Claims
- 1. A heterogeneous catalyst comprising hollow, spherical, gas-impervious particles comprising a metal shell containing a gas at a pressure above atmospheric and having a layer of catalyst on the surface thereof.
- 2. A catalyst according to claim 1 in which the diameter of the particles is from 0.20 mm to 5.0 mm.
- 3. A catalyst according to claim 1 in which the catalyst layer includes a metal.
- 4. A catalyst according to claim 3 in which the metal is selected from transition metals and noble metals and the catalyst includes an activator and/or promoter.
- 5. A catalyst according to claim 1 in which the gas is air.
ORIGIN OF THE INVENTION
The invention described herein was made in the performance of work under a NASA contract and is subject to the provisions of Section 305 of the National Aeronautics and Space Act of 1958, Public Law 83-568 (72 Stat 435; 42 USC 2457).
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
763944 |
Jul 1967 |
CAX |
2055787 |
Mar 1981 |
GBX |