The present paper describes the use of an easily accessible polymer-grafted sulfonated carbon composite catalyst for the synthesis of α-hydroxy ethers as bio-lubricants from waste vegetable oil via chemical modification involving esterification, epoxidation, and ring-opening reaction. A variety of α-hydroxy ethers were synthesized using different fatty alcohols for the evaluation of physicochemical properties. The bio-lubricants synthesized from 2-ethyl hexanol and dodecanol were found to be most promising as they exhibited lower pour point (< − 27 °C) and higher viscosity index (VI) 97 and 143, respectively. High VI and a lower pour point indicate ROP-3 and ROP-5 to be the most promising candidates as bio-lubricant for various applications.

本文介绍了一种易于获得的聚合物接枝的磺化碳复合催化剂，用于通过化学修饰（包括酯化，环氧化和开环反应）从废植物油中合成α-羟基醚作为生物润滑剂。使用不同的脂肪醇合成了多种α-羟基醚，用于评估其理化性质。发现由2-乙基己醇和十二烷醇合成的生物润滑剂最有前景，因为它们分别表现出较低的倾点（<-27°C）和较高的粘度指数（VI）97和143。高VI和较低的倾点表明ROP-3和ROP-5是最有希望成为各种应用的生物润滑剂的候选产品。