Corrosion inhibitor of platanus acerifolia leaf extract and application thereof

Abstract

This invention pertains to corrosion inhibition, specifically involving a Platanus acerifolia leaf extract inhibitor. The extract serves to inhibit corrosion of copper in sulfuric acid or steel in hydrochloric acid. In sulfuric acid, inhibition efficiency reaches 96.7%, while in hydrochloric acid, it achieves 93.1% efficiency on Q235 steel. This Platanus acerifolia leaf extract inhibitor exhibits robust corrosion inhibition on copper in sulfuric acid and steel in hydrochloric acid, offering comprehensive anti-corrosion performance suitable for various materials.

What is claimed is: 
     
         1 . A corrosion inhibitor of  Platanus acerifolia  leaf extract, the corrosion inhibitor of  Platanus acerifolia  leaf extract is in powder form;
 the preparation method for the corrosion inhibitor of  Platanus acerifolia  leaf extract is as follows:   cleaning fresh  Platanus acerifolia  leaf with ultrapure water, drying and grinding into powder;   adding the ground leaf powder of  Platanus acerifolia  into an ethanol aqueous solution, heating, stirring, and soaking, filtering to remove the leaf residue, placing into a refrigerator for refrigeration, and then freeze-drying to obtain a corrosion inhibitor of  Platanus acerifolia  leaf extract.   
     
     
         2 . The corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 1 , the drying step is carried out in the oven, the drying temperature is 328˜338K, and the drying time is 36˜48 h. 
     
     
         3 . The corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 1 , the mass fraction of the ethanol aqueous solution used is 30˜40%; the solid-liquid ratio of the powder of  Platanus acerifolia  leaf and the ethanol aqueous solution is (30-50):1000, unit g/mL. 
     
     
         4 . The corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 1 , the temperature of heating and stirring is 333˜343K; the soaking time is 1˜3 h; the refrigeration time is 12˜24 h; the freeze-drying temperature is 53K and the freeze-drying time is 20˜28 h. 
     
     
         5 . An application of a corrosion inhibitor of  Platanus acerifolia  leaf extract, wherein  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for copper or steel in an acid solution. 
     
     
         6 . The application of a corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 5 , the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for copper in sulfuric acid solution, or the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for steel in hydrochloric acid solution. 
     
     
         7 . The application of a corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 6 , when the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for copper in sulfuric acid solution, the  Platanus acerifolia  leaf extract is added into sulfuric acid solution to obtain the inhibition test solution; the concentration of the sulfuric acid solution used is 0.1-1M; in the inhibition test solution, the concentration of  Platanus acerifolia  leaf extract is 100-400 mg/L;
 when the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for copper in sulfuric acid solution, the inhibition efficiency is up to 96.7%.   
     
     
         8 . The application of a corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 6 , when the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for steel in hydrochloric acid solution, the  Platanus acerifolia  leaf extract is added into the hydrochloric acid solution to obtain the inhibition test solution; the concentration of the hydrochloric acid solution used is 0.01-2M; in the inhibition test solution, the concentration of  Platanus acerifolia  leaf extract is 50-400 mg/L. 
     
     
         9 . The application of a corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 8 , the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for Q235, X60, X70, and N80 carbon steel in hydrochloric acid solution. 
     
     
         10 . The application of a corrosion inhibitor of  Platanus acerifolia  leaf extract according to  claim 9 , when the  Platanus acerifolia  leaf extract is used as a corrosion inhibitor for Q235 steel in hydrochloric acid solution, the inhibition efficiency is up to 93.1%.