糠醛衍生物在盐酸溶液中的缓蚀性能研究

摘要以生物废料的提取物为原料制备绿色环保型缓蚀剂是重要的研究方向,糠醛是来源于生物质最有前途的化学平台物质之一。利用糠醛与三聚氰胺缩合制备了新型高效绿色缓蚀剂,即N²-(2-呋喃亚甲基)-1,3,5-三嗪-2,4,6-三胺(FMA),考察了FMA在1.0 mol·L^-1 HCl溶液中对低碳钢的缓蚀性能。室温静态失重结果表明,当FMA浓度为200 mg·L^-1时,缓蚀效率达95.14%;即使在338 K温度下,FMA缓蚀效率仍保持在90%以上;电化学测试结果表明,FMA为以抑制阳极过程为主的混合型缓蚀剂,其优异的缓蚀性能归因于能够在低碳钢表面形成符合Langmuir等温吸附模型的吸附膜;扫描电子显微镜(SEM)结果表明,表面含FMA的低碳钢在1.0 mol·L^-1 HCl溶液中浸泡6 h后,钢板表面依旧光滑平整。

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	史雪磊
	王纪孝
	高敏
	宋双双
	丛畅
	吴昌豪
	王志

关键词：腐蚀生物质电化学糠醛呋喃基席夫碱缓蚀剂

Abstract： It is a hot research point to prepare green corrosion inhibitors with bio-wastes as raw materials. Furfural is one of the most promising chemical platforms derived from biomass. Here, a new high-efficiency corrosion inhibitor, namely N²-(2-furylidene)-1,3,5-triazine-2,4,6-triamine (FMA), was prepared by condensation reaction of furfural and melamine. Corrosion inhibition performance of FMA in 1.0 mol·L^-1 HCl was characterized by weight loss test, electrochemical measurement and surface characterization. The static weight loss test results under room temperature condition show that the corrosion inhibition efficiency is as high as 95.14% under the condition of the FMA concentration at 200 mg·L^-1, while the temperature is up to 338 K, the corresponding corrosion inhibition efficiency remains above 90%. The electrochemical test results show that FMA is a mixed type corrosion inhibitor that mainly inhibits anode process, and its excellent corrosion inhibition performance is attributed to the ability to form an adsorption film on the surface of mild steel that obeys the Langmuir isotherm adsorption model.Scanning electron microscopy (SEM) results show that the surface of mild steel containing FMA is still smooth flat after being immersed in 1.0 mol·L^-1 HCl solution for 6 hours.

Keywords： corrosion biomass electrochemistry furfural furanyl Schiff base corrosion inhibitor

Received 2021-12-09;

Fund:化学工程联合国家重点实验室探索性课题(SKLoChE-17T01)。

Corresponding Authors: 王纪孝,教授,E-mail:jxwang@tju.edu.cn。 Email: jxwang@tju.edu.cn

About author: 史雪磊(1997-),男,硕士研究生,现从事金属防腐方面的研究。

引用本文:

史雪磊, 王纪孝, 高敏, 宋双双, 丛畅, 吴昌豪, 王志.糠醛衍生物在盐酸溶液中的缓蚀性能研究[J]. 化学工业与工程, 2023,40(5): 123-134

SHI Xuelei, WANG Jixiao, GAO Min, SONG Shuangshuang, CONG Chang, WU Changhao, WANG Zhi.Corrosion inhibition performance of furfural derivatives in hydrochloric acid solution[J]. Chemcial Industry and Engineering, 2023,40(5): 123-134

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