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623959 
Journal Article 
One-step synthesis of ε-caprolactam from cyclohexane and nitrosyl sulfuric acid catalyzed by VPO supported transition metal composites 
You, K; Mao, L; Chen, L; Yin, D; Liu, P; Luo Ha 
2008 
Yes 
Catalysis Communications
ISSN: 1566-7367 
9 
11/12 
2136-2139 
WOS:000257539800012 
Abstract: A series of transition metal-doped VPO composite catalysts were prepared by impregnating method, and were employed to catalyze reaction of cyclohexane with nitrosyl sulfuric acid in the presence of fuming sulfuric acid. To our delight, ε-caprolactam was directly obtained from such one-step catalytic process. It was found that Mn/AlVPO gave the best results with 9.8% of conversion and 72.9% of selectivity to ε-caprolactam among present composite catalysts. While the conversion and selectivity are not high at this time to be commercially viable, this discovery establishes a potential new one-step process for making ε-caprolactam from cyclohexane. [Copyright 2008 Elsevier] Copyright of Catalysis Communications is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts) 
CAPROLACTAM; SULFURIC acid; METALLIC composites; CYCLOHEXANE