Claims
- 1. The process for the production of acrylic acid or methacrylic acid from acrolein and methacrolein, respectively, with molecular oxygen optionally in the presence of steam at a temperature of about 200.degree. to about 500.degree. C employing a catalyst having the empirical formula:
- Mo.sub.a V.sub.b Ge.sub.c X.sub.d Y.sub.e O.sub.f
- wherein X can be one or more of the elements selected from the group consisting of iron, nickel, thallium, phosphorus, indium, bismuth, and the rare earths; and
- Y can be one or more of the elements of the group consisting of copper, tin, chromium, manganese, magnesium, aluminum, titanium, arsenic, niobium, tantalum, potassium, rubidium, cesium, tungsten, uranium, cobalt, silver, gallium, antimony, and zinc; and
- wherein the number of atoms of each element present is represented by a through f,
- wherein
- a is a number from 6 to 18;
- b is a number from 0.1 to 10;
- c is a number from 0.1 to 6;
- d is a number from 0.01 to 5;
- e is a number from 0 to 5;
- f is a number that satisfies the valence requirements of the other elements present.
- 2. The process in claim 1 wherein acrylic acid is prepared from acrolein.
- 3. The process of claim 1 wherein in the catalyst formula a = 9 to 15; b = 0.5 to 5; c = 0.5 to 3; d = 0.05 to 1; e = 0.0 to 1; and f is a number that satisfies the valence requirements of the other elements present.
- 4. The process in claim 1 wherein in the empirical formula X is iron.
- 5. The process in claim 1 wherein in the empirical formula X is thallium.
- 6. The process in claim 1 wherein in the empirical formula X is phosphorus.
- 7. The process in claim 1 wherein in the empirical formula X is bismuth.
- 8. The process in claim 1 wherein in the empirical formula X is indium.
Parent Case Info
This application is a divisional of application Ser. No. 686,352, filed May 14, 1976.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,170,851 |
Nov 1969 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
686352 |
May 1976 |
|