期刊
FUEL PROCESSING TECHNOLOGY
卷 222, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2021.106980
关键词
Methanol; Diesel; Solubility parameter; Molecular structure; Intermolecular force
资金
- National Natural Science Foundation of China [51906043]
- Jiangsu Natural Science Foundation [BK20190363]
- State Key Laboratory of Engines, Tianjin University
- Zhishan Scholar of Southeast University
This study investigates the performance and mechanism of different oxygen-containing chemicals as co-solvents to prepare methanol/diesel blends, and proposes reference parameters for choosing suitable co-solvents. 1-Octanol shows excellent performance as a co-solvent in preparing stable methanol/diesel blends.
Oxygen-containing fuels or additives used to reduce the pollutant emissions from diesel combustion have the potential as a co-solvent to prepare methanol/diesel blends, however their performance has less been evaluated, especially how their molecular structure affects the solubility of methanol in diesel. In this work, the abilities of higher alcohols, long-chain ethers and esters to improve the solubility of methanol in diesel were investigated, and intermolecular forces were also analyzed according to the solubility parameters. Results show that different performance for oxygen-containing chemicals as a co-solvent to prepare methanol/diesel blends originates from different contribution of various functional groups to their Hansen solubility parameters (HSPs) and the fraction of HSPs. And dispersion solubility parameter larger than 15.9 and its fraction in the range of 0.45-0.64 were proposed as a reference for choosing a suitable co-solvent to prepare methanol/diesel blends. Besides, it was found that 1-Octanol exhibits excellent performance as a co-solvent to prepare stable methanol/diesel blends, and can substantially reduce the PODE or methyl palmitate usage when they being used in preparing methanol/diesel mixtures.
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