DEAMINOCYCLIZATION OF DIETHYLENETRIAMINE TO N-HETEROCYCLES OVER ZEOLITES

被引：3

作者：

SRINIVAS, B ^{[1
]}

KULKARNI, SJ ^{[1
]}

SUBRAHMANYAM, M ^{[1
]}

RAO, AVR ^{[1
]}

机构：

[1] IICT,DIRECTORS RES GRP,HYDERABAD 500007,ANDHRA PRADESH,INDIA

来源：

ZEOLITES | 1995年 / 15卷 / 07期

关键词：

ZEOLITES; DIETHYLENETRIAMINE; N-HETEROCYCLES; DEAMINOCYCLIZATION;

D O I：

10.1016/0144-2449(95)00048-B

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 deaminocyclization of diethylenetriamine was carried out over HZSM-5 (Si/Al = 30-280), HM, HY, SAPO-40 type catalysts. The reaction was carried out in the temperature range of 300-400 degrees C and 0.5 h(-1) weight hourly space velocity in the presence of water. The total yield of N-heterocycles varied from 32 to 77 wt% at 400 degrees C reaction temperature, At a low temperature (300 degrees C), the selectivity to piperazine is more, whereas at 400 degrees C the selectivity to pyrazine and dehydrogenated heterocycles increases due to dehydrogenation over basic centers generated because of the coke.

引用

页码：660 / 662

页数：3

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