Claims
- 1. A catalyst composition suitable for the vapor-phase oxidation of methacrolein to produce methacrylic acid consisting essentially of the oxides of molybdenum, copper, phosphorus, antimony, calcium, and rhenium and having the formula Mo.sub.a Cu.sub.b P.sub.c Sb.sub.d Ca.sub.e Re.sub.f O.sub.g, where: a=12; b=0.05-3; c=0.1-5; d=0.1-0.7; e=0.1-6; f=0.005-0.5; and g=value determined by the valence and proportions of the other elements of the formula.
CROSS-REFERENCED TO OTHER APPLICATIONS
This is a continuation-in-part of U.S. Ser. No. 973,495 filed Dec. 26, 1978.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4000088 |
Shimizu et al. |
Dec 1976 |
|
4045478 |
Umemura et al. |
Aug 1977 |
|
4085065 |
White et al. |
Apr 1978 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
973495 |
Dec 1978 |
|