By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators discuss new findings in Chemical Engineering. According to news originating from Shanghai, People's Republic of China, by VerticalNews correspondents, research stated, "Extensive efforts have been devoted to the qualification of plant extracts as green corrosion inhibitors for industrial metals, but studies that demonstrate the active component(s) of these extracts remain scarce. We report here that piperine, the major pungent component of peppers, has the best corrosion inhibitive efficiency for copper in HCl among four analogous amide alkaloids isolated from a traditional Chinese medicine."
Our news journalists obtained a quote from the research from the East China University of Science and Technology, "This compound inhibited HCl corrosion more efficiently than cysteine, and did not exhibit markedly decreased efficiency under several harsh experimental conditions. Electrochemical and microscopic analyses suggested that piperine could form a protective layer on the metal surface via both physisorption and chemisorption, reducing the corrosion rate."
According to the news editors, the research concluded: "The adsorption energies of all the test compounds were calculated using a hybrid density functional theory."
For more information on this research see: 'Pungent' Copper Surface Resists Acid Corrosion in Strong HCL Solutions. Industrial & Engineering Chemistry Research, 2014;53(1):64-69. 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)
The news correspondents report that additional information may be obtained from L. Cai, E. China University of Science & Technology, Sch Pharm, Shanghai Key Lab New Drug Design, Shanghai 200237, People's Republic of China. Additional authors for this research include Q. Fu, R.W. Shi, Y. Tang, Y.T. Long, X.P. He, Y. Jin, G.X. Liu, G.R. Chen and K.X. Ghen.
Keywords for this news article include: Asia, Shanghai, Chemical Engineering, People's Republic of China
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