Claims
- 1. A catalyst for the oxidative dehydrogenation of propane, of the following formula:
- Ni.sub.a MoO.sub.x (I)
- in which:
- a is a number from 0.6 to 1.3, and
- x is a number determined by the valency requirements of nickel and of molybdenum, wherein the catalyst further comprises an inert solid diluent in a mixture.
- 2. A catalyst according to claim 1, wherein a=1 and x=4.
- 3. A catalyst according to claim 2, wherein the catalyst has a specific surface of from 20 to 50 m.sup.2 /g.
- 4. A catalyst according to claim 1, wherein the ratio x/a is from 3.5 to 6.
- 5. A catalyst according to claim 1, wherein the catalyst has a specific surface of from 20 to 50 m.sup.2 /g.
- 6. A process for the manufacture of a catalyst for the oxidative dehydrogenation of propane, of the following formula:
- Ni.sub.a MoO.sub.x (I)
- in which:
- a is a number from 0.6 to 1.3 and x is a number determined by the valency requirements of nickel and of molybdenum, wherein the catalyst further comprises an inert solid diluent in a mixture, comprising the steps of:
- (a) reacting solutions of ammonium molybdate and nickel nitrate to prepare a solvated precursor of the formula:
- aNiO.MoO.sub.3.nH.sub.2 O.mNH.sub.3
- wherein
- a is a number from 0.6 to 1.3 and
- m and n are numbers dependent on the reaction conditions; and
- (b) subsequently heating and thermally decomposing said solvated precursor over a period of from 1 to 4 hours at a temperature T.sub.1 of 520.degree. to 600.degree. C.
- 7. A process according to claim 6, further comprising a final step of thermally activating the decomposed precursor over a period of from 5 to 30 minutes at a temperature T.sub.2 which is higher than T.sub.1, wherein T.sub.2 is from 600.degree. to 750.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
89 00552 |
Jan 1989 |
FRX |
|
Parent Case Info
This application is a continuation of application Ser. No. 07/465,785, filed Jan. 18, 1990, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1800063 |
Apr 1970 |
DEX |
1197534 |
Jul 1970 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
465785 |
Jan 1990 |
|