EFFECT OF COPPER CONTENTS OIL SULFUR POISONING OF COPPER ION-EXCHANGED MORDENITE FOR NO REDUCTION BY NH3
SCIE
SCOPUS
- Title
- EFFECT OF COPPER CONTENTS OIL SULFUR POISONING OF COPPER ION-EXCHANGED MORDENITE FOR NO REDUCTION BY NH3
- Authors
- HAM, SW; CHOI, H; NAM, IS; KIM, YG
- Date Issued
- 1995-05
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Deactivation of copper ion-exchanged mordenite (CuHM) catalysts with different copper contents by SO2 for NO reduction with NH3 was examined in a fixed bed flow reactor. A larger amount of deactivating agent deposits on the catalyst surface with the increase of copper contents under the same operating conditions. The deactivating agents deposited on the copper-exchanged mordenite catalysts were mainly (NH4)(2)SO4 and/or NH4HSO4 from the results of thermal analyses such as thermogravimetric analysis (TGA), differential thermal analysis (DTA), and temperature-programmed desorption (TPD). The formation of the ammonium salts largely depends on the reaction temperature and SO3 concentration generated from SO2 oxidation which is a reaction catalyzed primarily by copper ions on the catalyst surface. The catalytic activity and surface area of the deactivated catalysts are well-correlated with the sulfur content deposited on the catalyst surface, depending upon the reaction temperatures and its catalyst copper contents.
- Keywords
- SELECTIVE CATALYTIC REDUCTION; VANADIA ALUMINA CATALYST; NITRIC-OXIDE; AMMONIA; ZEOLITE; DEACTIVATION; GASES; COKE; SO2
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21794
- DOI
- 10.1021/ie00044a014
- ISSN
- 0888-5885
- Article Type
- Article
- Citation
- INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 34, no. 5, page. 1616 - 1623, 1995-05
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