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A comparative study on the catalytic activity of ZnO modified zeolites in the synthesis of alkylpyrazines

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Title A comparative study on the catalytic activity of ZnO modified zeolites in the synthesis of alkylpyrazines
 
Creator Anand, R
Jyothi, TM
Rao, BS
 
Subject Chemistry, Physical; Environmental Sciences
 
Description The vapor phase condensation reaction of monoethanolamine (MEA) has been carried out over three ZnO-modified zeolite catalysts in the temperature range 280-400 degreesC. Ethylpyrazine was formed as the major product in the cases of ZnO-ZSM-5 and ZnO-FER, whereas pyrazine was formed as the major product in the case of ZnO-MOR. Moreover, we observed with ZnO-MOR a large amount of lower boilers which included methylamine, aziridine, ethylamine and ethylenediamine. The formation of DABCO was appreciable over ZnO-MOR; however, it becomes less probable over the other two catalysts, due to their higher dehydrogenation activity. The stability of these catalyst systems in the conversion of MEA followed the order: ZnO-ZSM-5 > ZnO-MOR > ZnO-FER. (C) 2001 Elsevier Science B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BVAMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
 
Date 2011-09-24T09:15:42Z
2011-09-24T09:15:42Z
2001
 
Type Article
 
Identifier APPLIED CATALYSIS A-GENERAL
0926-860X
http://hdl.handle.net/123456789/24135
 
Language English