| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터) |
| 권호 |
20권 1호, p.889 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Structural and mechanistic investigation of sulfated Sb-V-CeO2/TiO2 catalysts for NH3-SCR by XANES and DRIFTS |
| 초록 |
A study of structural and mechanistic investigation of the sulfated Sb-V-CeO2/TiO2 catalysts at different temperatures was carried out by X-ray absorption near edge spectroscopy (XANES) and Diffused reflectance infrared Fourier transform spectroscopy (DRIFTS). The catalysts sulfated at 500ºC temperatures (S500) exhibited superior NOx conversion at low temperatures (150-200ºC) than the catalysts sulfated at 300 (S300) and 400ºC (S400). Ce M4,5 edge XANES spectra of S500 catalyst indicated peak at 881.9 eV attributed to Ce3+ oxidation state. The in-situ DRIFTS results revealed that the number of Bronsted and Lewis acid sites of S500 catalysts was increased significantly than S300 and S400, which resulted in high activity at low temperatures. |
| 저자 |
Pullur Anil Kumar, 정영은, 유창용, 하헌필
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| 소속 |
KIST |
| 키워드 |
NH3-SCR; XANES; DRIFTS
|
| E-Mail |
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| 원문파일 |
초록 보기 |
