Method for the manufacture of acrylic acid
US6268529A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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: EQU 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 PA1 A=one or more of Li, Na, K, Rb and Cs PA1 B=one or more of Mg, Sr, Mn, Ni, Co and Zn PA1 C=one or more of Ce, Cr, Al, Sb, P, Ge, Sn, Cu, V and W and PA1 a=0.01 to 1.0; b and e =1.0-10 PA1 c=0 to 5.0, preferably 0.05 to 5.0, especially preferred being 0.05 to 4.0 PA1 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.