Polyoxymethylene dimethyl ethers

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Polyoxymethylene dimethyl ethers
Polyoxymethylene dimethyl ether.svg
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
  • InChI=1S/C5H12O4/c1-6-3-8-5-9-4-7-2/h3-5H2,1-2H3
  • InChI=1S/C6H14O5/c1-7-3-9-5-11-6-10-4-8-2/h3-6H2,1-2H3
  • InChI=1S/C7H16O6/c1-8-3-10-5-12-7-13-6-11-4-9-2/h3-7H2,1-2H3
  • InChI=1S/C8H18O7/c1-9-3-11-5-13-7-15-8-14-6-12-4-10-2/h3-8H2,1-2H3
  • InChI=1S/C9H20O8/c1-10-3-12-5-14-7-16-9-17-8-15-6-13-4-11-2/h3-9H2,1-2H3
  • COCOCOCOC
  • COCOCOCOCOC
  • COCOCOCOCOCOC
  • COCOCOCOCOCOCOC
  • COCOCOCOCOCOCOCOC
Properties
H3CO(CH2O)nCH3
Molar mass Variable
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Polyoxymethylene dimethyl ethers (PODE or DMMn) are a class of chemical compounds with the molecular formula H3CO(CH2O)nCH3 where n is typically about 3 to 8.

PODE can be produced from methylal and formaldehyde or a formaldehyde equivalent such as paraformaldehyde [1] or trioxane. [2]

PODE is used as a diesel fuel additive [3] and as a solvent.

Related Research Articles

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3
CH
2
OH or C
2
H
5
OH (an ethyl group linked to a hydroxyl group), and is often abbreviated as EtOH. Ethanol is a volatile, flammable, colorless liquid with a slight characteristic odor. It is a psychoactive substance, recreational drug, and the active ingredient in alcoholic drinks.

Methanol Simplest alcohol

Methanol, also known as methyl alcohol amongst other names, is a chemical and the simplest alcohol, with the formula CH3OH (a methyl group linked to a hydroxyl group, often abbreviated MeOH). It is a light, volatile, colourless, flammable liquid with a distinctive alcoholic odour similar to that of ethanol (potable alcohol). A polar solvent, methanol acquired the name wood alcohol because it was once produced chiefly by the destructive distillation of wood. Today, methanol is mainly produced industrially by hydrogenation of carbon monoxide.

Tetrahydrofuran Chemical compound

Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH2)4O. The compound is classified as heterocyclic compound, specifically a cyclic ether. It is a colorless, water-miscible organic liquid with low viscosity. It is mainly used as a precursor to polymers. Being polar and having a wide liquid range, THF is a versatile solvent.

Phenol formaldehyde resin Chemical compound

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In chemistry, an oxonium ion is any oxygen cation with three bonds. The simplest oxonium ion is the hydronium ion H3O+.

Dimethyl ether (DME, also known as methoxymethane) is the organic compound with the formula CH3OCH3, simplified to C2H6O. The simplest ether, it is a colorless gas that is a useful precursor to other organic compounds and an aerosol propellant that is currently being demonstrated for use in a variety of fuel applications. It is an isomer of ethanol.

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Diesel exhaust

Diesel exhaust is the gaseous exhaust produced by a diesel type of internal combustion engine, plus any contained particulates. Its composition may vary with the fuel type or rate of consumption, or speed of engine operation, and whether the engine is in an on-road vehicle, farm vehicle, locomotive, marine vessel, or stationary generator or other application.

Gas to liquids

Gas to liquids (GTL) is a refinery process to convert natural gas or other gaseous hydrocarbons into longer-chain hydrocarbons, such as gasoline or diesel fuel. Methane-rich gases are converted into liquid synthetic fuels. Two general strategies exist: (i) direct partial combustion of methane to methanol and (ii) Fischer–Tropsch-like processes that convert carbon monoxide and hydrogen into hydrocarbons. Strategy ii is followed by diverse methods to convert the hydrogen-carbon monoxide mixtures to liquids. Direct partial combustion has been demonstrated in nature but not replicated commercially. Technologies reliant on partial combustion have been commercialized mainly in regions where natural gas is inexpensive.

1,3,5-Trioxane Chemical compound

1,3,5-Trioxane, sometimes also called trioxane or trioxin, is a chemical compound with molecular formula C3H6O3. It is a white solid with a chloroform-like odor. It is a stable cyclic trimer of formaldehyde, and one of the three trioxane isomers; its molecular backbone consists of a six-membered ring with three carbon atoms alternating with three oxygen atoms.

Paraformaldehyde Chemical compound

Paraformaldehyde (PFA) is the smallest polyoxymethylene, the polymerization product of formaldehyde with a typical degree of polymerization of 8–100 units. Paraformaldehyde commonly has a slight odor of formaldehyde due to decomposition. Paraformaldehyde is a poly-acetal.

Boron trichloride is the inorganic compound with the formula BCl3. This colorless gas is a reagent in organic synthesis. It is highly reactive toward water.

Dimethoxymethane Chemical compound

Dimethoxymethane, also called methylal, is a colorless flammable liquid with a low boiling point, low viscosity and excellent dissolving power. It has a chloroform-like odor and a pungent taste. It is the dimethyl acetal of formaldehyde. Dimethoxymethane is soluble in three parts water and miscible with most common organic solvents.

Syringol Chemical compound

Syringol is a naturally occurring aromatic organic compound. It is a dimethyl ether of pyrogallol.

2,6-Lutidine Chemical compound

2,6-Lutidine is a natural heterocyclic aromatic organic compound with the formula (CH3)2C5H3N. It is one of several dimethyl-substituted derivative of pyridine, all of which are referred to as lutidines. It is a colorless liquid with mildly basic properties and a pungent, noxious odor.

Testicular receptor 2

The testicular receptor 2 (TR2) also known as NR2C1 is protein that in humans is encoded by the NR2C1 gene. TR2 is a member of the nuclear receptor family of transcription factors.

SRM Engine Suite

The SRM Engine Suite is an engineering software tool used for simulating fuels, combustion and exhaust gas emissions in internal combustion engine applications. It is used worldwide by leading IC engine development organisations and fuel companies. The software is developed, maintained and supported by CMCL Innovations, Cambridge, U.K.

C1 chemistry

C1 chemistry is the chemistry of one-carbon molecules. Although many compounds and ions contain only one carbon, stable and abundant C-1 feedstocks are the focus of research. Four compounds are of major industrial importance: methane, carbon monoxide, carbon dioxide, and methanol. Technologies that interconvert these species are often consequential.

Methoxymethanol is a chemical compound which is both an ether and an alcohol, a hemiformal. The structural formula can be written as CH3OCH2OH. It has been discovered in space.

Transition metal thioether complex

Transition metal thioether complexes comprise coordination complexes of thioether (R2S) ligands. The inventory is extensive.

References

  1. Arvidson M., Fakley M.E., Spencer M.S. (1987). "Lithium halide-assisted formation of polyoxymethylene dimethyl ethers from dimethoxymethane and formaldehyde". Journal of Molecular Catalysis. 41 (3): 391–393. doi:10.1016/0304-5102(87)80118-9.CS1 maint: multiple names: authors list (link)
  2. Qi Zhao; Hui Wang; Zhang-feng Qin; Zhi-wei Wu; Jian-bing Wu; Wei-bin Fan; Jian-guo Wang (2011). "Synthesis of polyoxymethylene dimethyl ethers from methanol and trioxymethylene with molecular sieves as catalysts". Journal of Fuel Chemistry and Technology. 39 (12): 918–923. doi:10.1016/S1872-5813(12)60003-6.
  3. Pellegrini, L., Marchionna, M., Patrini, R., and Florio, S. (2013). "Emission Performance of Neat and Blended Polyoxymethylene Dimethyl Ethers in an Old Light-Duty Diesel Car". SAE Technical Paper Series. SAE Technical Paper 2013-01-1035. 1. doi:10.4271/2013-01-1035.CS1 maint: multiple names: authors list (link)