Kwon, Dong Wook Kim, Dong Ho Hong, Sung Chang 2024-01-19T19:33:55Z 2024-01-19T19:33:55Z 2021-09-04 2019-07 0959-3330 https://pubs.kist.re.kr/handle/201004/119811 The effect of antimony on the selective catalytic reduction (SCR) performance and SO2 durability of V-Sb/Ti was investigated. The physicochemical characteristics of catalyst were characterized by various techniques, including Brunauer-Emmett-Teller (BET) surface area analysis, X-ray diffraction (XRD), NH3/SO2-temperature programmed desorption (TPD), diffuse reflectance infrared Fourier transform spectroscopy (DRIFTs), X-ray photoelectron spectroscopy (XPS), and H-2-temperature programmed reduction (H-2-TPR). The V-Sb/Ti catalyst showed excellent activity in the range 200-300 degrees C (compared with V/Ti), with an optimum achieved for 2 wt.% antimony. The total amount of acidic sites and NH3 adsorption characteristics did not affect the catalytic efficiency. The Sb5+ fraction was highest for V-2.0Sb/Ti and exhibited a positive correlation with the V4+ fraction. This phenomenon is related to the effect of synergistic between vanadium and antimony, promoting the conversion of V5+ to V4+ by Sb5+. Increasing the V4+ fraction in V-Sb/Ti increased the catalytic activity, which was mainly attributed to enhanced catalyst re-oxidation capability due to the addition of antimony. Furthermore, the addition of antimony delayed the adsorption of SO2 onto the V-Sb/Ti catalyst surface, improving the resistance to this gas. Therefore, the addition of antimony to V/Ti improved NOx conversion and SO2 durability. [GRAPHICS] English TAYLOR & FRANCIS LTD VANADIA-TITANIA CATALYSTS IN-SITU FTIR NITRIC-OXIDE V2O5/TIO2 CATALYSTS MECHANISTIC ASPECTS AMMONIA ADSORPTION SO2 OXIDATION SCR REACTIVITY NH3-SCR Promotional effect of antimony on the selective catalytic reduction NO with NH3 over V-Sb/Ti catalyst Article 10.1080/09593330.2018.1491632 1 ENVIRONMENTAL TECHNOLOGY, v.40, no.19, pp.2577 - 2587 ENVIRONMENTAL TECHNOLOGY 40 19 2577 2587 scie scopus 000501810600012 2-s2.0-85049566627 Environmental Sciences Environmental Sciences & Ecology Article VANADIA-TITANIA CATALYSTS IN-SITU FTIR NITRIC-OXIDE V2O5/TIO2 CATALYSTS MECHANISTIC ASPECTS AMMONIA ADSORPTION SO2 OXIDATION SCR REACTIVITY NH3-SCR Antimony SbOx SO2 resistance NH3-SCR NOx removal vanadium