Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Druckformat: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v5.i1.50
10 pages

NITROUS OXIDE REDUCTION OVER MONO AND BIMETALLIC CARBON-SUPPORTED CATALYSTS

F. Goncalves
Universidade Federal Fluminense, Pólo Universitário de Rio das Ostras, Faculdade Federal de Rio das Ostras.
J. L. Figueiredo
Laboratory of Catalysis and Materials, Department of Chemical Engineering, Faculty of Engineering of the University of Porto, Rua Dr Roberto Frias, 4200-465, Porto, Portugal

ABSTRAKT

Nitrous oxide, N2O, is now recognized as an environmental pollutant. Methods to remove N2O are relatively scarce and only a few studies have been reported. In the present work, N2O reduction was performed over mono and bimetallic carbon-supported catalysts. One potential advantage of such catalysts lies in the carbon-reducing properties, eliminating the need for the addition of an external reducing agent.
Carbon-supported Ni catalysts were tested and their activities and stabilities were compared with Ni−K bimetallic catalysts. A commercial activated carbon was used as catalyst support and the metals were introduced by the excess-solution impregnation method.
Catalyst performances were evaluated by temperature-programmed reaction and isothermal reaction at 350°C.
Impregnation of Ni resulted in a higher activity, lower onset reaction temperature and lower temperature required for reaching 100% conversion. In isothermal tests at 350°C, Ni catalysts presented poor stability, which was increased by K addition. The better performances obtained by co-impregnation of K revealed the strong ability of K for N2O dissociative chemisorption and oxygen transfer.


Articles with similar content:

BULK CATALYST FOR NITROUS OXIDE DECOMPOSITION IN SPACE THRUSTERS
International Journal of Energetic Materials and Chemical Propulsion, Vol.15, 2016, issue 2
Andre Navarro de Miranda, Sayuri Okamoto, Luis Gustavo Ferroni Pereira, Leandro José Maschio, Ricardo Vieira
THERMODYNAMIC ASSESSMENT OF ULTRA-LOW-GLOBAL WARMING POTENTIAL REFRIGERANTS FOR SPACE AND WATER HEATERS
Heat Transfer Research, Vol.51, 2020, issue 14
José Gonzálvez-Maciá, Abdelrahman H. Hassan, Emilio López-Juárez, Luis Sánchez-Moreno-Giner
THERMAL REACTIVITY OF AL/FE CORE−SHELL NANOCOMPOSITES
International Journal of Energetic Materials and Chemical Propulsion, Vol.10, 2011, issue 2
Wei Jiang, Fengsheng Li, Zhipeng Cheng, Xiaojuan Zhang, Yi Wang, Shixi Wu, Xiaode Guo
HYDROGENOLYSIS OF GLYCEROL: COMPARISON OF CONTINUOUS AND BATCH MODE REACTIONS OVER Ni-ZnO CATALYSTS
Catalysis in Green Chemistry and Engineering, Vol.1, 2018, issue 1
Narsinga Raju, Nakka Lingaiah, Voggu Rekha, Miryala Balaraju
THERMAL DECOMPOSITION BEHAVIORS OF AMMONIUM NITRATE AND CARBON MIXTURES
International Journal of Energetic Materials and Chemical Propulsion, Vol.9, 2010, issue 6
Yu-ichiro Izato, Atsumi Miyake