Lubrication Properties of Biodiesel:Experimental Investigation and Molecular Dynamics Simulations

摘要：

　　In this work, biodiesels, such as such as ethyl stearate, ethyl oleate, ethyl linoleate, ethyl ricinoleate, were adopted as lubricity additives for low-sulfur diesel fuel, at the concentration range of 0.1~2 wt%.Tribological evaluation obtained from the High-Frequency Reciprocating Rig (HFRR) showed that double bonds or hydroxyl introduced in the carbon chain of the esters could lead to a higher lubrication performance.The lubricity efficiency order was explained by the molecular dynamics (MD) simulations.The lubricity enhancing properties of the esters are mainly determined by the cohesive energy of adsorbed films formed on iron surface.The greater the cohesive energy, the more efficiently it is that the esters enhance the lubricity of low-sulfur diesel fuel.

关键词： Biodiesel Lubricity Molecular dynamics simulation Adsorption

作者: Hui Luo Weiyu Fan Yang Li Guozhi Nan

作者单位: State key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao Shandong,China 266555

会议类型: 国际会议

会议名称: 2013International Conference on Energy Engineering and Environmental Engineering(2013年能源工程与环境工程国际会议)(ICEEEE2013)

会议地点: 杭州

会议语种:英文

页码: 1075-1079

在线出版日期: 2013-01-18（万方平台首次上网日期，不代表论文的发表时间）