Adsorption and Corrosion Performance of New Cationic Gemini Surfactants Derivatives of Fatty Amido Ethyl Aminium Chloride with Ester Spacer for Mild Steel in Acidic Solutions

Abstract

Three new cationic gemini surfactants with ester spacer type 2-2′-(ethane-1,2-diyl bis(oxy)) bis(N-(2-alkanamidoethyl)-N,N-dimethyl-2-oxoethan-1-aminium)) dichloride) (CGSES12, CGSES14 and CGSES16), based on N,N-dimethyl fatty amido ethylamine, were produced. These gemini quaternary ammonium salts were synthesized using a three-step reaction method, starting from th/e condensation of the fatty acid chloride (RCOCl) of various hydrophobic chain lengths (R, C11H23, C13H27, C15H31) with N,N-dimethyl ethylene diamine, followed by the quaternization of the tertiary amino group formed with the spacer of the ester group formed in the second step. The chemical configuration of the surfactants was established by FT-IR, 1HNMR, 13CNMR and Mass spectroscopies. The inhibition performance of three surfactants was studied by weight loss and electrochemical measurements. The results show that CGSES12, CGSES14 and CGSES16 behave as effective inhibitors and surface agents. The maximum efficiency was higher than 94% at 2.5 mM, and the inhibition order was CGSES16 > CGSES14 > CGSES12. This was due to the increment in hydrophobicity of the gemini surfactants. Their adsorption on a mild steel surface followed the Langmuir isotherm. CGSES12, CGSES14 and CGSES16 can be considered mixed-type inhibitors. The presence of CGSES12, CGSES14 and CGSES16 increased charge transfer resistance and decreased the corrosion rate. The adsorption focused on heteroatoms and the surface properties of cationic gemini surfactants.

Quaternary Ammonium Salts: Insights into Synthesis and New Directions in Antibacterial Applications

“…75 For example, Bin-Hudayb et al synthesized a series of GQASs with amide and ester groups, which undoubtedly enhanced the degradation performance of the GQASs. 76 GQASs also tend to show better wettability, and their biodegradability is roughly equivalent to that of typical single-chain QASs.…”

“…In addition, with the innate advantages of two charges, the shortcomings of QASs can be overcome without changing the antibacterial activity by introducing functional groups on the two branch chains, such as introducing ester groups to reduce the biotoxicity of QASs . For example, Bin-Hudayb et al synthesized a series of GQASs with amide and ester groups, which undoubtedly enhanced the degradation performance of the GQASs . GQASs also tend to show better wettability, and their biodegradability is roughly equivalent to that of typical single-chain QASs.…”

Adsorption Study of Novel Gemini Cationic Surfactant in Carbonate Reservoir Cores—Influence of Critical Parameters

“…This includes nonionic, cationic, anionic, and zwitterionic surfactants. More recently, the use of natural, viscoelastic, polymeric, and gemini surfactants has received prodigious attention [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ].…”

Effect of Quaternary Ammonium Salts and 1,2,4-Triazole Derivatives on Hydrogen Absorption by Mild Steel in Hydrochloric Acid Solution

“…Compounds of various nature are widely studied as corrosion inhibitors (CIs) of steels in this medium [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Of these, quaternary ammonium salts (QASs) [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ] often used as components of industrial mixed CIs are important from a practical point of view. Triazole derivatives are a new promising class of acid corrosion inhibitors for steel that possess unique protective properties [ 31 , 32 , 33 , 34 , 35 ].…”