1. Corrosion inhibition of mild steel by the hydrolysate of an imidazoline-based inhibitor in CO2-saturated solution
- Author
-
Zhuoran Li, Rongrong Li, Huanxia Liu, Bin Wang, Jing Zhang, Jie Liu, Min Du, and Chengjie Li
- Subjects
Fatty acid amide ,Chemistry ,General Chemical Engineering ,Imidazoline receptor ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Phosphate ,01 natural sciences ,Hydrolysate ,0104 chemical sciences ,Catalysis ,Hydrolysis ,chemistry.chemical_compound ,Amine gas treating ,Ammonium ,0210 nano-technology ,Nuclear chemistry - Abstract
The synthesized imidazoline phosphate quaternary ammonium salt has low stability, which is spontaneously and rapidly hydrolyzed to the long-chain fatty acid amide (LFA). The hydrolysate (LFA) has been found to be an efficient inhibitor for Q235 steel against CO2 corrosion, which yields a maximum value above 90% at a concentration of 1000 mg L−1. The LFA inhibitor acts as an anodic type inhibitor and its inhibition mechanism is a “negative catalysis effect”. The heteroatoms in the acyl, amine and phosphate groups in the LFA molecule are the active centers to bond with Fe atoms to form a chemisorbed film on the steel surface.
- Published
- 2019
- Full Text
- View/download PDF