Solvent-free oxidation of alcohols catalyzed by an efficient and reusable heteropolyphosphatotungstate
Solvent-free oxidation of alcohols catalyzed by an efficient and reusable heteropolyphosphatotungstate
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DOI：
10.1016/j.catcom.2006.02.020
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发表时间：
2007-03
影响因子：
3.7
通讯作者：
Sheng-jun Zhang;Shuang Gao;Zuwei Xi;Jie Xu
中科院分区：
文献类型：
--
作者：
Sheng-jun Zhang;Shuang Gao;Zuwei Xi;Jie Xu
在无溶剂条件下，以过氧化氢水溶液为氧化剂，十六烷基三甲基铵杂多磷钨酸盐(n-C16H33N(CH3)3)3[PW4O16]为催化剂，可有效地将仲醇氧化成酮。反应温度为90℃时，乙醇在0.5mol%(以过氧化氢摩尔计)以上的催化剂上氧化得到相应的酮，产率达92%以上，选择性达97%以上。催化剂可重复使用而不损失选择性。
With aqueous hydrogen peroxide as oxidant, secondary alcohols could be efficiently oxidized to ketones in the presence of hexadecyl trimethyl ammonium heteropolyphosphatotungstate ((n-C16H33N(CH3)3)3[PW4O16]) under solvent-free conditions. The oxidation of alcohol over 0.5mol% (based on molar amount of hydrogen peroxide) catalyst occurred at 90°C to give the corresponding ketones with above 92% yield and 97% selectivity. The catalyst could be reused without loss of selectivity.