Method for the manufacture of acrylic acid
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United States of America Patent
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-
Jul 31, 2001
Grant Date -
N/A
app pub date -
Dec 8, 1998
filing date -
Dec 8, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the manufacture of acrylic acid comprising reacting propylene and oxygen (preferably in the form of air) in a reaction zone having a catalyst characterized by the following formula: A.sub.a B.sub.b C.sub.c Ca.sub.d Fe.sub.e Bi.sub.f Mo.sub.12 O.sub.x where A=one or more of Li, Na, K, Rb and Cs B=one or more of Mg, Sr, Mn, Ni, Co and Zn C=one or more of Ce, Cr, Al, Sb, P, Ge, Sn, Cu, V and W and a=0.01 to 1.0; b and e =1.0-10 c=0 to 5.0, preferably 0.05 to 5.0, especially preferred being 0.05 to 4.0 d and f=0.05 to 5.0, and x is a number determined by the valence requirements of the other elements present; at an elevated temperature to produce acrylic acid and acrolein.
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