We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Wide Temperature Window in the Catalytic Activity of Novel Pt/ZSM-5 Prepared by a Sublimation Method for Selective Catalytic Reduction of NO.
- Authors
Woo, Seong Ihl; Kim, Do Kyoung; Park, Yong Ki; Kim, Myoung Rae; Decyk, Piotr
- Abstract
The removal of nitric oxide from the exhaust gas of lean-burn engines is not fully commercialized since the current catalyst technology cannot meet the strict future emission regulations. Although ZSM-5 ion-exchanged with Pt (Pt/ZSM-5) has been considered as a promising catalyst due to its superior low-temperature activity, it has the drawback of a narrow “temperature window” for activity, i.e. an abrupt decrease in the activity above 300 °C. This paper reports on the preparation of novel Pt/ZSM-5 by subliming Pt(CO)2Cl2 into H-ZSM-5 at 220 °C, resulting in excellent activity within a wide temperature window between 230 and 500 °C. Pre-treatment of this Pt/ZSM-5 can change the width of the temperature window. Moreover, H2O plays a role as a promoter and SO2 reversibly reduces the activity by less than 20%.
- Subjects
SUBLIMATION (Psychology); CATALYSTS; CHEMICAL inhibitors; CATALYSIS; PHYSICAL &; theoretical chemistry; BIOMOLECULES; MOLECULAR biology
- Publication
Catalysis Letters, 2003, Vol 85, Issue 1/2, p69
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1023/A:1022168707843