ArticleMolecules (Basel, Switzerland)2022
Natural Product-Derived Phosphonic Acids as Corrosion Inhibitors for Iron and Steel.
Article in Molecules (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 15 citations in OpenAlex.
- Eco-Friendly In-Situ Zwitterionization of Stent Metals with Phosphonic Sulfobetaine Copolymers for Durable Antibiofouling and Hemocompatibility.Langmuir : the ACS journal of surfaces and colloids · 2026Article
- Study on the Morphological Distribution and Formation Mechanisms of Residual Polymer in Polymer-Containing Wastewater.ACS omega · 2026Article
- Alkali salts of amino acids as alkaline additives for neutralization of acidic corrosion inhibitors.Amino acids · 2023Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
Organic acids, typically derived from an oil-based value chain, are frequently used as corrosion inhibitors in industrial metal working fluids. The criteria for selection of these corrosion inhibitors have changed in the last decades, and are today not only performance-driven, but influenced by ecological considerations, toxicity and regulatory standards. We present scalable semisynthetic approaches to organic corrosion inhibitors based on phosphonic acids from renewable resources. They have been evaluated by chip filter assay, potentiodynamic polarization measurements, electrochemical impedance measurements and gravimetry for corrosion protection of iron and steel in an aqueous environment at slightly alkaline pH. The efficacy of several phosphonic acids tested was found to be strongly dependent on structural features influencing molecular self-assembly of protective layers, and the solubility of salts formed with di- and trivalent cations from the media or formed during corrosion. A carboxyphosphonic acid (derived from castor oil) was found to have remarkable anticorrosive effects in all media tested. We attribute the anticorrosion properties of this carboxyphosphonic acid to the formation of particularly stable protective layers on the metal surface. It might thus serve as a commercially attractive substitute for current acidic corrosion inhibitors, derived from renewable resources.
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Registered trials
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