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TiO2 and TiO2-SiO2 prepared by various methods were tested as the support of
V205 for NH3-SCR. The intrinsic activity, i.e., reaction rate per active site, was
independent of the preparation method and SiO2 content, but the densities of
active sites and deposited vanadium species were higher on the support with
higher density of surface OH groups. It was concluded that the surface
reactivity such as OH density is a key factor of TiO2 support controlling
catalytic activity of V2Os/TiO2 catalyst for NH3-SCR.Õâ¶Î²»ÊǺÜÄÑ£¬µ«ÊÇÎÒ²»ÄÜ׼ȷµÄ·­Òë³öÀ´£¬Çó°ïæ¡£ÁíÍâOH¶ÔÓÚTiO2´ß»¯µÄ×÷ÓÃÊÇÊ²Ã´ÄØ

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