A simple and efficient approach for the synthesis of ?-caprolactam via the liquid phase nitrosation of cyclohexane and nitrosyl sulfuric acid in the presence of concentrated sulfuric acid has been developed. A series of novel AlVPO composites were prepared by an impregnation method and the composites were then employed to catalyze the nitrosation reaction of cyclohexane and nitrosyl sulfuric acid. Compared to the reaction using fuming sulfuric acid, the selectivity for the desired product was significantly improved using this one-step catalytic process. This method affords a shortcut to prepare ?-caprolactam and its analogs from cyclohexane.
Corresponding Author(s):
LUO Hean,Email:heanluo@126.com
引用本文:
. One-step synthesis of ?-caprolactam via the liquid phase catalytic nitrosation of cyclohexane in the presence of concentrated sulfuric acid[J]. Frontiers of Chemical Science and Engineering, 2012, 6(4): 389-394.
Kuiyi YOU, Fangfang ZHAO, Xueyan LONG, Pingle LIU, Qiuhong AI, Hean LUO. One-step synthesis of ?-caprolactam via the liquid phase catalytic nitrosation of cyclohexane in the presence of concentrated sulfuric acid. Front Chem Sci Eng, 2012, 6(4): 389-394.
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