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Author Andersen, Amity ♦ Carter, A.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Hybrid Density Functional Theory Study ♦ Low-temperature Dimethyl Ether Combustion Pathway ♦ Favorable Compression Ignition Property ♦ Reactive Specie ♦ Chain-propagating Step ♦ Conventional Diesel Fuel ♦ Hydrocarbon Autoignition ♦ Initiation Step ♦ Low Temperature ♦ Chain Initiation Step ♦ Ch Och Oo ♦ Ch Och Ooh ♦ Dimethyl Ether ♦ Soot-free Combustion ♦ Hydrogen Abstraction ♦ Radical Chain Mechanism ♦ Subsequent Ch Och Oo Radical ♦ High Cetane Number ♦ Lindemann-type Mechanism ♦ Promising Alternative
Abstract Abstract. Dimethyl ether (DME) has been proposed to be a promising alternative to conventional diesel fuel because of its favorable compression ignition property (high cetane number) and its soot-free combustion. A radical chain mechanism for hydrocarbon autoignition has been proposed for DME at low temperatures. In this mechanism, the chain initiation step consists of DME undergoing hydrogen abstraction by a highly reactive species (typically ⋅OH). The CH O 3 ⋅ CH created in the initiation step 2 then combines with O; the subsequent CH OCH OO ⋅ radical is involved in a 2 3 2 Lindemann-type mechanism, which can lead to the production of formaldehyde (CH = O) and ⋅OH. This concludes the chain-propagating step: the one ⋅OH produced 2 then sustains the chain-reaction by creating another CH O 3 ⋅ CH. A relatively stable 2 intermediate (⋅CH OCH OOH), formed via isomerization of CH OCH OO ⋅ in the
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2002-01-01