News Column

Findings from La Plata National University Broaden Understanding of Anions

June 13, 2014



By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Anions. According to news reporting originating from La Plata, Argentina, by NewsRx correspondents, research stated, "In recent years, several works have been addressed to decrease carbon dioxide emission or to capture, to storage and to use it. An attractive option is its use as feedstock of chemical industry, especially in dehydrogenation reactions (such as ethylbenzene dehydrogenation to produce styrene), providing an exothermic process which can be operated at lower temperatures, making negligible the cracking products."

Our news editors obtained a quote from the research from La Plata National University, "Aiming to find alternative catalysts for this reaction, magnesia-supported iron oxides were studied, being prepared by two different methods. The classical impregnation produced a spinel (MgFe2O4) coexisting with magnesia containing Fe3+ species, this catalyst showing higher specific surface area and being more active and selective than magnesia. Moreover, the deposition of iron nanoparticles through a magnetic fluid on magnesia produced magnesia-supported hematite nanoparticles co-existing with magnesia containing Fe3+ species. In this case, the specific surface area and the activity were even higher and the solid is much more reducible than the other sample. These findings were associated to hematite nanoparticles and to the lower tendency of iron species to diffuse into magnesia lattice."

According to the news editors, the research concluded: "They show that the Fe3+ species are more active and selective to styrene as hematite nanoparticles than when they are in the environment of magnesium ferrite."

For more information on this research see: Ethylbenzene dehydrogenation in the presence of carbon dioxide over magnesia-supported iron oxides. Journal of Molecular Catalysis A-Chemical, 2014;387():147-155. Journal of Molecular Catalysis A-Chemical can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Anions).

The news editors report that additional information may be obtained by contacting M.D. Rangel, La Plata National University, Fac Ciencias Exactas, CINDECA, La Plata, Argentina. Additional authors for this research include A.P.D. Monteiro, S.G. Marchetti, S.B. Lima and M.D. Ramos.

Keywords for this news article include: Anions, La Plata, Argentina, Chemicals, Chemistry, Nanoparticle, South America, Carbon Dioxide, Nanotechnology, Oxygen Compounds, Emerging Technologies, Inorganic Carbon Compounds

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


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Source: Science Letter


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