期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 217, 期 -, 页码 407-420出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2017.06.007
关键词
Polyoxymethylene dimethyl ethers; OME; POME; Synthetic biofuel; Oxygenated fuel
资金
- Commission for Technology and Innovation CTI through the SCCER BIOSWEET
Polyoxymethylene dimethyl ethers (OME) containing 3-5 CH2O units (OME3-5) are appealing oxygenated fuels, which can be used in diesel engines with only slight fuel system modifications. Their combustion leads to reduced hazardous exhaust gas emissions compared to standard diesel. Due to the absence of C-to-C bonds, they considerably reduce soot formation, allowing in turn significantly higher exhaust gas recirculation (EGR) rates to reduce NO. emissions. Established liquid-phase OME production processes involve trioxane as a costly intermediate. Moreover, the OME product equilibrium composition follows a Schulz-Flory distribution making selective synthesis of specific chain length cumbersome. Current research efforts focus on simplifying the existing processes by using fewer steps, simpler reactants and less energy. Several catalyst classes were reported to catalyze OME acid synthesis. Little is known about the reaction mechanisms and the elementary steps involved. This review highlights the need for more systematic research on new reactants, efficient catalysts and simpler processes. (C) 2017 Elsevier B.V. All rights reserved.
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