Green Car Congress: World Bank Supports Chinese
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Green Car Congress: World Bank Supports Chinese Coal to Dimethyl Ether Project |
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IFC is investing in a Xinao subsidiary—Xinneng Chemical—by buying shares worth up to $10 million and granting a $40 million loan for the plant that will convert coal into dimethyl ether (DME). |
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Japan’s Toyo Engineering, for example, is designing and building a 210,000 tps coal-to-dimethyl ether (DME) with the Ningxia Coal Group in northwestern China’s Ningxia Hui Autonomous Region. |
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Coal to liquids are just another nail in the coffin in which the planet is being buried. |
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www.greencarcongress.com /2006/08/world_bank_supp.html (742 words) |
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Ether - Wikipedia, the free encyclopedia |
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Ether is the general name for a class of chemical compounds which contain an ether group — an oxygen atom connected to two (substituted) alkyl groups. |
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Ethers are not to be confused with the following classes of compounds with the same general structure R-O-R. Aromatic compounds like furan where the oxygen is part of the aromatic system. |
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In a primary ether this carbon is connected to only one other carbon as in diethyl ether CH An example of a secondary ether is diisopropyl ether (CH and that of a tertiary ether is di-tert-butyl ether (CH Dimethyl ether , a primary, a secondary, and a tertiary ether . |
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en.wikipedia.org /wiki/Ether (764 words) |
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ChemViz Isomers Lab (Site not responding. Last check: 2007-11-06) |
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The boiling point of dimethyl ether is -24.9 °C and for ethanol is 78.5 °C at atmospheric pressure. |
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Hence, dimethyl ether is a gas and ethanol is a liquid at room temperature and pressure. |
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Compute the change in total energy of dimethyl ether when one of its hydrogen atoms is removed (CH In Nanocad, delete a H atom from dimethyl ether to create this molecule. |
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chemviz.ncsa.uiuc.edu /content/lab-s-isomers.html (1175 words) |
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[No title] |
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Glycol ethers are federal hazardous air pollutants and were identified as toxic air contaminants in April 1993 under AB 2728. |
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The physical properties and characteristics of glycol ethers are described in Tables I and II (Howard, 1990; Merck, 1989; Sax, 1989; U.S. EPA, 1994a). |
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Glycol ethers also contributed to the total hazard index in 18 of the approximately 107 risk assessments reporting a total acute hazard index greater than 1, and presented an individual hazard index greater than 1 in 9 of these risk assessments (OEHHA, 1996b). |
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www.scorecard.org /chemical-profiles/html/glycol_ethers.html (1391 words) |
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Dimethyl ether Degradation Pathway (Site not responding. Last check: 2007-11-06) |
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Dimethyl ether , also known as methyl ether or wood ether , is a colorless gas that has been used in refrigeration applications. |
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Dimethyl ether has also been shown to be oxidized by methanotrophic bacteria but it does not serve as a growth substrate for those bacteria (Meyers AJ Jr., 1982). |
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The following is a text-format Dimethyl ether pathway map. |
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umbbd.msi.umn.edu /dme/dme_map.html (167 words) |
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Dimethyl ether: laboratory assignments and predictions through 600 GHz. |
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Dimethyl ether : laboratory assignments and predictions through 600 GHz. |
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Dimethyl ether (CH_3_OCH_3_) is a well-known interstellar molecule with a large abundance in hot core regions. |
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The lines arising from the ground vibrational state have been combined with previous data, mainly at lower frequencies, to form a global data set consisting of over 1600 lines that have been assigned and fitted by an effective Hamiltonian method. |
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www.cs.wisc.edu /niagara/data/nasa/ApJ_500_1059.xml (245 words) |
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NTP: Abstract for Teratology: Diethylene glycol dimethyl ether |
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Diethylene glycol dimethyl ether (DYME), a widely used organic solvent, is structurally related to several compounds which produce reproductive and developmental toxicity, including teratogenicity in laboratory animals. |
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In conclusion, exposure of NZW rabbits to diethylene glycol dimethyl ether at 25 mg/kg/day during major organogenesis produced no adverse maternal or developmental effects. |
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Doses of 50 and 100 mg/kg/day were associated with adverse developmental effects, but did not produce distinctive evidence of maternal toxicity. |
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ntp-server.niehs.nih.gov /ntpweb/index.cfm?objectid=073024FB-D1D4-3798-75B2D2BA2B125A46 (491 words) |
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International Journal of Chemical Reactor Engineering |
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Dimethyl ether (DME) is regarded as an environmentally benign fuel for vehicles. |
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Two kinds of reactor technologies for DME synthesis have been proposed by previous researchers: the fixed-bed and the slurry reactor. |
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The optimal H2/CO ratio is between 1.0-1.5, and increasing the pressure is shown to improve the reactor performance. |
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www.bepress.com /ijcre/vol1/S2 (377 words) |
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Diethylene Glycol Dimethyl Ether (CICADS 41, 2002) |
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Diglyme is manufactured in a closed system by the catalytic conversion of dimethyl ether and ethylene oxide under elevated pressure (1000–1500 kPa) and temperatures (50–60 °C) with a maximum yield of 60%. |
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Hardin BD (1983) Reproductive toxicity of the glycol ethers . |
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Hardin BD, Eisenmann CJ (1986) Relative potency of four ethylene glycol ethers for induction of paw malformations in the mouse. |
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www.inchem.org /documents/cicads/cicads/cicad41.htm (14645 words) |
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L6. OXIDATION CHEMISTRY OF DIMETHYL ETHER RELATED TO ITS PROPERTIES AS A DIESEL FUEL |
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Recently, there has been substantial interest in the use of dimethyl ether (DME) as a potential diesel fuel in compression-ignition engines. |
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This interest arises primarily because dimethyl ether has a very high cetane number (>55) and inherently low exhaust particulate emissions. |
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methyl tertiary butyl ether (MTBE) and tert-amyl methyl ether (TAME)] are used as octane enhancers in gasoline . |
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www.cstl.nist.gov /div838/kinet_conf/agenda/l_session/l6.html (452 words) |
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High-Pressure Vapor-Liquid Equilibrium for Dimethyl Ether + Ethanol and Dimethyl Ether + Ethanol + Water (Site not responding. Last check: 2007-11-06) |
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High-Pressure Vapor-Liquid Equilibrium for Dimethyl Ether + Ethanol and Dimethyl Ether + Ethanol + Water |
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The first part of this paper is a review of experimental methods and the high-pressure phase behavior of dimethyl ether systems for which data have been published between 1932 and 1999. |
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The second part of this paper is high-pressure vapor-liquid equilibrium (VLE) data for the systems dimethyl ether (DME) + ethanol at (332.95, 353.25, and 373.15) K and dimethyl ether + ethanol + water at (333.55, 353.55, and 373.65) K. The experimental data are correlated using the Elliott-Suresh-Donohue (ESD-EOS) and Peng Robinson (PR-EOS) equations of state. |
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pubs.acs.org /cgi-bin/abstract.cgi/jceaax/2000/45/i06/abs/je000109m.html (162 words) |
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Dimethyl ether - BioenergyWiki |
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You can help us by editing this page: add information, links, images or any other changes you want! |
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Dimethyl ether (CH), also known as methoxymethane, oxybismethane, methyl ether , wood ether or DME. |
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It can be used as a substitute for liquified petroleum gas, liquified natural gas, diesel and gasoline . |
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www.bioenergywiki.net /index.php/Dimethyl_ether (152 words) |
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Undergraduate research students |
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The Structure of the Dimethyl Ether-CO van der Waals Complex from Microwave Spectroscopy, J.J. Newby, R.A. Peebles, S.A. Peebles, J. |
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Tunneling Motions and the Barrier to Inversion in the Dimethyl Ether—CS van der Waals Dimer, S.A. Peebles, R.A. Peebles, J.J. Newby and M.M. Serafin, Chem. |
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Michal Serafin (Fall 2004, Spring 2005, Fall 2005, Spring 2006) - is currently working on ab initio calculations of dimethyl sulfide (DMS) systems (his results on DMS-CO formed the subject of the poster that he presented at the Third Annual Undergraduate Research Celebration in the Department of Chemistry on November 1st 2004). |
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www.ux1.eiu.edu /~cfsap/Undergrads.htm (885 words) |
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Influence of Protonation on Internal Rotation of Dimethyl Ether (Site not responding. Last check: 2007-11-06) |
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Influence of Protonation on Internal Rotation of Dimethyl Ether |
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A model is proposed for the influence of protonation on ether potential surfaces. |
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The model invokes the quantum-mechanical effect of protonation on the oxygen lone pair and its consequence on the internal rotation barriers and associated torsional rotation energy levels. |
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pubs.acs.org /cgi-bin/abstract.cgi/jpcafh/2000/104/i14/abs/jp994359p.html (162 words) |
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(OAIC) DIMETHYL ETHER AN ALTERNATIVE PROPELLANTS FOR AEROSOL H... (Site not responding. Last check: 2007-11-06) |
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A detailed analysis, complete with charts and graphs, showing the properties of dimethyl ether (DME) as a propellant for aerosol hairspray, and a comparison of DME with other hydrocarbon (HC) propellants in hairspray applications. |
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The author's focus of what they refer to as the ability to use DME in conjunction with polar hairspray polymers, i.e. |
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ODS, core, aerosol sector, dymethyl ether , hydrocarbons, propane , alternative technologies - aerosol, butane, iso-butane, ethanol , resins, solvents, propellants, formulations, stability, chemical properties, DME, HCs, hair sprays, cloud point, polar, nonpolar, polymers, Aerosol Age, United States, journal articles, Bartlett, Nowak, Daly, National Starch & Chemical, DuPont, 1985. |
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es.epa.gov /p2pubs/oaic/952.html (190 words) |
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Alternative Fuels and Refurmulated Fuels |
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A Comparison of CO and NO Emissions from Propane , n-Butane, and Dimethyl Ether Premixed Flames. |
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Objective: To determine a methodology for operating a production turbodiesel engine on dimethyl ether and demonstrate the performance, emissions and durability of the conversion approach in a Faculty/Staff shuttle bus on the University Park campus of the Pennsylvania State University. |
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Emission Characteristics of a Navistar 7.3L Turbodiesel Fueled with Blends of Dimethyl Ether and Diesel Fuel. |
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www.ems.psu.edu /~boehman/altfuels.html (1749 words) |
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M3. Dimethyl-ether Radical + O2 and the Respective Adduct Radical + O2 Reactions (Site not responding. Last check: 2007-11-06) |
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to form a peroxy adduct, which has a relatively low energy barrier to H atom transfer (isomerization) to form a methyl radical (adjacent to an ether group) hydroperoxide. |
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Further reaction, beta scission, of this radical to CH also has a barrier which is below the enthalpy of dimethyl ether radical + O |
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The stabilized isomer resulting from a hydrogen shift to the peroxy radical in the dimethyl ether + O |
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www.cstl.nist.gov /nist838/kinet_conf/agenda/m_session/m3/m3.html (311 words) |
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[No title] |
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Airgas - Dimethyl Ether CP Size 200 Customer owned CGA 510 |
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Dimethyl Ether is a colorless, highly flammable gas with a slight ether-like odor . |
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Dimethyl Ether CP Size 200 Customer owned CGA 510 |
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www.airgas.com /browse/product.aspx?Msg=RecID&recIds=341445 (136 words) |
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(OAIC) USE OF DIMETHYL ETHER FOR REDUCTION OF VOC CONTENT (Site not responding. Last check: 2007-11-06) |
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USE OF DIMETHYL ETHER FOR REDUCTION OF VOC CONTENT |
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Dimethyl ether , DME, can be an invaluable tool for reducing volatile organic compound (VOC) content in aerosol products ranging from fragrances to industrial products and paints. |
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While DME is a VOC, it has a short atmospheric lifetime of under one month, and can be used in a product to replace more serious VOCs, with DME as a solvent or as a co-solvent to water . |
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es.epa.gov /p2pubs/oaic/986.html (245 words) |
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IngentaConnect Liquid phase methanol and dimethyl ether synthesis from syngas (Site not responding. Last check: 2007-11-06) |
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Liquid phase methanol and dimethyl ether synthesis from syngas |
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By varying the mass ratios of methanol synthesis catalyst to methanol dehydration catalyst, it is possible to co-produce DME and methanol in any fixed proportion, from 5% DME to 95% DMEAlso, dual catalysts exhibit higher activity, and more importantly these activities are sustained for a longer catalyst on-stream life by alleviating catalyst deactivation. |
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Keywords: dimethyl ether (DME); methanol ; alcohol; diesel fuel; LPG; fuel cell; olefins; aerosol; syngas; natural gas; coal ; biomass ; methanol ; oxygenates; ethers; kinetics; thermodynamics; slurry; liquid phase ; catalyst deactivation |
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www.ingentaconnect.com /content/klu/toca/2005/00000032/F0020003/00002891 (209 words) |
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dimethyl ether concept from the Astronomy knowledge base (Site not responding. Last check: 2007-11-06) |
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dimethyl ether concept from the Astronomy knowledge base |
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physical object > natural object > particle > molecule > interstellar molecule > dimethyl ether |
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Next interstellar molecule: ethyl alcohol Up: interstellar molecule Previous interstellar molecule: cyanogen radical |
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www.site.uottawa.ca:4321 /astronomy/dimethylether.html (58 words) |
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Supplier and Producer of Monoglyme, Diglyme, Triglyme, Tetraglyme, Butyl Diglyme, Proglyme (Dipropylene glycol dimethyl ... |
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Glymes are end capped polyethylene glycols or polypropylene glycols, e.g polyglycol dimethyl ethers . |
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Polyethylene glycol dimethyl ethers (MW 200, 250, 500, 1000, 2000), Polyglyme |
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Informations about polyethylene glycol dimethyl ethers as Absorption Liquids to remove compounds like H |
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www.glymes.com (429 words) |
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Alternative Fuel Technologies Inc (AFTC) Stock Research Links
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