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林产化学与工业 ›› 2022, Vol. 42 ›› Issue (4): 25-32.doi: 10.3969/j.issn.0253-2417.2022.04.004

• 研究报告 • 上一篇    下一篇

活性炭对润滑油中磨损元素吸附性能的研究

徐茹婷(), 赵剑, 孙康, 卢辛成(), 张燕萍, 蒋剑春   

  1. 中国林业科学研究院 林产化学工业研究所;江苏省生物质能源与材料重点实验室;国家林业和草原局林产化学工程重点实验室;林木生物质低碳高效利用国家工程研究中心;江苏省林业资源高效加工利用协同创新中心,江苏 南京 210042
  • 收稿日期:2022-05-09 出版日期:2022-08-28 发布日期:2022-09-01
  • 通讯作者: 卢辛成 E-mail:819275472@qq.com;xinze1983@163.com
  • 作者简介:卢辛成,副研究员,博士,研究领域为生物质热化学转化与生物基炭材料;E-mail:xinze1983@163.com
    徐茹婷(1994—),女,安徽宣城人,助理研究员,硕士,研究方向为炭质吸附材料的制备与应用;E-mail: 819275472@qq.com
  • 基金资助:
    国家重点研发计划资助项目(2019YFD1100604)

The Adsorption Performance of Wear Elements in Lubricant by Activated Carbon

Ruting XU(), Jian ZHAO, Kang SUN, Xincheng LU(), Yanping ZHANG, Jianchun JIANG   

  1. Institute of Chemical Industry of Forest Products, CAF; Key Lab.of Biomass Energy and Material, Jiangsu Province; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
  • Received:2022-05-09 Online:2022-08-28 Published:2022-09-01
  • Contact: Xincheng LU E-mail:819275472@qq.com;xinze1983@163.com

摘要:

以不同活性炭为吸附剂,在对活性炭进行常规指标、比表面积及孔结构、FT-IR、XPS和表面官能团分析的基础上,研究活性炭的孔径分布和表面性质对模拟润滑油中磨损元素吸附效果的影响。研究结果表明:活性炭的中孔孔容和表面羟基、羧基含量是影响吸附效果的关键因素,随着活性炭中孔孔容及表面羟基和羧基含量的增加,其对模拟润滑油中磨损元素的吸附效果不断提升。6种活性炭中,AC4对磨损元素的去除效果最佳,其中孔孔容达0.901 cm3/g,羧基和羟基总量达0.929 2 mmol/g。在吸附温度80 ℃、吸附时间60 min、活性炭添加量5%的最佳吸附工艺下,AC4对模拟润滑油中的Fe、Cu、Pb、Al去除率均大于95%。活性炭对磨损元素的去除效果显著优于木屑、活性白土、硅胶和机油滤芯用滤纸,表明活性炭可作为优良废润滑油再生吸附剂,也可用作高性能机油滤芯材料。

关键词: 润滑油, 磨损元素, 活性炭, 比表面性质, 吸附性能

Abstract:

By using different activated carbons as adsorbents, the effects of pore size distribution and surface properties on the adsorption capacity of activated carbon for lubricant wear elements were studied, which based on the analysis of activated carbon by basic properties, specific surface area and pore structure, FT-IR, XPS and surface functional group analysis. The results showed that the mesopore volume and the contents of carboxyl and hydroxyl groups of activated carbon were the key factors affecting the adsorption capacity. Moreover, the adsorption effect of activated carbon on wear elements in simulated oil continuously increased with the increasing of the mesopore volume and the content of carboxyl and hydroxyl groups. Among the six kinds of activated carbons, AC4 with a mesopore volume of 0.901 cm3/g and a total carboxyl and hydroxyl group contents of 0.929 2 mmol/g, exhibited the best wear elements removal performances. Under the optimal adsorption conditions of temperature 80 ℃, adsorption time 60 min and additive amount of activated carbon 5%, the removal rates of Fe, Cu, Pb and Al in the simulated lubricant by AC4 were more than 95%. The removal effect of wear elements by activated carbon was significantly better than that of sawdust, activated clay, silica gel and filter paper, indicating that activated carbon could be used as an excellent adsorbent for waste lubricating oil regeneration and the high-performance material of oil filter.

Key words: lubricant, wear elements, activated carbon, surface properties, adsorption performance

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