Journal
CATALYSIS TODAY
Volume 73, Issue 1-2, Pages 23-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0920-5861(01)00514-4
Keywords
vapor phase Beckmann rearrangement; epsilon-caprolactam; high silica MFI; nest silanol
Ask authors/readers for more resources
A high silica MFI zeolite catalyst has been developed for the vapor phase Beckmann rearrangement of cyclohexanone oxime to epsilon-caprolactam. Methanol fed into the reactor with the oxime improves the yield of caprolactam. Methanol is not converted to dimethylether during the reaction. Moreover, when ammonia is fed to the catalyst with cyclohexanone oxime, and methanol, the selectivity remains at a high level, without affecting the conversion. Hence, we conclude that the active sites of high silica MFI are extremely weak acid sites that cannot be detected by ammonia TPD measurement. A fluidized bed reaction system has been developed for the manufacturing process of caprolactam. High quality product is obtained with more than 95% yield. (C) 2002 Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available