药物莫西沙星对Q235钢在盐酸溶液中的缓蚀作用

doi:10.11944/j.issn.1000-0518.2017.08.170039

摘要/Abstract

摘要：

为了探寻新的环境友好型缓蚀剂,采用电化学方法、失重法和量子化学计算研究了莫西沙星在1 mol/L HCl溶液中对Q235钢的缓蚀性能和缓蚀机理。结果表明,莫西沙星对Q235钢在盐酸溶液中是一种良好的以抑制阴极为主的混合抑制型缓蚀剂,缓蚀效率随其浓度的增加而增大,但随温度增加而减小,35 ℃下,在其浓度为200 mg/L时,缓蚀效率达90%;莫西沙星在Q235钢表面的吸附为自发过程,且符合Langmuir和El-Awady等温方程,同时,计算和讨论了相关的热力学和动力学参数。此外,采用量子化学计算对莫西沙星的缓蚀机理进行了进一步的分析,结果发现,莫西沙星的缓蚀作用由物理吸附和化学吸附共同产生。

关键词: 莫西沙星, Q235钢, 缓蚀剂, 吸附

Abstract:

In order to develop new environment-friendly corrosion inhibitors, the corrosion inhibition of Q235 steel by moxifloxacin in 1 mol/L HCl solution and its mechanism were investigated using electrochemical measurements, mass loss method and quantum chemistry calculation. The results reveal that moxifloxacin is an effective mixed-type inhibitor with a predominantly cathodic action for the corrosion of Q235 steel in HCl solution. The inhibition efficiency increases with increased concentration of the inhibitor, but decreases with incremental temperature. The adsorption of moxifloxacin on steel surface is a spontaneous process, and obeys the Langmuir isotherm as well as the El-Awady thermodynamic-kinetic model. Accordingly, the thermodynamic and kinetic parameters were calculated and discussed. Moreover, quantum chemistry calculation was employed to give further insight into the inhibition mechanism of moxifloxacin, and the results showed that the corrosion inhibition of moxifloxacin was caused by physical adsorption and chemical adsorption.

Key words: moxifloxacin, Q235 steel, corrosion inhibitor, adsorption

郑兴文, 龚敏, 陈仕林. 药物莫西沙星对Q235钢在盐酸溶液中的缓蚀作用[J]. 应用化学, 2017, 34(8): 955-964.

ZHENG Xingwen, GONG Min, CHEN Shilin. Corrosion Inhibition of Q235 Steel by Moxifloxacin in Hydrochloric Acid Solution[J]. Chinese Journal of Applied Chemistry, 2017, 34(8): 955-964.

参考文献

[1]	Gece G. Drugs:A Review of Promising Novel Corrosion Inhibitors[J]. Corros Sci,2011,53(12):3873-3898.
[2]	ZHENG Qingsi. Overview of the Clinical Application of Moxifloxacin Hydrochloride[J]. Acta Med Sin,2014,27(1):195-197(in Chinese). 郑清四. 盐酸莫西沙星的临床应用进展[J]. 华夏医学,2014,27(1):195-197.
[3]	LU Dingqiang,WANG Weibao,LING Youquan,et al.Progress in Synthesis and Applications of Moxifloxacin Hydrochloride[J]. Mod Chem Ind,2014,34(2):33-37(in Chinese). 卢定强,王维胞,凌岫泉,等. 新一代喹诺酮类盐酸莫西沙星的合成及应用研究进展[J]. 现代化工,2014,34(2):33-37.
[4]	YAN Yin,LIU Ruiquan. Synthesis of Aryloxymethyl Imidazolinium Quaternary Ammonium Salt and Its Evaluation as a Corrosion Inhibitor[J]. Chinese J Appl Chem,2014,31(7):852-859(in Chinese). 燕音,刘瑞泉. 芳氧亚甲基咪唑啉季铵盐的合成及缓蚀性能评价[J]. 应用化学,2014,31(7):852-859.
[5]	WEI Jian,XIE Bin,LAI Chuan,et al.Synthesis, Characterization and Corrosion Inhibition of N,N-Diethylammonium O,O'-(2-Methyl-2,4-pentylene) Dithiophosphate[J]. Chinese J Appl Chem,2016,33(2):190-199(in Chinese). 魏健,谢斌,赖川,等. O,O'-(2-甲基-2,4-亚戊基)二硫代磷酸-N,N-二乙铵的合成、表征及缓蚀性能评价[J]. 应用化学,2016,33(2):190-199.
[6]	LI Xianghong,DENG Shuduan,FU Hui. Corrosion Inhibition of 2-Aminopyrimidine for Steel in Hydrochloric Acid Media[J]. Chinese J Appl Chem,2012,29(2):209-215(in Chinese). 李向红,邓书端,付惠. 2-氨基嘧啶在盐酸介质中对钢的缓蚀性能[J]. 应用化学,2012,29(2):209-215.
[7]	Zheng X,Zhang S,Li W,et al.Investigation of 1-Butyl-3-Methyl-1H-menzimidazolium Iodide as Inhibitor for Mild Steel in Sulfuric Acid Solution[J]. Corros Sci,2014,80(3):383-392.
[8]	Zheng X,Zhang S,Gong M,et al.Experimental and Theoretical Study on the Corrosion Inhibition of Mild Steel by 1-Octyl-3-methylimidazolium L-Prolinate in Sulfuric Acid Solution[J]. Ind Eng Chem Res,2014,53(42):16349-16358.
[9]	SU Tiejun,LI Kehua,LUO Yunbai. Inhibition Behavior of 1-Phenylaminomethylbenzimidazole for Mild Steel in Hydrochloric Acid[J]. Chinese J Appl Chem,2015,32(4):464-471(in Chinese). 苏铁军,李克华,罗运柏. 盐酸中1-苯胺甲基苯并咪唑对碳钢的缓蚀行为[J]. 应用化学,2015,32(4):464-471.
[10]	LI Mingli,LIU Dan,CAO Shuyun,et al.Corrosion Inhibition of Q235 Steel in HCl Solution by Brönsted Acid Ionic Liquid[J]. J Chinese Soc Corros Prot,2015,35(5):400-406(in Chinese). 李明丽,刘丹,曹淑云,等. 盐酸介质中Brönsted酸离子液体对Q235钢的缓蚀行为[J]. 中国腐蚀与防护学报,2015,35(5):400-406.
[11]	ZHANG Honghong,XIE Yan,LIU Yuanwei,et al.Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Salicylaldehyde Thiosemicarbazone[J]. Chinese J Appl Chem,2015,32(6):720-725(in Chinese). 张红红,谢彦,刘元伟,等. 盐酸介质中水杨醛缩氨基硫脲对碳钢的缓蚀作用[J]. 应用化学,2015,32(6):720-725.
[12]	CHEN Wen,GUAN Chunping,YANG Shenming,et al.Corrosion Inhibition of Equisetum Ramosissimum Extractive for Carbon Steel in Hydrochloric Acid Solution[J]. J Chinese Soc Corros Prot,2016,36(2):177-184(in Chinese). 陈文,管春平,杨申明,等. 节节草提取物在盐酸介质中对碳钢的缓蚀行为研究[J]. 中国腐蚀与防护学报,2016,36(2):177-184.
[13]	WANG Chunxia,CHEN Jingping,ZHANG Xiaohong,et al.Corrosion Inhibition of Octyl Isoquinolinium Bromide on Q235 Carbon Steel in HCl Solution[J]. J Chinese Soc Corros Prot,2016,36(3):245-252(in Chinese). 王春霞,陈敬平,张晓红,等. 溴化N-辛烷异喹啉在盐酸溶液中对Q235碳钢的缓蚀行为[J]. 中国腐蚀与防护学报,2016,36(3):245-252.
[14]	Oguzie E E,Enenebeaku C K,Akalezi C O,et al.Adsorption and Corrosion-Inhibiting Effect of Dacryodis Edulis Extract on Low-Carbon-Steel Corrosion in Acidic Media[J]. J Colloid Interface Sci,2010,349:283-292.
[15]	Hegazy M A,Badawi A M, Rehim S S A E, et al. Corrosion Inhibition of Carbon Steel Using Novel N-(2-(2-Mercaptoacetoxy)ethyl)-N,N-dimethyl Dodecan-1-aminium Bromide During Acid Pickling[J]. Corros Sci,2013,69(2):110-122.
[16]	Cao Z,Tang Y,Cang H,et al.Novel Benzimidazole Derivatives as Corrosion Inhibitors of Mild Steel in the Acidic Media.Part II:Theoretical Studies[J]. Corros Sci,2014,83(6):292-298.
[17]	LIAN Bingjie,SHI Zemin,XU Hui,et al.Adsorption Mechanism of Azole Corrosion Inhibitors on Cu Surface[J]. Surf Technol,2015,44(12):19-26(in Chinese). 廉兵杰,石泽民,徐慧,等. 唑类缓蚀剂在铜表面的吸附机理[J]. 表面技术,2015,44(12):19-26.
[18]	Obi-Egbedi N O,Obot I B. Inhibitive Properties, Thermodynamic and Quantum Chemical Studies of Alloxazine on Mild Steel Corrosion in H2SO4[J]. Corros Sci,2011,53(1):263-275.