Catalyst and Methods for Producing Maleic Anhydride
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United States of America Patent
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Issued Date -
Sep 18, 2008
app pub date -
Jul 21, 2006
filing date -
Jul 28, 2005
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Abstract
Catalysts comprising a catalytically active composition, the catalytically active composition comprising vanadium, phosphorus, iron and oxygen, wherein the catalytically active composition has an iron:vanadium atomic ratio of 0.005 to <0.05, and wherein iron in the catalytically active composition is derived from an iron starting material comprising Fe(III) phosphate; and processes for making such catalysts as well as uses therefor to prepare maleic anhydride are described.
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