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Research Data from East China University of Science and Technology Update Understanding of Nitrogen Compounds (Fabrication of Hierarchically Porous...

August 19, 2014



Research Data from East China University of Science and Technology Update Understanding of Nitrogen Compounds (Fabrication of Hierarchically Porous RuO2-CuO/Al-ZrO2 Composite as Highly Efficient Catalyst for Ammonia-Selective Catalytic Oxidation)

By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Nitrogen Compounds is now available. According to news originating from Shanghai, People's Republic of China, by NewsRx correspondents, research stated, "A hierarchically porous RuO2-CuO/(Al-ZrO2) nanocomposite, with RuO2 and CuO nanocrystals being homogeneously dispersed in the hierarchically porous structure of Al-doped ZrO2 (Al-ZrO2), has been developed by a hydrothermal and wet impregnation method for efficient ammonia-selective catalytic oxidation (SCO) applications. The microstructures of the RuO2-CuO/Al-ZrO2 nanocomposites were characterized by XRD, TEM, FESEM, EDX elemental mapping, and N-2 sorption."

Our news journalists obtained a quote from the research from the East China University of Science and Technology, "XPS analysis and H-2-TPR results indicate that the hierarchically porous RuO2-CuO/Al- ZrO2 composites possess a large number of oxygen vacancies and surface catalytic active sites, which endows the composite with high catalytic activity and N-2 selectivity for NH3 oxidation. NH3 complete oxidization has been achieved at 195 degrees C with 100% N-2 selectivity over an obtained RuO2-CuO/Al-ZrO2 composite at RuO/CuO = 1:1 (weight rate). The high efficiency of hierarchically porous RuO2-CuO/Al-ZrO2 nanocomposites for ammonia SCO reaction has been attributed to the synergetic catalytic effects among the metal oxides, in which the porous Al-ZrO2 support promotes oxygen activation by the generation of oxygen vacancies due to the Al doping, and the ultrahigh catalytic activity of RuO2 is responsible for the active NH3 oxidation."

According to the news editors, the research concluded: "Successively, CuO plays a role of NO intermediate conversion for enhanced N-2 selectivity."

For more information on this research see: Fabrication of Hierarchically Porous RuO2-CuO/Al-ZrO2 Composite as Highly Efficient Catalyst for Ammonia-Selective Catalytic Oxidation. ACS Catalysis, 2014;4(7):2195-2206. ACS Catalysis can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Catalysis - www.pubs.acs.org/journal/accacs)

The news correspondents report that additional information may be obtained from X.Z. Cui, E. China University of Science & Technology, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, People's Republic of China. Additional authors for this research include L.S. Chen, Y.X. Wang, H.R. Chen, W.R. Zhao, Y.S. Li and J.L. Shi (see also Nitrogen Compounds).

Keywords for this news article include: Asia, Ammonia, Shanghai, Nanocomposite, Nanotechnology, Nitrogen Compounds, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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