Jeong, Young Eun Kumar, Pullur Anil Ha, Heon Phil Lee, Kwan-young 2024-01-20T02:04:28Z 2024-01-20T02:04:28Z 2021-09-01 2017-02 1011-372X https://pubs.kist.re.kr/handle/201004/123110 The Cu based zeolite NH3-SCR catalysts are well-known for after treatment of exhaust gases from light-and heavy-duty diesel engines. However, these catalysts are easily deactivated under the co-presence of H2O and SO2. In the present study, Sb-V-CeO2/TiO2 catalyst showed superior conversion for the abatement of NOx with NH3 under H2O and SO2 condition compared to commercial Cu-SAPO-34 and CuFe-ZSM-5 zeolite catalysts. The physico-chemical properties of fresh and used catalysts were examined by BET surface area, TEM (Transition electron microscopy) with EDS/EDX (Energy dispersive spectrometer/X-ray), XPS (X-ray photoelectron spectroscopy), DRIFTS (in situ diffuse reflectance infrared Fourier transformed spectroscopy) and H-2-TPR (temperature programmed reduction). Higher than 95% of initial NOx conversion was obtained over Sb-V-CeO2/TiO2 catalyst at 250 A degrees C under 14% H2O and 50 ppm SO2 conditions. The SO2 on/off test of the CuFe-ZSM-5 and Cu-SAPO-34 catalysts indicated a drastic decrease of NOx conversion when SO2 was turned on. In contrast, Sb-V-CeO2/TiO2 catalyst maintained a high NOx conversion and initial NOx conversion was completely recovered when SO2 was turned off. [GRAPHICS] . English SPRINGER V2O5/WO3-TIO2 SCR CATALYSTS NITRIC-OXIDE NO REDUCTION NH3 AMMONIA SO2 ADSORPTION UREA CU DEACTIVATION Highly Active Sb-V-CeO2/TiO2 Catalyst Under Low Sulfur for NH3-SCR at Low Temperature Article 10.1007/s10562-016-1951-y 1 CATALYSIS LETTERS, v.147, no.2, pp.428 - 441 CATALYSIS LETTERS 147 2 428 441 scie scopus 000394359600014 2-s2.0-85009499849 Chemistry, Physical Chemistry Article V2O5/WO3-TIO2 SCR CATALYSTS NITRIC-OXIDE NO REDUCTION NH3 AMMONIA SO2 ADSORPTION UREA CU DEACTIVATION NH3-SCR SO2 on/off test Sb-V-CeO2/TiO2 Acid sites DRIFTS