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New Findings on Chemical Engineering Described by Investigators at Institute of High Energy Physics (A Highly Efficient and Stable Palladium Catalyst...

July 23, 2014



New Findings on Chemical Engineering Described by Investigators at Institute of High Energy Physics (A Highly Efficient and Stable Palladium Catalyst Entrapped within the Cross-Linked Chitosan Membrane for Heck Reactions)

By a News Reporter-Staff News Editor at Journal of Engineering -- Researchers detail new data in Chemical Engineering. According to news reporting from Beijing, People's Republic of China, by VerticalNews journalists, research stated, "In this study, chitosan directly cross-linked by Pd-II cation membranes (Pd-cr-CSM) with good mechanical strength and thermal stabilities have been prepared."

The news correspondents obtained a quote from the research from the Institute of High Energy Physics, "Although the prepared Pd-cr-CSM has neither open porous structure nor high specific surface areas, it has similar good catalytic activity and much higher stability as compared with typical prepared chitosan-stabilized palladium heterogeneous catalysts for Heck reactions. It is highly active for the Heck reactions of aryl iodides and bromides with a strong electron-withdrawing group at a palladium catalyst loading of 0.15 mol %. It can be recycled 12 times in dimethyl sulfoxide (DMSO) solution or 7 times in aqueous solution."

According to the news reporters, the research concluded: "The high activity and extreme stability of the Pd-cr-CSM catalyst are mainly attributed to the well-entrapped palladium nanoparticles inside the chitosan matrix, which might catalyze the coupling reactions in the free volume holes (open spaces) of the swollen cross-linked chitosan gel networks."

For more information on this research see: A Highly Efficient and Stable Palladium Catalyst Entrapped within the Cross-Linked Chitosan Membrane for Heck Reactions. Industrial & Engineering Chemistry Research, 2014;53(24):10041-10050. Industrial & Engineering Chemistry Research can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Industrial & Engineering Chemistry Research - www.pubs.acs.org/journal/iecred)

Our news journalists report that additional information may be obtained by contacting M.F. Zeng, Chinese Academy Sci, Inst High Energy Phys, Beijing 100049, People's Republic of China. Additional authors for this research include C.Z. Qi, J. Yang, B.Y. Wang and X.M. Zhang.

Keywords for this news article include: Asia, Beijing, Chemical Engineering, 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: Journal of Engineering


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