Vapour phase Beckmann rearrangement of cyclohexanone oxime over SAPO-11 molecular sieve

被引：88

作者：

Singh, PS ^{[1
]}

Bandyopadhyay, R ^{[1
]}

Hegde, SG ^{[1
]}

Rao, BS ^{[1
]}

机构：

[1] NATL CHEM LAB,CATALYSIS DIV,POONA 411008,MAHARASHTRA,INDIA

来源：

APPLIED CATALYSIS A-GENERAL | 1996年 / 136卷 / 02期

关键词：

epsilon-caprolactam; SAPO-11; ALPO(4)-11; silicalite-1; silynated zeolite; Beckmann rearrangement; cyclohexanone oxime;

D O I：

10.1016/0926-860X(95)00303-7

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：

SAPO-11 exhibited a high caprolactam yield for the vapour phase Beckmann 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 efficiency is compared with aluminosilicate having MFI structure. SAPO-11 is the best catalyst for the reaction among the investigated catalysts, ALPO(4)-11 on silica carrier, silynated zeolite and silynated SAPO-11. Acid sites with medium strength (Si/Al > 10 000) are very active in the rearrangement reaction.

引用

页码：249 / 263

页数：15

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