DEVELOPMENT OF ADVANCED ZEOLITE CATALYSTS FOR THE VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME

Authors
DAI LX IWAKI Y KOYAMA K TATSUMI T
Citation
Lx. Dai et al., DEVELOPMENT OF ADVANCED ZEOLITE CATALYSTS FOR THE VAPOR-PHASE BECKMANN REARRANGEMENT OF CYCLOHEXANONE OXIME, Applied surface science, 121, 1997, pp. 335-338
Citations number
11
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
Applied surface science → ACNP
ISSN journal
01694332
Volume
121
Year of publication
1997
Pages
335 - 338
Database
ISI
SICI code
0169-4332(1997)121:<335:DOAZCF>2.0.ZU;2-V
Abstract
The vapor phase Beckmann rearrangement of cyclohexanone oxime to epsil on-caprolactam catalyzed by various zeolites was studied. The catalyti c performance was greatly affected by both the zeolite structure and d iluent solvent. When 1-hexanol was used in place of benzene, the catal ytic performance of all catalysts except silicalite-1 was greatly impr oved. In particular, the selectivity and stability of H-LTL and H-OFF- ERI zeolites remarkably increased; both catalysts exhibited ca. 100% o xime conversion and epsilon-caprolactam selectivity of > 95% for 6 h. (C) 1997 Elsevier Science B.V.