SCI和EI收录∣中国化工学会会刊

›› 2016, Vol. 24 ›› Issue (10): 1442-1447.DOI: 10.1016/j.cjche.2016.04.028

• Process Systems Engineering and Process Safety • 上一篇    下一篇

Eco-friendly corrosion inhibitor from Pennisetum purpureum biomass and synergistic intensifiers for mild steel

Ekemini Ituen1,2, Abosede James3, Onyewuchi Akaranta2,3, Shuangqin Sun1   

  1. 1 Materials Physics and Chemistry Research Laboratory, College of Science, China University of Petroleum, Qingdao 266000, China;
    2 African Centre of Excellence in Oilfield Chemicals Research, Institute of Petroleum Studies, University of Port Harcourt, Nigeria;
    3 Department of Pure and Industrial Chemistry, University of Port Harcourt, Nigeria
  • 收稿日期:2016-01-25 修回日期:2016-04-05 出版日期:2016-10-28 发布日期:2016-11-19
  • 通讯作者: Ekemini Ituen:Department of Pure and Industrial Chemistry,University of Port Harcourt,Nigeria.E-mail address:ebituen@gmail.com.

Eco-friendly corrosion inhibitor from Pennisetum purpureum biomass and synergistic intensifiers for mild steel

Ekemini Ituen1,2, Abosede James3, Onyewuchi Akaranta2,3, Shuangqin Sun1   

  1. 1 Materials Physics and Chemistry Research Laboratory, College of Science, China University of Petroleum, Qingdao 266000, China;
    2 African Centre of Excellence in Oilfield Chemicals Research, Institute of Petroleum Studies, University of Port Harcourt, Nigeria;
    3 Department of Pure and Industrial Chemistry, University of Port Harcourt, Nigeria
  • Received:2016-01-25 Revised:2016-04-05 Online:2016-10-28 Published:2016-11-19

摘要: Extracts of elephant grass (Pennisetum purpureum) blended with some intensifier halides like ammonium chloride (AMC) and potassiumiodide (PTI) were investigated as corrosion inhibitor formild steel. The corrosion processwasmonitored in 3.5% HCl bymass loss and electrochemical techniques at 30, 40, 50, 60 and 90℃. Addition of AMC and PTI increased the inhibition efficiencywith the highest inhibition efficiency obtainedwith PTI blended extract. The blends behaved as mixed type inhibitors and were spontaneously adsorbed onmild steel surface in exothermic nature. Synergistic parameters of the intensifier ions revealed cooperative effect. Kinetic data treatment indicated increase in energy barrier by intensifier ions. The results demonstrate that elephant grass extract blended with halide ions can act as alternative ecofriendly inhibitor for mild steel at elevated temperatures.

关键词: Adsorption, Charge transfer resistance, Corrosion inhibitor formulations, Electrochemical techniques, Elephant grass

Abstract: Extracts of elephant grass (Pennisetum purpureum) blended with some intensifier halides like ammonium chloride (AMC) and potassiumiodide (PTI) were investigated as corrosion inhibitor formild steel. The corrosion processwasmonitored in 3.5% HCl bymass loss and electrochemical techniques at 30, 40, 50, 60 and 90℃. Addition of AMC and PTI increased the inhibition efficiencywith the highest inhibition efficiency obtainedwith PTI blended extract. The blends behaved as mixed type inhibitors and were spontaneously adsorbed onmild steel surface in exothermic nature. Synergistic parameters of the intensifier ions revealed cooperative effect. Kinetic data treatment indicated increase in energy barrier by intensifier ions. The results demonstrate that elephant grass extract blended with halide ions can act as alternative ecofriendly inhibitor for mild steel at elevated temperatures.

Key words: Adsorption, Charge transfer resistance, Corrosion inhibitor formulations, Electrochemical techniques, Elephant grass