Oxidation of hydroquinones to benzoquinones with hydrogen peroxide using catalytic amount of silver oxide under batch and continuous-flow conditions
Oxidation of hydroquinones to benzoquinones with hydrogen peroxide using catalytic amount of silver oxide under batch and continuous-flow conditions
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DOI：
10.1016/j.jcat.2010.02.015
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发表时间：
2010-04-12
影响因子：
7.3
通讯作者：
Sartori, Giovanni
中科院分区：
文献类型：
--
作者：
Derikvand, Fatemeh;Bigi, Franca;Sartori, Giovanni
氧化银（Ag2O）可作为非均相催化剂，在30% aq的H2O2条件下将对苯二酚氧化为相应的苯醌。研究了Ag2O在间歇式条件下对甲基对苯二酚与H2O2模型反应的催化性能。结果表明，在环境友好的条件下，该反应可在室温下高收率、高选择性地进行。真正的多相催化剂可以通过过滤回收并重复使用至少五次，得到同样优异的结果（类似于95%的收率，类似于98%的选择性）。该催化剂可以装在管式反应器中，在连续流动条件下使用，也能得到同样好的效果。(C) 2010爱思唯尔公司版权所有。
Silver oxide (Ag2O) can be utilized as heterogeneous catalyst in the oxidation of hydroquinones to the corresponding benzoquinones with 30% aq. H2O2. The catalytic properties of Ag2O have been explored in the model reaction of methylhydroquinone with H2O2 performed under batch conditions. Results show that the reaction can be carried out in high yield and selectivity at room temperature under environmentally friendly conditions. The truly heterogeneous catalyst can be recovered by filtration and reused for at least five times, giving the same excellent results (similar to 95% yield, similar to 98% selectivity). The catalyst can be packed in a tubular reactor and utilized under continuous-flow conditions giving similar good results. (C) 2010 Elsevier Inc. All rights reserved.