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Paper Information

Journal:   IRANIAN JOURNAL OF CHEMICAL ENGINEERING   SPRING 2004 , Volume 1 , Number 1; Page(s) 65 To 70.
 
Paper: 

DECOMPOSITION OF NO OVER ZEOLITE AND MCM-41 MOLECULAR SIEVE SUPPORTED CATALYSTS

 
 
Author(s):  SEYEDIN AZAD F., ZHANG D.K.*
 
* SCHOOL OF CHEMICAL ENGINEERING, CURTIN UNIVERSITY OF TECHNOLOGY, WESTERN AUSTRALIA 6845, PERTH, AUSTRALIA
 
Abstract: 

Nitric Oxide (NO) decomposition over three catalysts supported on synthesized ZSM-5 zeolites and MCM-41 molecular sieves was investigated in a packed bed tubular reactor. Synthesized zeolite supported catalysts were prepared using ion-exchange and incorporation methods with copper during zeolite or molecular sieve synthesis procedures. Although Cu -ZSM-5 zeolites alone and a mixture of copper ion-exchanged ZSM-5 zeolite and MCM-41 molecular sieves were active, Cu-MCM-41 was not active for direct decomposition of NO. The mixture exhibited equal or higher activity in comparison with the Cu -ZSM-5 zeolite with a higher copper loading in the temperature range of 250-650 °c. This catalyst was not deactivated at temperatures up to 650 °c.
Up to 90% conversion was achieved over this catalyst when propene was used as a reducing agent, but methane did not have a positive effect on NO conversion into N2 when oxygen was present.

 
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