| Title |
Research Paper - Materials Processing - : Development of de - NOx Cu / Zeolite Catalyst Using Mechanical Alloying Method |
| Authors |
남태현(Tae Hyun Nam); 안효준(Hyo June Ahn); 안인섭(In Shup Ahn); 이동근(Dong Keun Lee); 박동규(Dong Gyu Park) |
| Abstract |
Cu/ZSM-5 zeolite catalyst was produced by mechanical alloying and their microstructures together with catalytic reaction mechanism for NO removal were investigated by means of X-ray diffraction, electron microscopy, energy dispersive X-ray spectrometry, and in situ Fourier transform infrared spectroscopy. The results were compared with those from copper ion-exchanged ZSM-5 zeolite catalyst. During mechanical alloying, Copper remains in crystalline and a part of ZSM-5 zeolite transformed to amorphous phase. In the copper ion-exchanged ZSM-5 catalyst, however, copper was found to be noncrystalline, while the ZSM-5 zeolite was crystalline. Cu/ZSM-5 zeolite catalyst produced by mechanical alloying showed a high efficiency in reduction of NO at 250℃. This indicates that at temperatures lower than 300℃ the mechanically alloyed Cu/ZSM-5 catalyst is more effective than Copper ion-exchanged ZSM-5 catalyst whose high efficiency for NO deduction was achieved at 360℃. |