SnO nanoparticles on graphene oxide as an effective catalyst for synthesis of lubricating ester oils
Huaigang Su, Qin Zhao, Yanan Wang, Qilong Zhao, Cheng Jang, Yongfang Niu, Wenjing Lou, Yanxing Qi
Abstract
In this paper, nanosized SnO was deposited on graphene oxide (GO) by adopting hydrothermal technique to fabricate a new composite material [email protected], which was characterized by TEM, BET, XPS, XRD and FE-SEM. The [email protected] composite exhibits excellent catalytic performance for esterifying fatty acids and trimethylolpropane at stoichiometric ratio. The yield of resulting polyol esters could reach 99%. Additionally, the [email protected] composition can be recycled for 6 cycles without obvious deactivation. The outstanding catalytic performance was attributed by the active Lewis acid of SnO and the increase of specific surface area with the loading of SnO onto GO.