| 鲜白酒糟提取液对Q235钢硫酸酸洗的缓蚀性能 |
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| 引用本文： | 谢斌,赖川,曾倪,黄春,易彬,赵金松,张婷. 鲜白酒糟提取液对Q235钢硫酸酸洗的缓蚀性能[J]. 材料保护, 2012, 45(4): 55-57,74,75 |
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| 作者姓名： | 谢斌 赖川 曾倪 黄春 易彬 赵金松 张婷 |
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| 作者单位： | 1.四川理工学院,功能材料研究所／四川理工学院,绿色催化四川省高校重点实验室;2.四川理工学院,功能材料研究所／四川理工学院材料与化学工程学院,四川自贡643000;3.四川理工学院材料与化学工程学院,四川自贡,643000;4.泸州品创科技有限公司,四川泸州646000） |
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| 基金项目： | 泸州老窖科研奖学金项目(09ljzk10);四川省科技厅科技支撑计划项目(2010GZ0130);四川理工学院科研基金项目(2009XJKPL004);四川理工学院大学生创新基金项目(CX20111307) |
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| 摘 要： | 为了综合利用白酒糟和开发新型绿色酸洗缓蚀剂,制取了鲜白酒糟提取液,采用失重法和电化学法研究了其作为硫酸酸洗缓蚀剂的缓蚀性能。结果表明：15g酒糟在300mL5％硫酸溶液中30℃静置浸泡6h,得到的提取液在5％硫酸介质中对Q235钢的缓蚀率最高;酒糟提取液在Q235钢表面的吸附符合E1-Awady动力学模型和Flory-Huggins吸附等温方程,属于几何覆盖效应的单分子层吸附,提取液为混合型缓蚀剂;放置时间延长时,提取液的缓蚀率降低。
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| 关 键 词： | 缓蚀剂 酒糟提取液 硫酸 Q钢 失重法 电化学法 |
Corrosion Inhibition Performance of Extract from Fresh Distiller Grains for Q235 Steel Subjected to Pickling in Sulfuric Acid |
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| XIE Bin,a,b,LAI Chuan,a,c,ZENG Ni,c,HUANG Chun,c,YI Bin,ZHAO Jin-song,ZHANG Ting. Corrosion Inhibition Performance of Extract from Fresh Distiller Grains for Q235 Steel Subjected to Pickling in Sulfuric Acid[J]. Journal of Materials Protection, 2012, 45(4): 55-57,74,75 |
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| Authors: | XIE Bin a b LAI Chuan a c ZENG Ni c HUANG Chun c YI Bin ZHAO Jin-song ZHANG Ting |
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| Affiliation: | 1c(1a.Institute of Functionalized Materials,b.Key Laboratory of Green Catalysis of Sichuan Institutes of Higher Education,c.School of Material and Chemical Engineering,Sichuan University of Science & Engineering,Zigong 643000,China;2.Luzhou Pinchuang Technology Company Ltd.,Luzhou 646000,China) |
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| Abstract: | Distiller grains were extracted,and resultant extract was used as inhibitor for preventing corrosion of Q235 steel pickled in sulfuric acid.The inhibition performance of the extract was evaluated using weight loss method and electrochemical method.It was found that the extract from the distiller grains immersed in 300 mL sulfuric acid(mass fraction 5%) at 30 ℃ for 6 h possessed the best inhibition efficiency for the steel pickled in the sulfuric acid.Moreover,the adsorption of the extract of distiller grains on the surface of the steel could be well described with the El-Awady dynamic model and the Flory-Huggins isothermal adsorption equation,which was dominated by monolayer adsorption with geometric covering effect.Besides,the extract was mixed-type inhibitor,and its inhibition efficiency declined with extended storage time. |
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| Keywords: | corrosion inhibitor extract from distiller grains sulfuric acid Q235 steel weight loss method electrochemical method |
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