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De-NOx Characteristics for Cu-ZSM5/Alumina Beads Catalyst Filter in Urea-SCR System  

Jang, Young-Sang (Department of Geoenvironmental System Engineering, Hanyang University)
Shin, Young-Seop (Department of Geoenvironmental System Engineering, Hanyang University)
Lee, Byoung-Jun (AVL Korea Co., Ltd.)
Park, Jai-Koo (Department of Geoenvironmental System Engineering, Hanyang University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.5, 2008 , pp. 60-67 More about this Journal
Abstract
The catalytic filter of Cu-ZSM5/alumina beads was considered to reduce NOx in the urea SCR system. Catalytic support of porous alumina beads with mean pore size $130{\mu}m$ and porosity $75{\sim}83%$ were prepared using foaming and gel-casting method. The Cu-ZSM5 catalysts were coated on the supporting alumina beads using $Cu(NO_3)_2$ by ion exchange method. After a washcoating process was applied to coat 10w% Cu-ZSM5 on porous alumina bead, coating layer was estimated $20{\mu}m$ in thickness. The characterization and the feasibility as a catalytic supports were investigated. And the NOx conversion test in Cu-ZSM5/Alumina Beads filter system was conducted by using Urea as reductants under laboratory test. The NOx conversion was increased as size and porosity of beads and observed more than 95% excellent NOx conversion above $300^{\circ}C$.
Keywords
Porous ceramic beads; Cu-ZSM5(zeolite secony mobile-5); Catalyst filter; Diesel Vehicle;
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Times Cited By KSCI : 1  (Citation Analysis)
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