FTIR study on deactivation of sulfonyl chloride functionalized ionic materials as dual catalysts and media for Beckmann rearrangement of cyclohexanone oxime
FTIR study on deactivation of sulfonyl chloride functionalized ionic materials as dual catalysts and media for Beckmann rearrangement of cyclohexanone oxime
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DOI：
10.1016/j.molcata.2005.04.044
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发表时间：
2005-08
影响因子：
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通讯作者：
Zhengyin Du;Zuopeng Li;Yanlong Gu;Juan Zhang;Youquan Deng
中科院分区：
文献类型：
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作者：
Zhengyin Du;Zuopeng Li;Yanlong Gu;Juan Zhang;Youquan Deng
以几种新型磺酰氯功能化离子材料为介质和催化剂，在温和条件下进行了环己酮肟的Beckmann重排反应，获得了满意的结果。讨论了各参数的影响。此外，利用FTIR光谱和质量平衡计算研究了离子液体催化体系在循环过程中的失活。碱性产物对酸性离子物质的捕集被证明是这类物质再利用中遇到困难的主要原因。探讨了可能的机理。
Several novel sulfonyl chloride functionalized ionic materials were used as media and catalysts for Beckmann rearrangement of cyclohexanone oxime and satisfactory results were achieved under mild conditions. The effects of all parameters were discussed. Moreover, the deactivation of ionic liquid catalytic system during the recycle was investigated by using FTIR spectroscopy and mass balance calculation. The trapping of acidic ionic material with basic product is proved to be mainly responsible for the difficulties encountered in the reuse of this type of material. A possible mechanism was conjectured.