2D and 3D alkaline earth metal carboxyphosphonate hybrids: Anti-corrosion coatings for metal surfaces

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.12.034· OSTI ID:21043941

Papadaki, Maria ^[1]; Raptis, Raphael G; Zhao, Hong ^[2]

---

1. Crystal Engineering, Growth and Design Laboratory, Department of Chemistry, University of Crete, Voutes Campus, Heraklion GR-71003, Crete (Greece)
2. Department of Chemistry, University of Puerto Rico at Rio Piedras, San Juan PR 00931-3346 (Puerto Rico)

Reactions of Mg{sup 2+} (1), Ca{sup 2+} (2), Sr{sup 2+} (3), or Ba{sup 2+} (4) salts with hydroxyphosphonoacetic acid (HPAA) at a 1:1 ratio yield M-HPAA layered coordination polymers. The crystal structures of 3 (two phases) and 4 have been determined by single crystal X-ray crystallography. Both stereoisomers (R and S) of HPAA are incorporated in the metal-HPAA materials. Synergistic combinations of Sr{sup 2+} or Ba{sup 2+} and HPAA at pH 7.3 are effective corrosion inhibitors for carbon steel, but are ineffective at pH 2.0. - Graphical abstract: Syntheses, characterization and crystal structures of metal-hydroxyphosphonoacetate hybrids are reported (Metal=Sr, Ba). 2D and 3D materials were prepared. Their anti-corrosion effects were studied at pH 2.0 and 7.3. It was found that anti-corrosion efficiency was demonstrated only at pH 7.3.

• OSTI ID: 21043941
• Journal Information: Journal of Solid State Chemistry, Vol. 181, Issue 3; Other Information: DOI: 10.1016/j.jssc.2007.12.034; PII: S0022-4596(08)00002-9; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BARIUM COMPOUNDS
BARIUM IONS
CALCIUM COMPOUNDS
CALCIUM IONS
CARBON STEELS
COATINGS
CORROSION
CORROSION INHIBITORS
CORROSION PROTECTION
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
MAGNESIUM COMPOUNDS
MAGNESIUM IONS
PH VALUE
PHOSPHONATES
POLYMERS
STRONTIUM COMPOUNDS
STRONTIUM IONS
SURFACES