E. Hums, UNDERSTANDING OF DEACTIVATION BEHAVIOR OF DENOX CATALYSTS - A KEY TO ADVANCED CATALYST APPLICATIONS, Kinetics and catalysis, 39(5), 1998, pp. 603-606
Despite numerous contributions to the literature since 1975 regarding
SCR catalysis with ammonia for NOx removal from combustion gases, ther
e is still on-going, heated discussion in academia concerning both cat
alytically active sites of the SCR mechanism and deactivation phenomen
a with regard to practical SCR applications. It was demonstrated that
exposure of a TiO2MoO3-V2O5 system to arsenic-laden flue gases resulte
d in modification of the active sites, which still remain functional.
Changes in reaction kinetics suggest a mechanism of selective poisonin
g.