Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi'an Shiyou University, Xi'an 710065, China.
Xi'an Changqing Chemical Group Co., Ltd., Xi'an 710018, China.
Molecules. 2023 Apr 21;28(8):3640. doi: 10.3390/molecules28083640.
Four products were obtained from sodium dodecylbenzene sulfonate (SDBS) and formaldehyde (40% solution) using a simple reaction. The products were characterized by TGA, IR, UV and MS to confirm the major chemicals in each sample. The new products could reduce the interfacial tension between oil and water in the experimental temperature range further compared to SDBS. The emulsion ability was also enhanced by SDBS-1 to SDBS-4. The oil-displacement efficiencies of SDBS-1 to SDBS-4 were obviously higher than that of SDBS, and the oil-displacement efficiency of SDBS-2 was the best, with an efficiency of 25%. The experimental results all indicate that these products have an excellent ability to reduce oil-water interfacial tension and that they can be used in the oil and petrochemical industry for oil production and have certain practical uses.
四种产品是由十二烷基苯磺酸钠（SDBS）和甲醛（40%溶液）通过简单反应得到的。通过 TGA、IR、UV 和 MS 对产物进行了表征，以确认每个样品中的主要化学物质。与 SDBS 相比，新产品在实验温度范围内进一步降低了油水界面张力。SDBS-1 到 SDBS-4 也增强了乳液能力。SDBS-1 到 SDBS-4 的驱油效率明显高于 SDBS，SDBS-2 的驱油效率最好，为 25%。实验结果均表明，这些产品具有优异的降低油水界面张力的能力，可用于石油和石化行业的采油，具有一定的实用价值。
