Ammoximation of cyclohexanone and hydroxyaromatic ketones over titanium molecular

被引：84

作者：

LeBars, J ^{[1
]}

Dakka, J ^{[1
]}

Sheldon, RA ^{[1
]}

机构：

[1] TECH UNIV DELFT,LAB ORGAN CHEM & KATALYSE,2628 BL DELFT,NETHERLANDS

来源：

APPLIED CATALYSIS A-GENERAL | 1996年 / 136卷 / 01期

关键词：

titanium silicates; ammoximation; cyclohexanone; hydroxyacetophenones; grimes; hydrogen peroxide;

D O I：

10.1016/0926-860X(95)00264-2

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：

The liquid phase ammoximation of cyclohexanone, ortho and para-hydroxyacetophenones (2-HAP and 4-HAP) with ammonia and hydrogen peroxide was investigated over titanium-silicalite-1 (TS-1), titanium-aluminum-beta (Ti-Al-Beta) and Ti-ZSM-48. The ammoximation of 4-HAP over TS-1 gave the corresponding oxime in 100% selectivity at 50% 4-HAP conversion. Under similar conditions, Ti-Al-Beta gave the oxime in 80% selectivity at 30% 4-HAP conversion. Ti-ZSM-48 afforded 17% 4-HAP conversion and 67% 4-HAP oxime selectivity. The ammoximation of 2-HAP occurred with 80% yield over TS-1 and with 40% yield over Ti-AI-Beta. Methanol as solvent and large excess of ammonia are preferred to perform ammoximation on Ti-Al-Beta.

引用

页码：69 / 80

页数：12

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