Pentene refers to all the alkenes In organic chemistry, an alkene, olefin, or olefine is an unsaturated chemical compound containing at least one carbon-to-carbon double bond. The simplest acyclic alkenes, with only one double bond and no other functional groups, form an homologous series of hydrocarbons with the general formula CnH2n with chemical formula A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound C Carbon is the chemical element with symbol C and atomic number 6. As a member of group 14 on the periodic table, it is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. There are three naturally occurring isotopes, with 12C and 13C being stable, while 14C is radioactive, decaying with a half-life of5H Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of 1.00794 u (1.007825 u for Hydrogen-1), hydrogen is the lightest and most abundant chemical element, constituting roughly 75 % of the Universe's elemental mass. Stars in the main sequence are mainly composed of hydrogen in its10 containing a single double bond A covalent bond is a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms, and other covalent bonds. In short, the attraction-to-repulsion stability that forms between atoms when they share electrons is known as covalent bonding within its molecular structure. 1-Pentene (pent-1-ene) and 2-pentene (pent-2-ene) differ by the location of the double bond at the first or second carbon-carbon bond. 1-Pentene is an alpha-olefin Alpha-olefins are a family of organic compounds which are olefins or alkenes with a chemical formula CxH2x, distinguished by having a double bond at the primary or alpha (α) position. See the illustration below. This location of a double bond enhances the reactivity of the compound and makes it useful for a number of applications.
Most often 1-pentene is made as a byproduct of catalytic or thermal cracking of petroleum Petroleum or crude oil is a naturally occurring, toxic, flammable liquid consisting of a complex mixture of hydrocarbons of various molecular weights, and other organic compounds, that are found in geologic formations beneath the Earth's surface. Petroleum is recovered mostly through oil drilling. It is refined and separated, most easily by, or during production of ethylene Ethylene is a gaseous organic compound with the formula C2H4. It is the simplest alkene (older name: olefin from its oil-forming property). Because it contains a carbon-carbon double bond, ethylene is classified as an unsaturated hydrocarbon. Ethylene is widely used in industry and also has a role in biology as a hormone. Ethylene is the most and propylene Propene, also known as propylene, is an unsaturated organic compound having the chemical formula C3H6. It has one double bond, and is the second simplest member of the alkene class of hydrocarbons, and it is also second in natural abundance via thermal cracking of hydrocarbon fractions.
1-Pentene is rarely isolated as a separate compound. Instead, it is most often blended into gasoline Gasoline or petrol is a petroleum-derived liquid mixture which is primarily used as a fuel in internal combustion engines. It is also used as a solvent, mainly known for its ability to dilute paints or, in a mixture with other hydrocarbons, alkylated Alkylation is the transfer of an alkyl group from one molecule to another. The alkyl group may be transferred as an alkyl carbocation, a free radical, a carbanion or a carbene . Alkylating agents are widely used in chemistry because the alkyl group is probably the most common group encountered in organic molecules. Many biological target molecules with isobutane Isobutane, also known as methylpropane or 2-methylpropane, is an alkane, isomeric with butane. It is the simplest alkane with a tertiary carbon. Recent concerns with depletion of the ozone layer by freon gases have led to increased use of isobutane as a gas for refrigeration systems, especially in domestic refrigerators and freezers, and as a to make gasoline.
The only commercial manufacturer of 1-pentene, an alkene In organic chemistry, an alkene, olefin, or olefine is an unsaturated chemical compound containing at least one carbon-to-carbon double bond. The simplest acyclic alkenes, with only one double bond and no other functional groups, form an homologous series of hydrocarbons with the general formula CnH2n with a double bond on the end of the linear chain, is Sasol Ltd Sasol (Suid Afrikaanse Steenkool en Olie ). is a South African company involved in mining, energy, chemicals and synfuels. In particular, they produce petrol and diesel profitably from coal and natural gas using Fischer-Tropsch process. The company has factories at Sasolburg and Secunda (Secunda CTL) and has taken a stake in projects under, a South African Coordinates: 29°02′46″S 25°03′47″E / 29.046°S 25.063°E The Republic of South Africa is a country located at the southern tip of Africa, with a 2,798 kilometres coastline on the Atlantic and Indian Oceans. To the north lie Namibia, Botswana and Zimbabwe; to the east are Mozambique and Swaziland; while Lesotho is an independent petrochemical company, where it is separated from crude made by the Fischer-Tropsch process The Fischer–Tropsch process is a set of chemical reactions that convert a mixture of carbon monoxide and hydrogen into liquid hydrocarbons. The process, a key component of gas to liquids technology, produces a petroleum substitute, typically from coal, natural gas, or biomass for use as synthetic lubrication oil and as synthetic fuel. The F-T.
2-Pentene has two geometrical isomers In organic chemistry, cis-trans isomerism or geometric isomerism or configuration isomerism or E-Z isomerism is a form of stereoisomerism describing the orientation of functional groups within a molecule. In general, such isomers contain double bonds, which cannot rotate, but they can also arise from ring structures, wherein the rotation of bonds. Cis-2-Pentene is used in olefin metathesis Olefin metathesis or transalkylidenation is an organic reaction that entails redistribution of alkylene fragments by the scission of carbon - carbon double bonds in olefins. Since its discovery, olefin metathesis has gained widespread use in research and industry for making products ranging from medicines and polymers to enhanced fuels.[citation.
Branched isomers are 2-methylbut-1-ene, 3-methylbut-1-ene (isopentene), and 2-methylbut-2-ene.
Alternative names for pentene molecules include amylene, isoamylene, n-amylene or n-pentene (1-pentene), and beta-n-amylene or sym-methylethylethylene (2-pentene)
Isoamylene is one of three main byproducts of deep catalytic cracking (DCC), a relatively new concept that is very similar to the operation of the FCC Fluid catalytic cracking is the most important conversion process used in petroleum refineries. It is widely used to convert the high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products. Cracking of petroleum hydrocarbons was originally done by thermal cracking. The DCC uses vacuum gas oil (VGO) as a feedstock to produce primarily polypropylene Polypropylene , also known as polypropene, is a thermoplastic polymer, made by the chemical industry and used in a wide variety of applications, including packaging, textiles (e.g. ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components,, isobutylene Isobutylene is a hydrocarbon of significant industrial importance. It is a four-carbon branched alkene (olefin), one of the four isomers of butylene. At standard temperature and pressure it is a colorless flammable gas, and isoamylene. The rise in demand for polypropylene Polypropylene , also known as polypropene, is a thermoplastic polymer, made by the chemical industry and used in a wide variety of applications, including packaging, textiles (e.g. ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, has encouraged the growth of the DCCU, which is operated very much like an FCCU. Isobutylene Isobutylene is a hydrocarbon of significant industrial importance. It is a four-carbon branched alkene (olefin), one of the four isomers of butylene. At standard temperature and pressure it is a colorless flammable gas and isoamylene are feedstocks necessary for the production of the much debated gasoline blending components MTBE Methyl tert-butyl ether, also known as methyl tertiary butyl ether and MTBE, is a chemical compound with molecular formula C5H12O. MTBE is a volatile, flammable and colorless liquid that is immiscible with water. MTBE has a minty odor vaguely reminiscent of diethyl ether, leading to unpleasant taste and odor in water. MTBE is a gasoline additive, (methyl tert-butyl ether) and TAME (tertiary amyl butyl ether).
See also
|
||||||||
| This article about a hydrocarbon is a stub. You can help Wikipedia by expanding it. |
Categories: Alkenes |
|
Q. What product(s) when S-3-methyl-1-pentene reacts with water containing a catalytic amount of sulfuric acid?
Asked by Royale162 - Sun Nov 9 10:59:23 2008 - - 1 Answers - 0 Comments
A. the two enantiomers of 3-methylpentan-2-ol
Answered by CB - Sun Nov 9 11:11:18 2008