| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.2510 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Synthesis of Zeolite UZM-35 and Catalytic Properties of Copper-Exchanged UZM-35 for Ammonia Selective Catalytic Reduction |
| 초록 |
The synthesis of zeolite UZM-35 with the MSE topology and the catalytic properties of copper-exchanged UZM-35 (Cu-UZM-35) for the selective catalytic reduction of NOx with NH3 (NH3-SCR) are presented. When the simple dimethyldipropylammonium cation is used as an organic structure-directing agent together with Na+ and K+, crystallization of pure UZM-35 is very sensitive not only to the types of Al and Si sources employed, but also to the SiO2/Al2O3 and K2O/(Na2O + K2O) ratios in the synthesis mixture. In the temperature range studied, fresh Cu-UZM-35 shows comparable deNOx performance to fresh Cu-SSZ-13, the best NH3-SCR catalyst known to date. When hydrothermally aged at 750 °C, although the latter catalyst outperforms the former one, the operating temperature window of Cu-UZM-35 is considerably wider than that of Cu-SSZ-13. The overall characterization results of this study demonstrate the highly stable nature of framework Al atoms in the large-pore zeolite UZM-35 and their strong interactions with Cu2+ ions. This may lead to a moderate alteration of exchanged Cu2+ ions to CuOx and CuAl2O4 phases at high temperatures, thus rendering Cu-UZM-35 hydrothermally stable during NH3-SCR. |
| 저자 |
이정환1, 김영진1, 류태경1, 김평순2, 김창환2, 남인식1, 홍석봉1
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| 소속 |
1포항공과대, 2Hyundai Motor Group |
| 키워드 |
환경촉매 |
| E-Mail |
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| 원문파일 |
초록 보기 |
