两种以氯乙酸为季铵化试剂的多环咪唑啉季铵盐的合成及在酸性条件下对钢的缓蚀性能的比较研究

Two Types of Acid Reagents for the Multi-quaternized Imidazoline Ring and the Synthesis of Quaternary Ammonium Salt in Acidic Corrosion of Steel Under Conditions of Comparative Study of Performance

本文以α-氯乙酸作为季铵化试剂,合成Cl-1和Cl-2两种多环咪唑啉季铵盐,并采用失重法和电化学方法,分析其在酸性条件下对钢的缓蚀性能。研究显示,在1mol/L HCl中Cl-1和Cl-2对N80钢均有一定的缓蚀性能,属于阳极型缓蚀剂,缓蚀性能大小顺序为Cl-2>Cl-1。两种化合物在N80钢表面上的吸附服从Langmuir吸附等温式,属于化学吸附。

This article focuses onα-Chloroacetic acid was used as a quaternary ammonium reagent to synthesize two polycyclic imidazoline quaternary ammonium salts,Cl-1 and Cl-2,and their corrosion inhibition performance on steel under acidic conditions was analyzed using weight loss and electrochemical methods.Research has shown that both Cl-1 and Cl-2 have certain corrosion inhibition performance on N80 steel in 1mol/L HCl,belonging to the anode type corrosion inhibitor.The order of corrosion inhibition performance is Cl-2>Cl-1.The adsorption of two compounds on the surface of N80 steel follows the Langmuir adsorption isotherm and belongs to chemical adsorption.