4.4 Review

Plant extracts as green corrosion inhibitors for steel in sulphuric acid

Journal

CHEMICAL PAPERS
Volume 70, Issue 9, Pages 1131-1143

Publisher

SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1515/chempap-2016-0055

Keywords

sulphuric acid; carbon steel; plant extracts; corrosion inhibitor; adsorption

Funding

  1. National Natural Science Foundation of China [21273174]
  2. Municipal Natural Science Foundation of Chongqing City [CSTC-2013jjB00002]

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In recent years, plant extracts have become the focus of corrosion inhibitor research due to their low toxicity, easy availability and economical preparation. This review presents most of the recent contributions made to the application of plant extracts as corrosion inhibitors for steel in sulphuric acid, as well as in both hydrochloric acid and sulphuric acid. The constituents, properties, adsorption modes and inhibition mechanisms of these natural products are discussed. Evaluation methods and the factors that influence the corrosion-inhibition efficiency of plant extracts are also summarised. (c) 2016 Institute of Chemistry, Slovak Academy of Sciences

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