无花果和橄叶提取物作为酸溶液中铜的环保腐蚀抑制剂
M A Ragab1, O Abdelwahab2, N K Amin1
1Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt.
Scientific reports
|October 1, 2025
概括
橄叶提取物 (OLE) 和无花果叶提取物 (FLE) 显示出作为酸中铜的环保腐蚀抑制剂的前景. 无花果叶提取物表现出卓越的性能,突出了植物性溶液的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 绿色化学 绿色化学
背景情况:
- 铜在酸性介质中的腐蚀给工业带来了重大挑战.
- 合成腐蚀抑制剂通常具有环境缺点.
- 植物提取物提供可持续的替代品.
研究的目的:
- 评估橄叶提取物 (OLE) 和无花果叶提取物 (FLE) 作为对盐酸 (HCl) 中铜的环保腐蚀抑制剂.
- 为了比较OLE和FLE在不同度和HCl度的抑制效率.
- 为了研究溶液流速和吸附机制对腐蚀抑制的影响.
主要方法:
- 在HCl溶液中的铜上用OLE和FLE进行了电化学腐蚀试验.
- 抑制剂度在0.5到2M HCl中从0.25到1g/L不等.
- 分析了吸附等温体 (Freundlich) 和表面相互作用.
主要成果:
- 无论是OLE还是FLE都显著抑制了铜腐蚀.
- 与OLE相比,FLE在0.5M HCl时表现出更高的抑制效率 (高达69%) 和高达47%的OLE.
- 抑制效率随着HCl度的增加而下降,但随着流速的增加而增加.
- 吸附遵循弗洛伊德利希等热法,表明多层吸附.
结论:
- OLE和FLE是HCl中的铜的有效和可持续的腐蚀抑制剂.
- 在测试条件下,FLE是一种比OLE更强大的抑制剂.
- 植物提取物为工业腐蚀控制提供了一种可行的,环保的方法.
相关概念视频
Extraction: Advanced Methods
1.1K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.1K
Corrosion
28.1K
The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
28.1K
Precipitation and Co-precipitation
4.0K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
4.0K
Standard Electrode Potentials
49.9K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
49.9K
Corrosion of Reinforcement
507
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
507
Electrodeposition
1.3K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
Electrodeposition can...
1.3K


