银杏叶提取物对碳钢在CO2体系中的缓蚀性能

doi:10.3969/j.issn.1000-1565.2016.03.008

河北大学学报(自然科学版) ›› 2016, Vol. 36 ›› Issue (3): 264-268.DOI: 10.3969/j.issn.1000-1565.2016.03.008

银杏叶提取物对碳钢在CO₂体系中的缓蚀性能

苏芳¹,顾明广¹,赵景茂²

收稿日期:2015-08-16 出版日期:2016-05-25 发布日期:2016-05-25
作者简介:苏芳(1979-),女,江苏淮安人,燕京理工学院讲师,主要从事精细化学品研究. E-mail:suyifeng1@sina.com
基金资助:
国家自然科学基金资助项目(51471021)

Inhibition of carbon steel corrosion in solution saturated with CO₂ by ginkgo leaves extract

SU Fang¹,GU Mingguang¹,ZHAO Jingmao²

1.School of Chemical and Materials Engineering, Yanching Institute of Technology, Sanhe 065201, China; 2.College of Materials Science and Engineering, Beijing Universityof Chemical Technology, Beijing 100061, China

Received:2015-08-16 Online:2016-05-25 Published:2016-05-25

摘要/Abstract

摘要： 用超生波辅助浸提法从银杏叶中提取有机缓蚀组分,并将其作为饱和二氧化碳盐水溶液中缓蚀剂的主要成分.对以银杏叶浸泡提取物为主的复合缓蚀剂的缓蚀效果进行了研究,实验表明:银杏叶提取物的缓蚀率最高可达84.7%,与硫脲复配后缓蚀率最高达到94.7%.电化学研究表明:银杏叶提取液与硫脲复配的缓蚀剂为混合型缓蚀剂.

关键词: 银杏叶, 缓蚀剂, CO₂, 腐蚀

Abstract: The active ingredients of ginkgo leaves were extracted by ultrasonic-assisted extraction.The inhibition effect of ginkgo leaves extract(QLE)on carbon steel corrosion in NaCl solution saturated with CO₂ was studied.Experimental results showed that QLE is a good corrosion inhibitor with maximum inhibition efficiency up to 84.7% and to 94.7% when combined with thiourea.Polarization curves reveal that QLE combined with thiourea behaves like a mixed-type corrosion inhibitor.

Key words: ginkgo leaves, corrosion inhibitor, CO₂, corrosion

中图分类号:

TG174

苏芳,顾明广,赵景茂. 银杏叶提取物对碳钢在CO₂体系中的缓蚀性能[J]. 河北大学学报(自然科学版), 2016, 36(3): 264-268.

SU Fang,GU Mingguang,ZHAO Jingmao. Inhibition of carbon steel corrosion in solution saturated with CO₂ by ginkgo leaves extract[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(3): 264-268.

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银杏叶提取物对碳钢在CO₂体系中的缓蚀性能

Inhibition of carbon steel corrosion in solution saturated with CO₂ by ginkgo leaves extract

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