Beckmann rearrangement of cyclohexanone oxime over Hβ zeolite and Hβ zeolite-supported boride

被引:32
|
作者
Zhang, YJ
Wang, YQ [1 ]
Bu, YF
Mi, ZT
Wu, W
Min, E
Han, S
Fu, SB
机构
[1] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China
[2] SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China
[3] Yingshan Petrochem Plant, Res Inst, Yueyang 414003, Peoples R China
关键词
H beta zeolite; H beta zeolite-supported boride; cyclohexanone oxime; Beckmann rearrangement;
D O I
10.1016/j.catcom.2004.10.010
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Ho was synthesized by a hydrothermal method followed by ion exchange and used as support for the preparation of a Hbeta zeolite-supported boride by impregnating H3BO3. The two catalysts were characterized by BET surface area measurement, XRD, IR, pyridine-TPD, etc. and studied in the Beckmann rearrangement of cyclohexanone oxime. In comparison with pure Hbeta, the loadings of 9.09 wt% B2O3 lead to lower BET area, more total acid sites, more weak acid sites, especially more weak Bronsted acid sites, and slow deactivation in the Beckmann rearrangement. The results indicated that for the catalysts having the structure of beta zeolite, the suitable acid sites for the Beckmann rearrangement might be weak Bronsted acid. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:53 / 56
页数:4
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