TY - JOUR T1 - FT-IR spectroscopic investigation of the effect of SO2 on the SCR of NOx with propene over ZrO2-Nb2O5 catalyst A1 - Kantcheva, M. A1 - Cayirtepe, I. A1 - Naydenov, A. A1 - Ivanov, G. JA - Catalysis Today Y1 - 2010 ER -