Copper oxidation catalysts and method for preparing the same

• US 3,907,716 A
• Filed: 03/22/1974
• Issued: 09/23/1975
• Est. Priority Date: 03/22/1974
• Status: Expired due to Term

• Current Assignee: Gottfried C. Haacke
• Original Assignee: Gottfried C. Haacke
• Inventors: Haacke, Gottfried C.
• Primary Examiner(s): Shine, W. J.
• Application Number:
  US05/453,618
• Time in Patent Office: 550 Days
• Field of Search: 252/471,474 423/213.2,599
• US Class Current: 502/324
• CPC Class Codes: B01D 53/944 Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts three-way-catalysts [TWC] B01D53/9445
• CPC Class Codes: B01J 23/8892 Manganese
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

There are provided novel oxidation catalysts of the class having the structure:

Claims

1. A COMPOUND HAVING THE STRUCTURE:

2. The compound of claim 1 wherein x is 0.5, y is 2.1, z is 0.4.

3. The compound of claim 1 wherein x is 0.25, y is 2.35 and z is 0.4.

4. A process for the preparation of the copper cobalt manganese oxide compound of claim 1 which comprises the steps of:

dissolving in an aqueous medium a copper salt, a cobalt salt, and a manganese salt in predetermined equivalent amounts, introducing the solution into a container filled with liquid nitrogen, evaporating the contents therein under vaccum and heating the solids recovered at a temperature between about 225*C. and 275*C., heating resultant mixture to a temperature of 650*C. for 72 hours in the presence of oxygen, and recovering the copper cobalt manganese oxide therefrom.

5. The process according to claim 4 wherein the cobalt salt is cobalt nitrate.

6. The process according to claim 4 wherein the manganese salt is manganese nitrate.

7. The process according to claim 4 wherein the copper salt is cupric nitrate.