VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME OVER SAPO-11 MOLECULAR-SIEVE

Authors
SINGH PS BANDYOPADHYAY R HEGDE SG RAO BS
Citation
Ps. Singh et al., VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME OVER SAPO-11 MOLECULAR-SIEVE, Applied catalysis. A, General, 136(2), 1996, pp. 249-263
Citations number
26
Categorie Soggetti
Chemistry Physical","Environmental Sciences
Journal title
Applied catalysis. A, General → ACNP
ISSN journal
0926860X
Volume
136
Issue
2
Year of publication
1996
Pages
249 - 263
Database
ISI
SICI code
0926-860X(1996)136:2<249:VBROCO>2.0.ZU;2-W
Abstract
SAPO-11 exhibited a high caprolactam yield for the vapour phase Beckma nn rearrangement of cyclohexanone oxime to caprolactam. At 663 K, the oxime conversion is 99.9% with a caprolactam selectivity around 85.7%. The effect of silicon content of the SAPO-11 on the catalytic efficie ncy is compared with aluminosilicate having MFI structure. SAPO-11 is the best catalyst for the reaction among the investigated catalysts, A LPO(4)-11 on silica carrier, silynated zeolite and silynated SAPO-11. Acid sites with medium strength (Si/Al > 10 000) are very active in th e rearrangement reaction.