Florida Have Reported New Data on Heavy Metals -->
By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Heavy Metals. According to news reporting out of Gainesville, Florida, by NewsRx editors, research stated, "The controlled deposition of a catalytically active material on a support, resulting in defined particle sizes and shapes, as well as control over the specific surface area of the active material and the support are usually limited when applying conventional catalyst preparation techniques. Flame spray pyrolysis offers the potential to overcome this limitation and is tested for the preparation of Fischer-Tropsch catalysts."
Our news journalists obtained a quote from the research from the University of Florida, "Conventional single flame spray pyrolysis and, for the first time, double flame spray pyrolysis are compared for the synthesis of alumina supported cobalt catalysts. In the latter process the metal oxide precursors are combusted individually in two opposing nozzles. The key parameter for defining the final material composition is the intersection distance of the flames, which was systematically varied. The Fischer-Tropsch performance of the Co-based catalysts was studied in a fixed bed reactor at 230 degrees C and 20 bar. The catalytic results are discussed on the basis of structural characterization of the different catalysts by XRD, BET, TPR, UV-vis and TEM/EF-TEM. While catalysts made by single flame spray pyrolysis Were inactive in the Fischer-Tropsch reaction regardless of whether cobalt was subsequently mixed with alumina or the supported catalyst was directly prepared in the flame reactor, the double flame sprayed catalysts showed good catalytic activity. Depending on the intersection distance of the two flames, the formation of cobalt oxide and alumina occurred separately in each flame reactor."
According to the news editors, the research concluded: "In spite of the independent particle growth in the two flames, the double flame reactor geometry lead to good adhesion of the two oxides resulting in good stabilization of cobalt nanoparticles on the alumina support during the Fischer-Tropsch reaction."
For more information on this research see: Double flame spray pyrolysis as a novel technique to synthesize alumina-supported cobalt Fischer-Tropsch catalysts. Catalysis Today, 2013;214():90-99. Catalysis Today can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Catalysis Today - www.elsevier.com/wps/product/cws_home/500857)
Our news journalists report that additional information may be obtained by contacting M. Minnermann, University of Florida, Dept. of Chem Engn, Gainesville, FL 32611, United States. Additional authors for this research include H.K. Grossmann, S. Pokhrel, K. Thiel, H. Hagelin-Weaver, M. Baumer and L. Madler (see also Heavy Metals).
Keywords for this news article include: Cobalt, Florida, Gainesville, Heavy Metals, United States, Transition Elements, North and Central America
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