Gasoline: Gasoline is composed of about 500 hydrocarbons such as heptane, ethyl benzene, etc. ASTM Standard D5798-11, "Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines," ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/D5798-11. Answers to frequently asked questions about octane. Ethanol is a type of alcohol, and the two are formed by the fermentation of glucose by enzymes in yeast. The alcohol reacts with the polymers causing swelling, and over time the oxygen breaks down the carbon-carbon bonds in the polymer causing a reduction in tensile strength. Web. Key Terms: C2H5OH, Chemical Formula, Combustion, Crude Oil, Ethanol, Ethyl Alcohol, Fuel, Gasoline. The atomic arrangement of ethanol (ethyl alcohol) is given below. All automakers approve blends up to E10 in their gasoline vehicles. The upper bound (27% mpg decrease) is based on the difference in official EPA fuel economy tests of recent-model FFVs operating on ethanol-free gasoline and operating on E85. Ethanol also has higher octane properties than gasoline. The car industry in Japan criticized GAIAX, saying that "fires broke out because high density alcohol had corroded the fuel pipes". Ethanol: Ethanol is more environmentally friendly due to its complete combustion. The only difference between ethyl alcohol and ethanol is that ethyl alcohol is the common name given for the compound C 2 H 5 OH whereas ethanol is the IUPAC name given for the ethyl alcohol. [citation needed], "FlexFuel" vehicles have upgraded fuel system and engine components which are designed for long life using E85 or M85, and the ECU can adapt to any fuel blend between gasoline and E85 or M85. Vehicles produce about half of the greenhouse gases from a typical U.S. household. National Committee of Planning and Action Coordination for Methanol can be produced industrially from nearly any biomass, including animal waste, or from carbon dioxide and water or steam by first converting the biomass to synthesis gas in a gasifier. Because it is mostly a product of processed corn, ethanol also reduces the pressure to drill in environmentally-sensitive places, such as the north slope of Alaska, the Arctic Ocean, and the Gulf of Mexico. Though ethanol and other biofuels are often promoted as clean, low-cost alternatives to gasoline, industrial corn and soy farming still have a harmful impact on the environment, just in a different way. Pros and Cons of Using Ethanol Biofuel E85. Commercially available gasoline is added with several additives in order to enhance its properties. Gasoline is mainly made of linear chain hydrocarbon compounds. Both alcohols have a high octane rating, with ethanol at 109 RON (Research Octane Number), 90 MON (Motor Octane Number), (which equates to 99.5 AKI) and methanol at 109 RON, 89 MON (which equates to 99 AKI). This tends to increase their fuel efficiency and largely offsets the lower energy density of vehicular alcohol fuels (as compared to petrol/gasoline and diesel fuels), thus resulting in comparable "fuel economy" in terms of distance per volume metrics, such as kilometers per liter, or miles per gallon. According to some authorities, producing enough biofuels to enable their widespread adoption could mean converting most of the world’s remaining forests and open spaces to farmland—a sacrifice few people would be willing to make. E10 and E15 World Development Report 2008: Agriculture for Development, http://www.greencarcongress.com/biobutanol/index.html, https://web.archive.org/web/20080528051420/http://www.ethanol.org/pdf/contentmgmt/2007_Ethanol_Fact_Book.pdf, Hydrogen internal combustion engine vehicle, https://en.wikipedia.org/w/index.php?title=Alcohol_fuel&oldid=939399647, Articles with dead external links from September 2017, Articles with permanently dead external links, Articles with dead external links from June 2017, Articles needing additional references from January 2012, All articles needing additional references, Wikipedia articles needing clarification from May 2009, Articles with unsourced statements from August 2008, Articles with unsourced statements from October 2010, Articles with unsourced statements from October 2012, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 February 2020, at 06:36.
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