Development of advanced zeolite catalysts for the vapor phase Beckmann rearrangement of cyclohexanone oxime
Development of advanced zeolite catalysts for the vapor phase Beckmann rearrangement of cyclohexanone oxime
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DOI：
10.1016/s0169-4332(97)00320-6
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发表时间：
1997-11
影响因子：
6.7
通讯作者：
L. Dai;Y. Iwaki;Katsuyuki Koyama;T. Tatsumi
中科院分区：
文献类型：
--
作者：
L. Dai;Y. Iwaki;Katsuyuki Koyama;T. Tatsumi
研究了不同沸石分子筛催化环己酮肟气相Beckmann重排合成ε-己内酰胺的反应。催化剂的催化性能受沸石结构和稀释剂溶剂的影响较大。用正己醇替代苯后，除Silicalite-1催化剂外，其余催化剂的催化性能均有较大提高。特别是H-LTL和H-OFF-ERI分子筛的选择性和稳定性显著提高，两种催化剂在6h内均表现出约100%的肟转化率和95%的ε-己内酰胺选择性。
The vapor phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam catalyzed by various zeolites was studied. The catalytic performance was greatly affected by both the zeolite structure and diluent solvent. When 1-hexanol was used in place of benzene, the catalytic performance of all catalysts except silicalite-1 was greatly improved. In particular, the selectivity and stability of H-LTL and H-OFF-ERI zeolites remarkably increased; both catalysts exhibited ca. 100% oxime conversion and ε-caprolactam selectivity of >95% for 6 h.