喹啉季铵盐中氯和溴对其缓蚀性能的影响
Effects of Chlorine and Bromine in Quinoline Quaternary Ammonium Salts on Its Corrosion Inhibition Performance
摘 要
以喹啉为母体，以氯化苄、溴化苄为季铵化试剂，制得两种喹啉季铵盐缓蚀剂。采用失重法、电化学方法、扫描电镜(SEM)及能谱分析(EDS)法考察两种缓蚀剂单独使用以及不同复配条件下的缓蚀性能。结果表明:溴化苄基喹啉(BQB)与增效剂复配后，其缓蚀率可以达到98.73%；在相同条件下BQB的缓蚀性能优于氯化苄基喹啉(BQC)的；两种喹啉季铵盐在碳钢表面的吸附符合Langmuir吸附等温式，是一个自发、放热的混合吸附过程；BQC的吉布斯吸附自由能和活化能均大于BQB的。
喹啉季铵盐
吸附机理
inhibitor
quaternary ammonium salt
adsorption mechanism
Abstract
Two different quinoline quaternary ammonium salts were successfully synthesized using quinolone as matrix, benzyl chloride and benzyl bromide as link agents respectively. Weight loss measurement, electrochemical testing, electron scanning microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to evaluate the corrosion inhibition performance in individual use and compound use of the two inhibitors. The experiment results show that benzyl quinolinium bromide (BQB) compound with synergistic agent had an inhibition efficiency of 98.73% and the corrosion inhibition performance of BQB is better than that of benzyl quinolinium chloride (BQC). The adsorption of BQC and BQB molecules on carbon steel surface is a spontaneous and exothermic process which obeys the Langmuir isothermal adsorption model. However, the Gibbs free energy and the activation energy of BQB are higher than those of BQC.
中图分类号 TG174.42 DOI 10.11973/fsyfh-201604011
所属栏目 试验研究
基金项目
收稿日期 2015/2/4
修改稿日期
网络出版日期
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备注唐鋆磊(1983-),副教授,博士,从事腐蚀与防护技术研究,
引用该论文: WANG Hu,LI Chen-chen,TANG Jun-lei,LI Yong-huai,ZHU Yuan-qiang,JING Ya. Effects of Chlorine and Bromine in Quinoline Quaternary Ammonium Salts on Its Corrosion Inhibition Performance[J]. Corrosion & Protection, 2016, 37(4): 321
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参考文献
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【5】罗胜联，陈金华，陈凡，等. 卤素离子与苯并三氮唑协同成膜动力学的体声波传感技术研究[J]. 湖南大学学报(自然科学版),2002,29(1):52-57.
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【7】MARTINE S,STERNT I. Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in the low carbon steel-mimosa tannin/sulfuric acid system[J]. Applied Surface Science,2002,199(1/4):83-89.
【8】HOHENBERG P,KOHN W. Inhomogeneous electron gas[J]. Physical Review,1964,136:864-871.
【9】陈怀兵，李养池，张新发，等. 油酸基咪唑啉缓蚀剂缓蚀性能和量子化学计算[J]. 腐蚀与防护，2014,35(12):1234-1238.
【10】蒋平，赵力云，万朝晖，等. 喹啉季铵盐缓蚀性能评价[J]. 油田化学,2011,28(2)：219-223.
【11】RAWAT N S,UDAYABHANU G. Synergistic effects of halide ions and benzyl amine on electrochemical behaviour of mild steel in dilute sulfuric acid[J]. Key Engineering Materials,1991(20/28):2963-2970.
【12】GOMMA G K. Corrosion of low-carbon steel in sulphuric acid solution in presence of pyrazole-halides mixture[J]. Materials Chemistry and Physics,1998,55(3):241-246.
【13】王成，江峰，王福会. 有机胺对铝合金在3.5%氯化钠溶液中的缓蚀作用[J]. 腐蚀与防护,2003,24(4):139-142.
【14】冉润欣，范晓丽，杨永亮，等. 不同覆盖度下丙硫醇在Au(111)面吸附的理论研究[J]. 物理学报,2013,62(22):101-104.
【15】王新刚，王晶，张波，等. 油酸基咪唑啉类缓蚀剂的复配及其缓蚀性能研究[J]. 材料保护,2008,41(1):20-23.
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