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Acta Physico-Chimica Sinica  2008, Vol. 24 Issue (02): 338-344    DOI: 10.3866/PKU.WHXB20080227
Note     
Inhibition Action and Adsorption Behavior of POTAS and PDTAS on Copper in Alkaline Medium
ZHANG Xiu-Juan; LIU Rui-Quan; WANG Xian-Qun
College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China
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Abstract  Two pyrazolone compounds, POTAS and PDTAS, were synthesized and their inhibition action and adsorption behavior on copper in aqueous NaHCO3 (mass fraction 5%) solution were investigated by means of mass loss and electrochemical techniques. It was showed that the two compounds had good corrosion inhibition for copper in NaHCO3 solution. The inhibition efficiency of the two compounds was found to decrease as follows: POTAS>PDTAS. Both POTAS and PDTAS were mixed-type inhibitors. The results of experiment revealed that the adsorption on copper surface was monolayer adsorption. The adsorption processes were exothermic reaction and belong to physical absorption.

Key wordsInhibitor      Copper      Pyrazolone      NaHCO3      Adsorption behavior     
Received: 09 August 2007      Published: 18 December 2007
MSC2000:  O646.6  
Corresponding Authors: LIU Rui-Quan     E-mail: liu.rq@163.com
Cite this article:

ZHANG Xiu-Juan; LIU Rui-Quan; WANG Xian-Qun. Inhibition Action and Adsorption Behavior of POTAS and PDTAS on Copper in Alkaline Medium. Acta Physico-Chimica Sinica, 2008, 24(02): 338-344.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20080227     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2008/V24/I02/338

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