TY - JOUR
T1 - Studies on NO-CO, NO-H2, NO-C3H6, and NO-NH3 Reactions Catalyzed by Transition Metal Oxides
AU - Murakami, Yuichi
AU - Hayashi, Kuniaki
AU - Yasuda, Koji
AU - Ito, Takashi
AU - Minami, Takashi
AU - Miyamoto, Akira
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1977
Y1 - 1977
N2 - NO-CO, NO-H2, NO-C3H6, and NO-NH3 reactions have been investigated on a number of transition metal oxide catalysts by pulse reaction technique. The catalysts have been divided into two groups with respect to their behaviors to the above reactions. Namely, Fe2O3, Cr2O3, CuO, Co3O4, NiO, MnO2, and ZnO catalysts (group A catalysts) are active for all reactions, whereas V2O6, MoO3, WO3, and SnO2 catalysts (group B catalysis) are active only for NO-NH3 and NO-C3H8 reactions but inactive for NO-CO and NO-H2 reactions. These results showed that mechanisms of NO-NH3 and NO-C3H6 reactions may be different from that of NO-H2 (or NO-CO) reaction. The activity of group A catalysts for NO-NH3 reaction is proportional to that for NO-H2 (or NO-CO) reaction, which suggested that a close relationship between the mechanisms of NO-NH3 and NO-H2 (or NO-CO) reactions may exist on group A catalysts. The selectivity of N2 in NO-NH3 reaction on group A catalyst is lower than that on group B catalysts. The differences in behavior between group A and B catalysts were also found in the kinetics of NO-NH3 reaction. Namely, reaction rate of NO-NHa reaction is proportional to PNH3-0.03 PNO-0.90 on V2O5 catalyst (group B catalyst) and to Pj^PNH30.32 PNO0.5 g Fe2O3 catalyst (group A catalyst). It has been inferred that the rate of NO adsorption and the reduction of adsorbed NO by adsorbed hydrogen are slower on V2O5 catalyst than on Fe2O3 catalyst.
AB - NO-CO, NO-H2, NO-C3H6, and NO-NH3 reactions have been investigated on a number of transition metal oxide catalysts by pulse reaction technique. The catalysts have been divided into two groups with respect to their behaviors to the above reactions. Namely, Fe2O3, Cr2O3, CuO, Co3O4, NiO, MnO2, and ZnO catalysts (group A catalysts) are active for all reactions, whereas V2O6, MoO3, WO3, and SnO2 catalysts (group B catalysis) are active only for NO-NH3 and NO-C3H8 reactions but inactive for NO-CO and NO-H2 reactions. These results showed that mechanisms of NO-NH3 and NO-C3H6 reactions may be different from that of NO-H2 (or NO-CO) reaction. The activity of group A catalysts for NO-NH3 reaction is proportional to that for NO-H2 (or NO-CO) reaction, which suggested that a close relationship between the mechanisms of NO-NH3 and NO-H2 (or NO-CO) reactions may exist on group A catalysts. The selectivity of N2 in NO-NH3 reaction on group A catalyst is lower than that on group B catalysts. The differences in behavior between group A and B catalysts were also found in the kinetics of NO-NH3 reaction. Namely, reaction rate of NO-NHa reaction is proportional to PNH3-0.03 PNO-0.90 on V2O5 catalyst (group B catalyst) and to Pj^PNH30.32 PNO0.5 g Fe2O3 catalyst (group A catalyst). It has been inferred that the rate of NO adsorption and the reduction of adsorbed NO by adsorbed hydrogen are slower on V2O5 catalyst than on Fe2O3 catalyst.
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U2 - 10.1246/nikkashi.1977.173
DO - 10.1246/nikkashi.1977.173
M3 - Article
AN - SCOPUS:85016534249
SN - 0369-4577
VL - 1977
SP - 173
EP - 180
JO - Nippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal
JF - Nippon Kagaku Kaishi / Chemical Society of Japan - Chemistry and Industrial Chemistry Journal
IS - 2
ER -