnOx纳米团簇。将所得催化剂用于1-苯乙醇氧化制苯乙酮。因此，所制备的催化剂对于使用分子氧而不使用任何添加剂（例如碱试剂）氧化1-苯基乙醇是活性的。XAFS和TEM研究表明，所制备的催化剂上锰氧化物的价态和锰氧化物的团簇尺寸是可控的。此外，Mn物种的化学状态随Mn的负载量而变化。
Supported MnOx nanocluster was prepared by PVP-stabilized Mn colloid as a precursor. Obtained catalysts were applied for 1-phenylethanol oxidation to produce acetophenone. Consequently, prepared catalysts were active for the oxidation of 1-phenylethanol using molecular oxygen without any additives such as base reagents. XAFS and TEM measurements revealed that the valence of manganese oxide and cluster size of manganese oxide on prepared catalysts can be controlled. In addition, the chemical state of Mn species varied with the loading amount of Mn.