Preparation and Evaluation of Lubricity Additives for Low-Sulfur Diesel Fuel

详细信息    查看全文

• 作者：Liming Sun ; Mengmeng Li ; Changfeng Ma ; Ping Li ; Jianzhong Li
• 刊名：Energy & Fuels
• 出版年：2016
• 出版时间：July 21, 2016
• 年：2016
• 卷：30
• 期：7
• 页码：5672-5676
• 全文大小：216K
• 年卷期：0
• ISSN：1520-5029

文摘

This paper adopted the co-precipitation method to prepare Ni/Zr-loaded MgO/Al₂O₃ catalysts for the transesterification. The catalysts were characterized by Brunauer–Emmett–Teller, Fourier transform infrared spectroscopy, thermogravimetry–differential scanning calorimetry, and scanning electron microscopy. The catalyst had a platelet-like structure and an average size of approximately 1–2 μm. The surface area was affected by the calcination temperature, with a sharp decrease in the surface area as the calcination temperature was further increased from 820 to 920 °C. Fatty acid methyl esters (FAMEs) were obtained by a process called transesterification, which reacted waste vegetable oil with methanol under the action of the prepared catalyst. The effect of FAMEs on the lubricating performance of low-sulfur diesel (LSD) was determined using the high-frequency reciprocating rig test. FAMEs were efficient enough to serve as a lubricity additive (LA), and the efficiency increased with an increasing concentration of the additive. The low-temperature flow performance of the additive was characterized by the cloud/pour test. Unsaturated FAMEs were effective in improving low-temperature flow property of LSD. Besides, a better low-temperature performance was presented by adding kerosene to LSD/1% LA compared to adding to LSD in the test.