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Citation: Dong Jun-Hua, Song Guang-Ling, Lin Hai-Chao, Cao Chu-Nan. The Adsoption of Thiourea and tis Derivatives on Iron Electrode in Acidic Solution[J]. Acta Physico-Chimica Sinica, ;1996, 12(01): 34-38. doi: 10.3866/PKU.WHXB19960108 shu

The Adsoption of Thiourea and tis Derivatives on Iron Electrode in Acidic Solution

1.
State Key Laboratory for Corrosion and Protection,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015

Received Date: 28 March 1995
Available Online: 15 January 1996

The cathodic adsorption beheaviors of thiourea and 4 of its derivatives on iron in hydrochloric acid and sulphuric acid were investigated by polarization curves. The accordance of the adsorption beheavior of thiourea on iron in sulphuric acid with Temkin isotherm was deduced from hynamics, and the thiourea took part in the reaction of HER, this phenomena is a negative catalytic effect. The adsorption beheavoris of thiourea and its 4 derivatives on iron in hydrochloric acid was found to be in accord with Langmuir isotherm and this conclusion was deduced from thermodynamics, this phenomena is a blocking effect.
- Thiourea,
- Derivatives,
- Iron;Adsorption,
- Cathodic polarization
  ,
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