Cw. Lee et al., DETERMINATION OF ION-EXCHANGED CO2-ZSM-5 BY TEMPERATURE-PROGRAMMED DESORPTION( CATION IN CO), Microporous materials, 12(1-3), 1997, pp. 21-24
It is shown that temperature-programmed desorption of adsorbed NO on C
o-ZSM-5 zeolite used in selective catalytic reduction can accurately m
easure the amount of Co2+ cation for Co/Al ratios from 0 to 0.42 where
the 0.42 limit corresponds to 84% maximum exchange. Evidence is also
shown for the formation of cobalt oxide particles in Co-ZSM-5 for Co/A
l ratios above 0.42. (C) 1997 Elsevier Science B.V.