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Topic: Alkane


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In the News (Sun 19 Nov 17)

  
  Alkane - Biocrawler   (Site not responding. Last check: 2007-09-18)
An alkane in organic chemistry is a saturated hydrocarbon without cycles, that is, an acyclic hydrocarbon in which the molecule has the maximum possible number of hydrogen atoms and so has no double bonds.
Alkanes are also often known as paraffins, or collectively as the paraffin series; these terms, however, are also used to apply only to alkanes whose carbon atoms form a single, unbranched chain; when this is done, branched-chain alkanes are called isoparaffins.
Alkanes have a low reactivity because the C-H and C-C single bonds are relatively stable, difficult to break and non-polar.
www.biocrawler.com /encyclopedia/Alkane   (1059 words)

  
 Alkane
The first alkane, methane, is one carbon with four hydrogen, each hydrogen taking up one bond on the carbon atom; the second, ethane, is two carbons single-bonded surrounded by six hydrogen taking up the other bonds.
For alkanes with 1-12 carbon atoms, the number of isomers for each is 1, 1, 1, 2, 3, 5, 9, 18, 35, 75, 159, and 355, respectively.
Alkanes occur naturally on Earth and throughout the solar system, including in comets and in meteorites.
www.iscid.org /encyclopedia/Alkane   (228 words)

  
 Alkane   (Site not responding. Last check: 2007-09-18)
The atoms in alkanes with more than carbon atoms can be arranged in multiple forming different isomers.
The alkanes and their derivatives with or fewer carbons have non- systematic common names established by long precedence.
Alkanes have a low reactivity because C-H and C-C single bonds are relatively and difficult to break.
www.freeglossary.com /Alkane   (602 words)

  
 alkane - HighBeam Encyclopedia
ALKANE [alkane], any of a group of aliphatic hydrocarbons whose molecules contain only single bonds (see chemical bond).
An alkane is said to have a continuous chain if each carbon atom in its molecule is joined to at most two other carbon atoms; it is said to have a branched chain if any of its carbon atoms is joined to more than two other carbon atoms.
The alkanes are sometimes referred to as the methane series (after the simplest alkane) or as paraffins.
www.encyclopedia.com /doc/1E1-alkane.html   (264 words)

  
 Alkane • Harnessing Renewable Energy (via CobWeb/3.1 planetlab2.cs.umd.edu)   (Site not responding. Last check: 2007-09-18)
Alkane Energy is an international renewable energy company that designs, builds, operates and services methane treatment and generation plants.
Alkane Energy is an international renewable energy business that captures mmore...
Alkane is an international renewable energy company specialising in the desmore...
www.alkane.co.uk.cob-web.org:8888   (110 words)

  
 Alkane Biogas - part of the Alkane Energy plc group
Alkane Biogas is part of the Alkane Energy plc group, which specialises in methane gas capture and utilisation for electricity and heat generation.
Alkane Biogas offers a full service for the development of new projects to potential clients with all participants having the option to hold an equity stake in the new business.
Alkane’s management philosophy is that an important element is to develop and operate plants within local partnerships of waste producers and energy users.
www.alkanebiogas.co.uk   (719 words)

  
 Alkane - Search Results - ninemsn Encarta
Alkane, member of a family (homologous series) of hydrocarbons (substances containing hydrogen and carbon only) with the general formula C
The saturated open-chain hydrocarbons form a homologous series called the alkane, or paraffin, series.
The simplest alkane is methane, CH The next members of the family are ethane (C
au.encarta.msn.com /Alkane.html   (121 words)

  
 Alkane Functional Group | World of Chemistry
The alkanes are the hydrocarbons where all of the carbons are bonded to the other carbon atoms by single bonds.
In discussing the alkanes as a functional group, the terms aliphatic (for the acyclic alkane substituent) and alicyclic (for the cyclic alkane substituent) are used.
Alkanes are produced by the reduction of alkenes, where hydrogen adds across to form a saturated double bond, or by reacting alkyl iodides with sodium in a solution of ether (known as the Wurtz reaction).
www.bookrags.com /research/alkane-functional-group-woc   (735 words)

  
 Alkanes
Alkanes with higher values of n are found in diesel fuel, fuel oil, petroleum jelly, paraffin wax, motor oils, and for the highest values of n, asphalt.
Alkane derivatives are used in hundreds of products such as plastics, paints, drugs, cosmetics, detergents, insedticides, etc., so the fossil fuel resource from which we obtain the alkanes is much too valuable to burn it all as a motor fuel.
Alkane derivatives can be formed by substituting an alkyl group for one of the hydrogens.
hyperphysics.phy-astr.gsu.edu /hbase/organic/alkane.html   (544 words)

  
 Alkanes
Alkanes are one of the hydrocarbon families that have only sp3 carbons.
A normal hydrocarbon alkane is one where all the carbon atoms in the molecule are in a "continuous" chain.
Alkanes are insoluble in water because the polar water molecules are not attracted to the non-polar alkane molecules.
members.aol.com /logan20/alkanes.html   (1192 words)

  
 Room Temperature Alkane Activation Reaction Measured
Alkanes are compounds of carbon and hydrogen atoms held together by single bonds.
The problem has been that the bonds between an alkane's carbon and hydrogen atoms are strong enough to render alkanes generally unreactive.
This enabled the researchers to irradiate alkanes and the organometallic complexes with ultraviolet light and measure the kinetics at room temperature with the compounds dissolved in a hydrocarbon solvent.
www.lbl.gov /Science-Articles/Archive/alkane-activation.html   (649 words)

  
 Alkanes   (Site not responding. Last check: 2007-09-18)
The alkanes are said to be saturated because the maximum number of bonds are formed between each carbon atoms and its neighboring carbon and hydrogen atoms.
The shapes of the alkanes shows that all bonds on the carbon atoms are identical and that the bond angles are close to 109 degrees.
The alkane with the simplest structure is methane, CH4.
www.ucc.ie /ucc/depts/chem/dolchem/html/dict/alkanes.html   (757 words)

  
 Alkane (via CobWeb/3.1 planetlab2.cs.umd.edu)   (Site not responding. Last check: 2007-09-18)
The series of alkanes is often called the paraffin series.
The number of isomers increases rapidly with the number of carbon atoms; for acyclic alkanes with n = 1..12 carbon atoms, the number of isomers equals 1, 1, 1, 2, 3, 5, 9, 18, 35, 75, 159, 355.
The prefix depends on the number of carbon atoms in the molecule and on any branched chains that may be attached.
alkane.iqnaut.net.cob-web.org:8888   (723 words)

  
 Alkane Reactivity
The alkanes and cycloalkanes, with the exception of cyclopropane, are probably the least chemically reactive class of organic compounds.
Unlike the complex transformations of combustion, the halogenation of an alkane appears to be a simple substitution reaction in which a C-H bond is broken and a new C-X bond is formed.
Bromination of alkanes occurs by a similar mechanism, but is slower and more selective because a bromine atom is a less reactive hydrogen abstraction agent than a chlorine atom, as reflected by the higher bond energy of H-Cl than H-Br.
www.cem.msu.edu /~reusch/VirtualText/funcrx1.htm   (1653 words)

  
 The Alkane Hydroxylase Gene of Burkholderia cepacia RR10 Is under Catabolite Repression Control -- Marín et al. ...
Alkanes are major components of crude oil and are also present in many organisms, such as green plants (43, 54).
alkane degradation pathway is that encoded by the OCT plasmid
The genes rubA and rubB for alkane degradation in Acinetobacter sp.
jb.asm.org /cgi/content/full/183/14/4202   (5154 words)

  
 Scientists closer to harnessing potential of alkane hydrocarbons
Chemists have long coveted the use of alkanes as feedstock for clean-burning fuels and a host of petrochemicals, including plastics, solvents, synthetic fibers, and pharmaceutical drugs.
The problem has been that the bonds between an alkane's carbon and hydrogen atoms are so strong as to render alkanes generally unreactive.
This "naked" or unsolvated 16-electron complex was finally detected and the rates of its reaction with alkanes were measured when the researcher carried out time-resolved infra red experiments in the gas phase.
www.lbl.gov /Science-Articles/Archive/alkanes.html   (764 words)

  
 Wikinfo | Alkane
The density of an alkane is less than 1.
Alkanes are generally unreactive because the C-H and C-C single bonds are stable and difficult to break.
Images, some of which are used under the doctrine of Fair use or used with permission, may not be available.
www.wikinfo.org /wiki.php?title=Alkane   (414 words)

  
 Alkane - Wikipedia, the free encyclopedia (via CobWeb/3.1 planetlab2.cs.umd.edu)   (Site not responding. Last check: 2007-09-18)
Each carbon atom in an alkane has sp³ hybridization.
In addition, the melting points of alkanes with an odd number of carbon atoms increase faster than the melting points of alkanes with an even number of carbon atoms (see figure): the cause of this phenomenon is the higher packing density of the alkanes with an even number of carbon atoms.
Alkanes react with halogens in a so-called free radical halogenation reaction.
en.wikipedia.org.cob-web.org:8888 /wiki/Alkane   (4486 words)

  
 alkane — Infoplease.com
to indicate that the compound is an alkane; e.g., alkanes with 5, 6, 7, 8, 9, and 10 carbon atoms in their molecules are pentane, hexane, heptane, octane, nonane, and decane, respectively.
Evaluation of Alkane Sulfonic Acid Catalysts and Derivatives for Curing Activity in a Melamine/Acrylic Polyol Coating Formulation......
Alkane on the road to being a gold star.
www.infoplease.com /ce6/sci/A0803365.html   (260 words)

  
 Alkane › Investors › Carbon Friendly Credits
This calculation is worked out on the basis that in 2005 there were 92 million Alkane shares in issue and the company saves around 400,000* tonnes of CO2 per year by capturing methane and turning it into green energy.
An investor with a 5% stake in Alkane would be entitled to value its contribution to reducing climate change at the equivalent of 20,000 tonnes of CO2.
Alkane Energy plc accepts no liability or responsibility for how individuals or businesses use the Carbon Friendly logo.
www.alkane.co.uk /carbon_friendly.php   (393 words)

  
 Alkane Energy Acquisition
RNS Number:6321X Alkane Energy PLC 15 April 2004 15 April 2004 Alkane Energy plc ("Alkane") Announces Acquisition of Farmatic Biotech Energy UK Ltd ("FBE") Alkane is pleased to announce that it has acquired an 83% interest in FBE through an investment of #150,000 of new shares in FBE.
Alkane, through FBE, expects to invest up to #700,000 into BI giving it a majority interest in the company.
Alkane has also provided a loan of #100,000 to FBE which, with the investment, will be used for working capital and to fund FBE's planned investment in the first phase of the Fivemiletown project.
www.advfn.com /news_acquisition_7372626.html   (747 words)

  
 Alkane -- from Eric Weisstein's World of Chemistry
An alkane is a hydrocarbon consisting only of single carbon-carbon bonds.
Alkanes are named according to the following rules.
Organometallic coupling: a process that uses a copper lithium dialkyl reagent as an intermediate in the synthesis of longer chain alkanes by reaction with a primary alkyl halide
scienceworld.wolfram.com /chemistry/Alkane.html   (321 words)

  
 Alkane Energy says German unit Pro2 lifts orders; sets up Hungarian service co - Forbes.com   (Site not responding. Last check: 2007-09-18)
Alkane chairman John Lander will tell shareholders at this morning's AGM that the company's first German renewable energy plant, using coal mine methane (CMM) as fuel, has been generating at full capacity since March.
Three more CMM projects are in the pre-development phase, one of which Alkane hopes to complete by the end of the year.
Alkane's recent UK acquisition, Farley Energy Engineering Ltd, which provides equipment and services to the landfill gas and wastewater sectors, is now fully integrated under the name Pro2 Services Ltd.
www.forbes.com /home/feeds/afx/2005/05/11/afx2016856.html   (565 words)

  
 OEDILF - Word Lookup
Alkyl (AL-keel or AL-kuhl) groups are formed by the removal of a proton from an alkane (hydrocarbon chain).
Alkylation (al-kul-LAY-shun) is the adding of such a side chain to an organic molecule.
An alkane is any of a series of non-aromatic, saturated, aliphatic hydrocarbons having the general formula C
www.oedilf.com /db/Lim.php?Word=alkane   (167 words)

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