| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 |
27권 1호, p.1016 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Simple physical mixing of zeolite prevents sulfur deactivation of vanadia catalysts forNOx removal |
| 초록 |
NOx abatement has been an indispensable part of environmental catalysis for decades. Selective catalytic reduction with ammonia (SCR) using V2O5/TiO2 is an important technology for removing NOx emitted from industrial facilities. However, it has been a huge challenge for the catalyst to operate at low temperatures, because ammonium bisulfate (ABS) forms and causes deactivation by blocking the pores of the catalyst. Here, we report that physically mixed H-Y zeolite effectively protects vanadium active sites by trapping ABS in micropores. The mixed catalysts operate stably at a low temperature of 220 °C, which is below the dew point of ABS. The sulfur resistance of this system is fully maintained during repeated aging/regeneration cycles because the trapped ABS easily decomposes at 350 °C. Further investigations reveal that the pore structure and the amount of framework Al determined the trapping ability of various zeolites. The SCR catalyst was successfully applied to the sintering furnace in the steelmaking factory of POSCO. |
| 저자 |
김도희1, 송인학1, 이황호1, 전세원1, 한정우2, 김준우3, 변영철3, 고동준3
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| 소속 |
1서울대, 2POSTECH, 3RIST |
| 키워드 |
촉매 |
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
