一种双缩水合肼Schiff碱的合成及其酸化缓蚀性能
Synthesis and Inhibition Performace of a Hydrazine Bis-Schiff Base as Acidification Corrosion Inhibitor
摘 要
以水合肼和肉桂醛为原料合成了一种新型Schiff碱酸化缓蚀剂（DCH），用红外光谱法（FI-RT）、化学元素分析法和核磁共振法对其结构进行表征；通过静态失重法和电化学方法考察了其在15%（质量分数，下同）HCl中对N80钢的缓蚀作用。结果表明：DCH是一种混合型酸化缓蚀剂，可在N80钢表面形成保护膜，有效抑制酸液的腐蚀；当DCH加入量为0.75%时，N80钢的腐蚀速率为2.27 g·m-2·h-1，缓蚀率高达99.81%；DCH在N80钢表面的吸附规律符合Langmuir吸附模型。
酸化缓蚀剂
静态失重法
电化学
吸附等温线
Schiff base
acid inhibitor
static weight loss method
electrochemistry
adsorption isotherm
Abstract
A new Schiff base 1,1'-dicinnamylidene-hydrazine (DCH) as acid inhibitor was prepared through condensation reaction using hydrazine hydrate and cinnamaldehyde. The chemical structure of DCH was confirmed by elementary analysis, Fourier transform infrared (FI-RT) and nuclear magnetic resonance (NMR) spectroscopy. The corrosion inhibitive performance of the inhibitor for N80 steel in 15% HCl solution were investigated by static weight loss method and electrochemical methods. The results indicated that DCH was a mixed acid inhibitor and could effectively inhibit the corrosion in acid solution by forming protective layer on N80 surface. The corrosion rate and inhibitive efficiency reached 2.27 g·m-2·h-1 and 99.81% respectively, when the dosage of DCH was 0.75%. The adsorption process of DCH ont the steel surface obeyed Langmuir adsorption isotherm.
中图分类号 TG174.42 DOI 10.11973/fsyfh-201701010
所属栏目 试验研究
基金项目
收稿日期 2015/7/22
修改稿日期
网络出版日期
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引用该论文: ZHAN Feng-tao,GAO Tong-hai,YANG Zheng,DING Peng-peng,ZHOU Xin-yuan,LÜ,Zhi-feng. Synthesis and Inhibition Performace of a Hydrazine Bis-Schiff Base as Acidification Corrosion Inhibitor[J]. Corrosion & Protection, 2017, 38(1): 45
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参考文献
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【9】杨震,战风涛,胡以朋,等. 氯化苄基喹啉衍生物的高效缓蚀性能研究[C]//第十八届全国缓蚀剂学术讨论会论文集.[出版地不详]:[出版者不详],2014:151-155.
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【11】彭雪飞,冯浦涌,王贵,等. 一种曼尼希碱季铵盐缓蚀剂的合成与性能研究[J]. 腐蚀与防护,2010,31(5):345-348.
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