K. Okumura et al., Improvement of the catalytic performance of Pd/WO3/ZrO2 in the selective NO-CH4-O-2 reaction by the addition of water vapor, CHEM LETT, (10), 2001, pp. 1018-1019
The Pd/WO3/ZrO2 catalyst exhibited activity for the NO-CH4-O-2 reaction in
the presence of water vapor when WO3 monolayer covered the ZrO2 surface. Th
e selectivity of methane consumption for NO reduction was considerably impr
oved by the addition of 10% of water vapor.