کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
205232 461101 2016 9 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Physico-chemical properties and fuel characteristics of oxymethylene dialkyl ethers
ترجمه فارسی عنوان
خواص فیزیکی و شیمیایی و ویژگی های سوخت اکسیم اتیلن دی آلکیل اتر
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کلمات کلیدی
اکسید اتیلن اتر، اکسیم اتیلن دی متیل اتر، اکسیم اتیلن دی اتیل اتر، اکسیژنات ها، سوخت دیزلی، تعداد سیمان
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• OMDMEs and OMDEEs were synthesized from DMM/DEM and trioxane.
• OMDME 3, 4, 5 and OMDEE 2, 3, 4 were purified by distillation (purity 99.9+%).
• Their physico-chemical properties were compared to n-alkanes.
• Fuel characteristics of OMDME 3–5 and OMDEE 2–4 were determined.
• OMDME 3–5 and OMDEE 2–4 exhibit very high cetane numbers.

Oligomeric oxymethylene dimethyl ethers (OMDMEs, CH3O–(CH2O)n–CH3) are promising diesel fuel additives, which can reduce soot formation as well as NOx emissions. Due to the poor availability of high purity OMDMEs a comprehensive characterization of diesel standards was not feasible until now. Two types of oxymethylene dialkylethers (OMDMEs and oxymethylene diethyl ethers, OMDEEs) were synthesized, purified and characterized with respect to their physico-chemical and fuel properties. Density, melting point, flash point, auto ignition point as well as lubricity, kinematic viscosity and surface tension of OMDMEs and OMDEEs were measured and compared to the corresponding n-alkanes. Fuel requirements such as boiling points, flash points and surface tensions can be fulfilled by OMDMEs and OMDEEs. Furthermore, OMDMEs (n = 3–5) and OMDEEs (n = 2–4) are, due to their high cetane numbers of 124–180 and 64–103, particularly promising since cetane numbers in this range can lead to improved motor efficiency and smoother fuel combustion. Additionally, the heat of combustion as well as the standard enthalpy of formation and reaction were determined. Apart from somewhat lower heating values, OMDMEs exhibit fuel properties similar to conventional diesel complying the required fuel standards without the need of changing engines or fuel infrastructures.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 173, 1 June 2016, Pages 129–137
نویسندگان
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