Mechanistic Aspect of N2O Formation Over Pt–Ba/γ-Al2O3 Catalysts
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چکیده
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N2O Decomposition over Cu–Zn/γ–Al2O3 Catalysts
Cu–Zn/γ–Al2O3 catalysts were prepared by the impregnation method. Catalytic activity was evaluated for N2O decomposition in a fixed bed reactor. The fresh and used catalysts were characterized by several techniques such as BET surface area, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The Cu–Zn/γ–Al2O3 catalysts exhibit high activity and stability for N2O decomposition in mi...
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Ru is considered as an effective active species for N2O decomposition; however, there is disagreement about which ruthenium species is key for catalytic activity. In order to understand the role of Ru species in N2O decomposition, Ru/Al2O3 (Ru/Al2O3-H2, Ru/Al2O3-NaBH4, Ru/Al2O3-air) catalysts with different ratios of metallic Ru were prepared and evaluated for their catalytic activities. Variou...
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Introduction Nitrous oxide (N2O) is a strong greenhouse gas with global warming potential (GWP) which is much greater, by 310 times, than that of CO2, and chronic exposure of humans to it even with low concentrations has been known to cause miscarriages in an early gestation period, liver disorders, kidney troubles, cancers and troubles of nervous systems [1-3]. N2O having such effects and high...
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In this paper, mechanistic aspects involved in the formation of N2O over Pt-BaO/Al2O3 and Rh-BaO/Al2O3 model NOx Storage-Reduction (NSR) catalysts are discussed. The reactivity of both gas-phase NO and stored nitrates was investigated by using H2 and NH3 as reductants. It was found that N2O formation involves the presence of gas-phase NO, since no N2O is observed upon the reduction of nitrates ...
متن کاملCatalytic Decomposition of N2O over Cu–Zn/ZnAl2O4 Catalysts
The catalytic decomposition of N2O was investigated over Cu-Zn/ZnAl2O4 catalysts in the temperature range of 400–650 ◦C Catalytic samples have been prepared by wet impregnation method. Prepared catalysts were characterized using several techniques like BET surface area, X-ray diffraction (XRD), and Scanning electron microscopy (SEM). The Cu-Zn/ZnAl2O4 showed higher catalytic performance along w...
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ژورنال
عنوان ژورنال: Topics in Catalysis
سال: 2018
ISSN: 1022-5528,1572-9028
DOI: 10.1007/s11244-018-1108-x