Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Y.J. Mergler"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 115:474-479
Exploratory research to develop Rh-free, “Pt-only”, automotive catalysts is described. Metal oxides were added as a promoter or co-catalyst to Pt/SiP2 and the effect of the additive on NO reduction by CO has been studied. In addition, the reactio
Autor:
Cjm Kees Meesters, WJ Nauta, Richard Schaake, van Rj Kampen, Y.J. Mergler, van Jgh Hans Griensven, B Raas
Publikováno v:
Wear, 258(5-6), 915-923. Elsevier
Polycarbonate was chosen as a model material to study the influence of yield strength and toughness on the tribological behaviour of the polymer. Yield stress and toughness of polycarbonate were varied by controlled physical ageing or by mechanical o
Publikováno v:
Wear. 256:294-301
Material transfer is an important factor in the sliding behaviour of polymers, as it governs the development of friction and wear in the course of time. However, little is known about the first stages of material transfer. Therefore, measurements wer
Autor:
Richard Schaake, Y.J. Mergler
Publikováno v:
Journal of Applied Polymer Science. 92:2689-2692
The friction and abrasive wear of blends of polystyrene (PS) and poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) were measured. The coefficient of friction decreases only slightly with an increasing PPO fraction, while the abrasive wear decreases largel
Autor:
Bernard E. Nieuwenhuys, Y.J. Mergler
Publikováno v:
Applied Catalysis B: Environmental. 12:95-110
The activity and selectivity of a 5 wt.-% Pt/SiO2 catalyst, a Pt/CoOx/SiO2 catalyst with 3 wt.-% Co3O4 and a Pt/MnOx/SiO2 catalyst with 25 wt.-% MnO2 for NO/H2 reactions were compared with a commercial PtRh/Al2O3 catalyst, with 0.4 wt.-% Pt and 0.08
Publikováno v:
Journal of Catalysis, 167(2), 305-313. Academic Press Inc.
Pt/CoOx/SiO2catalysts consisting of 5 wt% Pt and 3 wt% Co3O4are highly active for CO oxidation below 100°C. In the present study the technique of temporal analysis of products was used to obtain information on the mechanism of the high activity. The
Publikováno v:
Applied Catalysis B: Environmental. 10:245-261
A study of CO oxidation by O2 over Pt catalysts, promoted by MnOx and CoOx, is described. The activities of Pt/SiO2, Pt/MnOx/SiO2 and Pt/CoOx/SiO2 are compared with commercial Pt/Al2O3, Pt/Rh/Al2O3 and Pt/CeOx/Al2O3 catalysts. Since these catalysts d
Publikováno v:
Journal of Catalysis. 161:310-318
The characterization of Pt/SiO{sub 2}, Pt/CoO{sub x}/SiO{sub 2}, Pt/MnO{sub x}/SiO{sub 2}, CoO{sub x}/SiO{sub 2}, and MnO{sub x}/SiO{sub 2} catalysts with 5 wt% Pt, 25 wt% MnO{sub 2}, 50 wt% Co{sub 3}O{sub 4}, and 3 wt% Co{sub 3}O{sub 4} is described
Autor:
B.E. Nieuwenhuys, Y.J. Mergler
Publikováno v:
Journal of Catalysis. 161:292-303
CO/NO reactions have been studied over two catalysts, Pt/CeOx/Al2O3and Pt/Al2O3, under net reducing conditions. The Pt/Al2O3catalyst deactivated with time at 400°C whereas the Pt/CeOx/Al2O3catalyst showed oscillations in the reaction rate at this te
Publikováno v:
Microporous Materials. 4:455-465
Infrared (IR) studies on NO adsorption and co-adsorption of NO and O 2 onto cerium- and lanthanum-exchanged mordenite (CeNaMOR and LaNaMOR, respectively) were performed in order to elucidate the role of redox properties of cerium ( Ce III Ce IV ) in