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Topic: Sulfur trioxide

	Sulfuric acid - Wikipedia, the free encyclopedia
		Sulfuric acid is a constituent of acid rain, being formed by atmospheric oxidation of sulfur dioxide in the presence of water.
		Sulfuric acid is produced in the upper atmosphere of Venus by the sun's photochemical action on carbon dioxide, sulfur dioxide, and water vapor.
		This is oxidised to sulfur trioxide using oxygen in the presence of a vanadium(V) oxide catalyst.
	en.wikipedia.org /wiki/Sulfuric_acid (2677 words)

	Sulfur trioxide: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-29)
		British english (or uk english) is a collective term for the forms of english spoken in the british isles....
		A liquid (a phase of matter) is a fluid whose volume is fixed under conditions of constant temperature and pressure; and, whose shape is usually determined...
		(it produces sulfuric acid[Follow this hyperlink for a summary of this subject] (H
	www.absoluteastronomy.com /encyclopedia/s/su/sulfur_trioxide.htm (465 words)

	ipedia.com: Sulfur dioxide Article (Site not responding. Last check: 2007-10-29)
		Sulfur dioxide (spelt in British English Sulphur dioxide) has the chemical formula SO
		The gas is irritant to the lungs and is often described in layman's terms as smelling of rotten eggs.
		Sulfur dioxide is frequently used as a food additive: particularly as a preservative in alcoholic drinks.
	www.ipedia.com /sulfur_dioxide.html (165 words)

	ScienceDaily: Super Sulfur Soaker Material May Help Control Diesel Emissions
		Finding a way to capture sulfur is important since most fuels have a sulfur content that is harmful to the environment, clogs emissions control devices or damages fuel cells.
		Sulfur hexafluoride -- Sulfur hexafluoride (SF6) is a gas whose molecules consist of one sulfur atom and six fluorine atoms.
		Sulfur -- Sulfur or sulphur is the chemical element in the periodic table that has the symbol S and atomic number 16.
	www.sciencedaily.com /releases/2005/09/050911111618.htm (1463 words)

	Articles - Oxide (Site not responding. Last check: 2007-10-29)
		Oxides containing only one oxygen are called oxide or monoxide, those containing two oxygen atoms dioxide, three trioxide, four tetroxide, and so on following the Greek numerical prefixes.
		Oxides are characterized by a redistribution of electrons, in which the oxygen atoms have a net surplus of electrons and the other atoms a net lack.
		In oxides of hydrogen, carbon, nitrogen, sulfur, phosphorus and halogens, covalent bonds occur between oxygen and the other elements.
	www.worldhammock.com /articles/Oxide (457 words)

	ScienceWeek
		The ceria, particularly in combination with zirconia, works as an oxygen storage component, enabling the oxidation of hydrocarbons and carbon monoxide to occur during moments when the engine exhaust is fuel-rich.
		The lanthana serves to stabilize the alumina against a loss of surface area, and the baria acts as a trap for sulfur trioxide: a catalyst deactivator, or "poison." 4) The importance of small particles to the performance of catalysts has stimulated extensive efforts to develop tools for their characterization (2,3).
		Originating from the fields of physics, chemistry, materials science, and chemical engineering, this area of study is now often referred to as "nanoscience".
	www.scienceweek.com /2003/sw030613.htm (6195 words)

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