One-pot green synthesis of propylene oxide using in situ generated hydrogen peroxide in carbon dioxide
One-pot green synthesis of propylene oxide using in situ generated hydrogen peroxide in carbon dioxide
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DOI：
10.1039/b803847c
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发表时间：
2008-01-01
期刊：
影响因子：
9.8
通讯作者：
Beckman, Eric J.
中科院分区：
文献类型：
--
作者：
Chen, Qunlai;Beckman, Eric J.
在（0.2%Pd +0.02%Pt）/TS-1催化剂上，以压缩（超临界或液态）CO2为溶剂，少量水和甲醇为助溶剂，采用原位生成的H2 O2一锅法绿色合成环氧丙烷，环氧丙烷收率为23%，选择性为82%。抑制剂的加入有效地抑制了一些常见的副反应，包括丙烯的加氢、环氧丙烷的水解以及环氧丙烷与甲醇之间的反应。这种抑制作用是由于缓蚀剂与TS-1之间的相互作用导致其表面酸性被中和。
In the one-pot green synthesis of propylene oxide using in situ generated hydrogen peroxide, a propylene oxide yield of 23% with 82% selectivity was achieved over a ( 0.2% Pd + 0.02% Pt)/TS-1 catalyst by using compressed (supercritical or liquid) carbon dioxide as the solvent and small amounts of water and methanol as co-solvents. The addition of an inhibitor effectively suppressed a number of common side-reactions, including the hydrogenation of propylene, the hydrolysis of propylene oxide and the reaction between propylene oxide and methanol. This suppression effect is due to the interaction between the inhibitor and TS-1 leading to the neutralization of its surface acidity.