Li, Yong published the artcileThree piperazine compounds as corrosion inhibitors for copper in 0.5 M sulfuric acid medium, SDS of cas: 119-80-2, the publication is Journal of the Taiwan Institute of Chemical Engineers (2021), 231-243, database is CAplus.
Searching for and developing green corrosion-resisting drugs plays an significant role in protecting Cu during its pickling treatment. The toxicities and inhibitive performances are closely correlated with their mol. formulas. Therefore, Amoxapine, Loxapine and Clozapine, all of which belong to piperazines, were assessed as inhibitive agents to protect Cu from corrosion in 0.5 M H2SO4 via electrochem. measurements, surface morphologies and theor. calculations According to the electrochem. results, the anti-corrosion efficiencies of AP, LP and CP reached their maximum at 5 mM, namely 94.0, 95.2 and 96.6, resp. They were all proved to be cathodic-type corrosion inhibitors. The morphol. anal. implied the shaping of protective films on Cu surfaces. Moreover, the absorption of AP, LP and CP on Cu surfaces deferred to the Langmuir isotherm model, confirming the anal. of Fourier transform IR spectroscopy (FT-IR) and XPS. Theor. calculations revealed their adsorption models and anti-corrosive mechanisms. Both experiment and calculation manifested favorable corrosion-proof properties of the three researched drugs. Further anal. also proved the enhanced inhibitive effect of Me that connected with benzene ring owing to its conjugative effect. Furthermore, N atom possessed higher electronegativity and accordingly stronger electron-donating ability compared to O atom. The corrosion-resisting efficiency of Clozapine was 96.6%, being higher than that of Loxapine which was 95.2%.
Journal of the Taiwan Institute of Chemical Engineers published new progress about 119-80-2. 119-80-2 belongs to catalysis-chemistry, auxiliary class sulfides,Carboxylic acid,Benzene, name is 2,2′-Dithiodibenzoic acid, and the molecular formula is C14H10O4S2, SDS of cas: 119-80-2.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia