Catalyst For Producing Methacrylic Acid And Method For Producing The Same, And Method For Producing Methacrylic Acid
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United States of America Patent
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Issued Date -
Feb 25, 2016
app pub date -
Mar 24, 2014
filing date -
Mar 28, 2013
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Abandoned
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Abstract
Disclosed is a method for producing a catalyst for producing methacrylic acid by subjecting methacrolein or the like to vapor phase catalytic oxidation, which contains, as essential active components, Mo, V, P, Cs, NH4 and Cu, the method including (a) a step of preparing a heteropoly acid aqueous solution or the like (A liquid) containing, as constituent elements, Mo, P and V; (b) a step of mixing a part of the resulting A liquid with a cesium compound aqueous solution or the like (B liquid); and (c) a step of mixing the remainder of the A liquid with the B liquid to prepare a slurry liquid (C liquid).
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