Process of catalytic ammoxidation for hydrogen cyanide production
View Patent ↗A process for the ammoxidation of an alcohol feed, such as methanol, or a nitrile feed, such as propionitrile, or a mixture thereof, to form hydrogen cyanide uses a modified Mn—P catalyst having the following empirical formula: Mn a P 1 A b O x where A=one or more of K, Ca, Mo, Zn, Fe or mixtures thereof; a=1 to 1.5; b=0.01 to 1.0 and x is a total number of oxygen atoms determined by the oxidation states of the other elements present.
1. A process for the ammoxidation of an alcohol or nitrile or an alcohol and nitrile mixture feed to hydrogen cyanide comprising
passing said feed along with ammonia and oxygen into a reaction zone in the presence of a modified Mn—P catalyst having the following empirical formula:
Mn a P 1 A b O x
where
A=one or more of K, Ca, Mo, Zn, Fe or mixtures thereof;
a=1 to 1.5;
b=0.01 to 1.0 and
x is a total number of oxygen atoms determined by the oxidation states of the other elements present.
2. The process of claim 1 , wherein the catalyst is on a support.
3. The process of claim 2 , wherein the support is selected from the group consisting of TiO 2 , Al 2 O 3 and SiO 2 .
4. The process of claim 3 , wherein the support is SiO 2 .
5. The process of claim 1 , wherein said alcohol feed is methanol.
6. The process of claim 1 , wherein said oxygen is supplied as air.
7. The process of claim 1 , wherein said nitrile feed is propionitrile.
8. The process of claim 7 , wherein A=Fe.
9. The process of claim 1 , wherein said modified Mn—P catalyst is provided as a fluidized bed of catalyst.
10. A catalyst for the ammoxidation of an alcohol or nitrile or an alcohol and nitrile mixture feed to hydrogen cyanide having the following empirical formula:
Mn a P 1 A b O x
where
A=one or more of K, Ca, Mo, Zn, Fe or mixtures thereof;
a=1 to 1.5;
b=0.01 to 1.0 and
x is a total number of oxygen atoms determined by the oxidation states of the other elements present.
11. The catalyst of claim 10 , wherein said catalyst is on a support.
12. The catalyst of claim 11 , wherein the support is selected from the group consisting of TiO 2 , Al 2 O 3 and SiO 2 .
13. The catalyst of claim 12 , wherein the support is SiO 2 .