Claims
- 1. A process for the preparation of methacrylic acid which comprises oxidizing methacrolein in the vapor phase with molecular oxygen in the presence of a catalyst composition consisting essentially of Mo.sub.a Cu.sub.b P.sub.c Sb.sub.d Cs.sub.e O.sub.f where: a=12; b=0.05-3; c=0.1-5; d=0.01-3; e=0.1-3; and f=value determined by the valence and proportions of the other elements of the formula.
Parent Case Info
This is a division of application Ser. No. 973,354 filed Dec. 26, 1978, now U.S. Pat. No. 4,374,757.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1430337 |
Mar 1976 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
973354 |
Dec 1978 |
|