Zhuoke Li, Jun Cao, Ting Mao, Dan Ni
Southwest Oil and Gas Field Branch, Research Institute of Natural Gas Technology, Petrochina Ltd, Chengdu, Sichuan, China.
National Energy High Sour Gas Reservoir Exploitation R&D Center, Chengdu, Sichuan, China.
BMC Chem. 2021 Nov 3;15(1):59. doi: 10.1186/s13065-021-00784-9.
A bimannich-based TZBM containing a thiazole ring was obtained by synthesis of mannich bases. TZBM featured a stable structure at 260 °C, and corrosion inhibition effect on carbon steel in a gas-liquid environment with Cl + HS + CO at 180 °C. By analyzing the weight loss of steel exposed to different TZBM concentrations, the coverages of the inhibitor adsorbed on the surfaces were determined, and the results conformed to Langmuir isotherm model. Furthermore, the negative Gibbs free energy indicated that the adsorption was a spontaneous process.
通过曼尼希碱的合成得到了一种含噻唑环的基于双曼尼希的 TZBM。TZBM 在 260°C 具有稳定结构，并且在 180°C 含有 Cl⁻ + HS⁻ + CO₂ 的气液环境中对碳钢有缓蚀作用。通过分析暴露于不同 TZBM 浓度下的钢的重量损失，确定了吸附在表面的抑制剂的覆盖率，结果符合朗缪尔等温线模型。此外，负的吉布斯自由能表明吸附是一个自发过程。
