A new method to estimate the partition of corrosion inhibitors

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-02-19 DOI:10.1515/corrrev-2023-0040

Kenia A. Hernández Zarate, Jesús I. Guzmán Castañeda, Liliana J. Cosmes López, José M. Hallen-López, Roman Cabrera-Sierra

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Abstract

The partitioning coefficient of the R12Na corrosion inhibitor is determined by relating its concentration in the water phase (C W) to the expected theoretical concentration (C i,T) due to a re-concentration phenomenon after the mixing stage. Partition experiments were performed by varying the water cut in brine-kerosene mixtures, temperature, and the inhibitor concentration using NACE 1D182 brine as a water phase and ultraviolet-visible spectrophotometry. The partition results varied from 37.81 to 43.75 %, 36.68 to 61.23 %, and 40.29 to 56.47 % at 40 °C, 60 °C, and 80 °C, respectively, indicating that R12Na is a water soluble inhibitor and dispersible in the organic phase. Likewise, the partition results varied from 41.69 to 44.04 % in the presence of 20, 50, and 100 mg L−1 of the inhibitor, using a ratio of 80–20 vol% WP–OP and 60 °C. Furthermore, making the same considerations, the partition of different corrosion inhibitors reported in the literature was evaluated, supporting its determination, the latter is of great importance for dosing corrosion inhibitors in the oilfield industry.

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估算缓蚀剂分区的新方法

R12Na 缓蚀剂的分配系数是通过将其在水相中的浓度（C W）与预期理论浓度（C i,T）相联系来确定的，后者是由于混合阶段后的再浓缩现象造成的。使用 NACE 1D182 盐水作为水相和紫外可见分光光度法，通过改变盐水-煤油混合物中的水分含量、温度和抑制剂浓度，进行了分区实验。在 40 ℃、60 ℃ 和 80 ℃ 时，分配结果分别为 37.81 % 至 43.75 %、36.68 % 至 61.23 % 和 40.29 % 至 56.47 %，表明 R12Na 是一种水溶性抑制剂，可分散在有机相中。同样，在 20、50 和 100 mg L-1 的抑制剂存在下，使用 80-20 vol% WP-OP 和 60 °C 的比例，分配结果从 41.69 % 到 44.04 % 不等。此外，出于同样的考虑，还对文献中报道的不同缓蚀剂的分配情况进行了评估，并支持对其进行测定，后者对于油田工业中缓蚀剂的配料具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464

期刊介绍： ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.