Add time:08/31/2019         Source:sciencedirect.com

A novel quaternary ammonium (BQD) with good inhibitive performance is separated from the synthesis of N-Benzylquinolinium Chloride (BQC). The formula of BQD was C32H23N2Cl and its structure is characterized by NMR, LC-HRMS, FT-IR. The formation mechanism of BQD is proposed. The corrosive inhibition of BQD is investigated in 15% HCl. The corrosion rate is 1.98 g m−2 h−1 when the concentration of BQD is 0.744 mmol L−1. The adsorption of BQD on the steel obeyed Langmuir adsorption isotherm. The standard free energy of adsorption of BQD is −54.48 kJ mol−1, indicating a strong chemisorption of BQD onto the steel.

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