Catalyst for methacrylic acid production and process for producing methacrylic acid
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United States of America Patent
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Jan 26, 2016
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Oct 23, 2014
app pub date -
Nov 16, 2012
filing date -
Nov 16, 2012
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Abstract
There is provided a hetero polyacid-based catalyst for methacrylic acid production, which is more excellent in performance, life and moisture absorption during storage, the catalyst being a catalyst for methacrylic acid production, wherein a proton is replaced so as to satisfy conditions of α=A+(B×C) and 0.5≦α≦1.4 when the atomic ratio of the alkali metal atom relative to 10 atoms of Mo is taken as A and the atomic ratio of the copper atom relative to 10 atoms of Mo is taken as B in MoaPbVcCudYeZfOg where Y represents cesium or the like; Z represents iron or the like; and a to g represent each an atomic ratio of each element relative to 10 atoms of Mo.
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