1. Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil.
- Author
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Qiang Lu, Zhi-Bo Zhang, Hang-Tao Liao, Xiao-Chu Yang, and Chang-Qing Dong
- Subjects
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EMULSIONS , *DIESEL fuels , *BIOMASS , *SCANNING electron microscopes , *X-ray photoelectron spectroscopy , *LUBRICATION & lubricants - Abstract
Bio-oil from fast pyrolysis of biomass is a low-grade liquid fuel, which can be upgraded through the emulsification with diesel oil. In this study, we prepared two rice husk bio-oil samples with different solid char contents and three bio-oil/diesel-oil emulsion samples with the bio-oil content of 10 wt%, 30 wt% and 50 wt%, respectively. The lubrication properties of these oil samples were evaluated by a four-ball tester. The morphologies of the worn ball surface were observed by scanning electron microscope (SEM). The chemical states of the elements on the worn surface and non-worn surface were analyzed by X-ray photoelectron spectroscope (XPS). The results showed that the bio-oil possessed better extreme-pressure, anti-wear and friction-reducing properties than the commercial diesel oil (number zero). The solid char particles in the bio-oil could improve its lubrication performance. Moreover, the lubrication ability of the emulsions would be enhanced with the increasing of the bio-oil content in the emulsions. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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