N, Srinivas and D, Venugopal and B, Srinivas and S J, Kulkarni and M. , Subrahmanyam (2002) Intermolecular cyclization of ethanolamine to 1,4-diazabicyclo (2.2.2) octane over modified pentasil zeolites. Microporous and Mesoporous Materials , 51 . pp. 43-50.
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Abstract
The synthesis of 1,4-diazabicyclo (2.2.2) octane (DABCO) over modified ZSM-5 catalysts was carried out selectively in vapor phase with high conversion and yields. Pb, Zr and Cr-modified HZSM-5 zeolites with medium acidity gave high yields of DABCO. The acid sites of medium strength are found to be active for the selective synthesis of DABCO. The life of the catalyst was significantly improved by tuning various reaction parameters. The optimization of reaction parameters like mole ratio of the feed, weight hour space velocity, time on stream, effect of additives in the feed and the mechanism of selective formation of DABCO are described.
| Item Type: | Article |
|---|---|
| Subjects: | Science > Chemistry |
| ID Code: | 504 |
| Deposited By: | INVALID USER |
| Deposited On: | 01 Apr 2007 17:24 |
| Last Modified: | 01 Apr 2007 17:24 |
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