Greener and Sustainable Method for Alkene Epoxidations by Polymer-Supported Mo(VI) Catalysts
Greener and Sustainable Method for Alkene Epoxidations by Polymer-Supported Mo(VI) Catalysts
复制标题
DOI：
10.2202/1542-6580.2125
复制
发表时间：
2010-07
影响因子：
1.6
通讯作者：
K. Ambroziak;R. Mbeleck;B. Saha;D. Sherrington
中科院分区：
文献类型：
--
作者：
K. Ambroziak;R. Mbeleck;B. Saha;D. Sherrington
制备了一种聚苯并咪唑负载Mo(VI) （PBI.Mo）催化剂，并对其进行了表征。PBI的催化活性。在间歇式反应器中，研究了以叔丁基过氧化氢（TBHP）为氧化剂进行烯烃环氧化反应的Mo催化剂。作为烯烃的代表，我们选择了环己烯、柠檬烯、？-蒎烯和1-辛烯（活性较低的末端烯烃）。烯烃的反应活性顺序为：环己烯b>柠檬烯b> ?-蒎烯b> 1-辛烯。每种聚合物催化剂的稳定性是通过在间歇式反应中使用将形成连续过程基础的条件回收样品来评估的。通过从反应上清溶液中分离任何残留物，在去除非均相聚合物催化剂后，然后将残留物用作环氧化反应的潜在催化剂，研究了每种载体中Mo的损失。
A polybenzimidazole supported Mo(VI) (PBI.Mo) catalyst has been prepared and characterised. The catalytic activities of the PBI.Mo catalyst in epoxidation of alkenes with tert-butyl hydroperoxide (TBHP) as an oxidant have been studied under different reaction conditions in a batch reactor. As alkene representatives we have chosen cyclohexene, limonene, ?-pinene and 1-octene (a less reactive terminal alkene). The order of reactivity of the alkenes was found to be: cyclohexene>limonene>?-pinene>1-octene. The stability of each polymer catalyst was assessed by recycling a sample in batch reaction using conditions that will form the basis of the continuous process. The loss of Mo from each support has been investigated by isolating any residue from the reaction supernatant solutions, following removal of the heterogeneous polymer catalyst, and then using the residues as potential catalysts in epoxidation reactions.