共查询到18条相似文献,搜索用时 171 毫秒
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以葡萄糖酸盐、醇胺磷酸酯、表面活性剂、添加剂等合成了盐水介质碳钢缓蚀剂并用腐蚀失重法进行了评价。在 22.5%盐水介质中,硫酸锌:葡萄糖酸钙:钼酸盐:硫脲:醇胺磷酸酯:十二烷基苯磺酸钠=3.0:1.0:0.5:0.2:0.2:0.05,50℃时,碳钢缓蚀 率可达98%以上。 相似文献
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以邻硝基氯苯和水合肼为原料,两步法合成了苯并三氮唑。第一步,采用溶液法合成了1-羟基苯并三氮唑(HBTA)。第二步,采用HBTA在盐酸存在下用铁粉还原成苯并三氮唑。对还原工艺进行了探讨与优化。综合考虑了各种因素对制备工艺的影响,得到的较佳工艺条件为:邻硝基氯苯:水合肼:异辛醇为1:4.5:1,反应温度110℃,反应5h,产品收率达95.2%,含量为99.4%。HBTA还原成苯并三氮唑最佳工艺条件:以工业铁粉作还原剂,n(HBTA):n(Fe)=1:3,还原温度80℃,反应时间5h,收率为82.3%。两步生成苯并三氮唑总收率为78.4%。 相似文献
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由1-金刚烷醇与苯并三氮唑在浓硫酸介质下,室温搅拌2 h合成N-1-(1-金刚烷基)苯并三氮唑,产率为95%;产物结构经IR,1H NMR,13C NMR以及NOE等手段进行表征;该合成方法具有简便快速、产率高等优点。 相似文献
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有机膦酸缓蚀剂的研究发展现状 总被引:2,自引:0,他引:2
介绍了缓蚀剂的类型、缓蚀机理和缓蚀性能,比较了各种缓蚀剂的特点,认为有机膦缓蚀剂具有无毒性、污染小的特点,尤其在应用于高硬度、高pH值和高温水系统时有较好的表现。 相似文献
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以聚天冬氨酸、聚环氧琥珀酸、葡萄糖酸钠以及增效剂为原料,制备了一种新型的缓蚀阻垢剂。采用挂片腐蚀和静态阻垢实验,研究了其缓蚀和阻垢性能,结果表明,该缓蚀阻垢剂的质量浓度为100 mg/L时,缓蚀率可达89.04%,具有良好的缓蚀性能,其阻垢效果均明显优于油田常用缓蚀阻垢剂。 相似文献
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The corrosion and passivation behaviors of alloys with different Cu–Ni ratios were investigated in acidic sulfate solutions. The corrosion rate was calculated and the corrosion inhibition process was investigated using different amino acids as corrosion inhibitors. For these investigations conventional electrochemical techniques and electrochemical impedance spectroscopy (EIS) were used. Fitting of the experimental impedance data to theoretical values enables understanding of the corrosion inhibition mechanism and the suggestion of a suitable electrical model to explain the behavior of the alloys under different conditions. The investigation of the electrochemical behavior of alloys before and after the corrosion inhibition processes has shown that some amino acids like lysine have promising corrosion inhibition efficiency at very low concentrations. A model for the electrode/electrolyte interface during the corrosion inhibition processes was suggested and the validity of the model for the explanation of the corrosion inhibition phenomena was discussed. 相似文献