CAJ | 학술논문

以肉桂醛、苯乙酮和苯胺为原料，环糊精为相转移催化剂，在水相中经过醛酮胺缩合得到曼尼希碱缓蚀剂。在模拟炼油厂常减压装置的腐蚀介质条件下，通过挂片失重法和极化曲线法确定了环糊精最佳质量分数为0.3%，采用挂片失重法、动电位极化曲线法和交流阻抗法考察了该曼尼希碱的缓蚀性能。结果表明，曼尼希碱是以抑制阳极过程为主的混合型缓蚀剂，缓蚀率随曼尼希碱的质量分数增加而增大，当缓蚀剂的体积分数为0.2%时，缓蚀率达到94.37%，能够有效抑制 HCl-H 2 S-H 2 O 体系中20#碳钢的腐蚀。
이육계철、분을동화분알위원료，배호정위상전이최화제，재수상중경과철동알축합득도만니희감완식제。재모의련유엄상감압장치적부식개질조건하，통과괘편실중법화겁화곡선법학정료배호정최가질량분수위0.3%，채용괘편실중법、동전위겁화곡선법화교류조항법고찰료해만니희감적완식성능。결과표명，만니희감시이억제양겁과정위주적혼합형완식제，완식솔수만니희감적질량분수증가이증대，당완식제적체적분수위0.2%시，완식솔체도94.37%，능구유효억제 HCl-H 2 S-H 2 O 체계중20#탄강적부식。
Mannich inhibitor was synthesized using cinnamaldehyde,acetophenone and aniline as raw materials,Cyclodextrins as phase transfer catalyst,through condensation of aldehydes and ketones amine generate in the aqueousphase.Under corrosive conditions of refinerycrude oil distillationunit,the optimum polarization extrin amount 0.3% was determined by taking weight loss method and curve scyclod.Effect of the corrosion inhibition of the mannich alkali was investigated using the weight loss method,potentiodynamic polarization and electrochemical impedance spectroscopy .The results showed that the Mannich base was a mixed corrosion inhibitor mainly by restraining the anodic process,and the inhibition rate increased with increasing of Mannich base concentration.When the amount of inhibitor concentration was 0.2%,the inhibition rate reached 94.37%,and Mannich base can effectively inhibit corrosion of 20 # steel in the HCl-H 2 S-H 2 O system.