News Column

New Findings from Karlsruhe Institute of Technology in the Area of Biochemistry Described

June 24, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Life Science Research. According to news reporting out of Karlsruhe, Germany, by NewsRx editors, research stated, "Ni-hexaaluminates exhibiting a high magnetoplumbite or -alumina phase content (>80wt%) and high specific surface areas (10-30m(2)g(-1)) were investigated under dry reforming conditions. Ni content and choice of mirror plane cation are the key factors controlling the structure-property relationship in the dry reforming reaction of CH4."

Our news journalists obtained a quote from the research from the Karlsruhe Institute of Technology, "The Ni content is favorably kept below a threshold of y=0.25 in ANi(y)Al(12-y)O(19-), (A=Ba, La, Sr) to ensure controlled nanoparticle formation and to avoid uncontrolled Ni-0 nanoparticle growth apart from the support. Sr,Ni and Ba,Ni-hexaaluminates promote high activity of the catalyst in the dry reforming reaction of CH4, but show fast deactivation if the Ni content is maladjusted in the hexaaluminate framework (y0.5). La,Ni-magnetoplumbites display much lower activity accompanied by fast deactivation. The use of very high calcination temperatures (1600 degrees C) resulting in low specific surface area is detrimental to the activity in the dry reforming of CH4, simultaneously higher hexaaluminate phase content obtained undoes catalytic stability, reasoned by Ni-0 nanoparticles produced after reduction cannot be stabilized over surface defects typically found on hexaaluminate platelets calcined at moderated temperatures (

According to the news editors, the research concluded: "As a result, larger metallic Ni ensembles are built up, selectivity to coke is increased and catalytic stability is compromised."

For more information on this research see: Structure-Activity Relationships of Nickel-Hexaaluminates in Reforming Reactions Part II: Activity and Stability of Nanostructured Nickel-Hexaaluminate-Based Catalysts in the Dry Reforming of Methane. Chemcatchem, 2014;6(5):1447-1452. Chemcatchem can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Chemcatchem - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1867-3899)

Our news journalists report that additional information may be obtained by contacting T. Roussiere, Karlsruhe Inst Technol, Inst Chem Technol & Polymer Chem, D-76131 Karlsruhe, Germany. Additional authors for this research include L. Schulz, K.M. Schelkle, G. Wasserschaff, A. Milanov, E. Schwab, O. Deutschmann, A. Jentys, J. Lercher and S.A. Schunk (see also Life Science Research).

Keywords for this news article include: Europe, Nickel, Germany, Karlsruhe, Transition Elements, Life Science Research

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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