Catalytic Synthesis of Trihydroxymethylpropyl Trioleate Using Activated Carbon-supported p-Toluenesulfonic Acid  

作　　者：Li Xingyang Xie Ying 

机构地区：[1]School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510630,China [2]Guangdong University of Petrochemical Technology,Maoming 525011,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2024年第4期130-140,共11页中国炼油与石油化工(英文版)

摘　　要：By evaluating the SEM images,specific surface area,and the catalytic synthesis reaction conditions of an activated carbon-supported p-toluenesulfonic acid catalyst,and comparing the physical and chemical properties,infrared spectra,nuclear magnetic resonance spectra,oxidation stability,thermal stability,hydrolytic stability,and extreme pressure anti-wear performance of the synthesized trihydroxymethylpropyl trioleate with imported reference esters,the feasibility of its application as a substitute was investigated.The results indicated that the activated carbon-supported p-toluenesulfonic acid catalyst exhibited loose porosity,high specific surface area,and high esterification efficiency.When synthesized under optimal conditions,the yield rate of trihydroxymethylpropyl trioleate reached 99.3%,with a simple separation process that did not require additional steps such as neutralization and washing and generated minimal wastewater.The physical and chemical properties of the synthesized trihydroxymethylpropyl trioleate were comparable to those of the reference ester in terms of color,viscosity,viscosity index,flash point,and pour point.Moreover,the peak position and peak height in the infrared and nuclear magnetic carbon spectra were essentially the same.Through comprehensive evaluations and comparisons of various properties,it was determined that the performance of trihydroxymethylpropyl trioleate was comparable to that of the imported reference esters.

关 键 词：activated carbon-supported p-toluenesulfonic acid TRIMETHYLOLPROPANE caprylic-capric acid blend polyol esters thermal oxidative stability thermal stability 

分 类 号：TQ426[化学工程] TQ225.24