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选择控制的alpha-和beta-MnO(2) 单晶纳米线的热水合成

Xun Wang1, Yadong Li

  • 1Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.

Journal of the American Chemical Society
|March 21, 2002
PubMed
概括

研究人员开发了一种选择性控制的热水法,以制备α-和β-二氧化 (MnO2) 单晶纳米线. 离子度,特别是 (NH4+) 和硫酸盐 (SO42-),影响生成的MnO2纳米线的晶体结构和形态.

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Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...