Chemical scavenging component for a fuel system
A chemical scavenging component includes a porous body that has a radical-scavenging material. The radical-scavenging material has a composition that includes cerium oxide that is chemically active with regard to oxygen-containing radicals.
1. A chemical scavenging component for a fuel system, the component comprising:
a porous body including a radical-scavenging material, the radical-scavenging material having a composition including cerium oxide that is chemically active with regard to oxygen-containing radicals, wherein the cerium oxide includes nanocrystallites, wherein the composition includes the cerium oxide dispersed in a binder matrix that includes at least one of aluminosilicate sol-gel or amorphous silicon.
2. The component as recited in claim 1 , wherein the porous body is a filter mesh.
3. The component as recited in claim 2 , wherein the filter mesh includes particles fixed therein, and the particles include the cerium oxide.
4. The component as recited in claim 1 , wherein the porous body is a packed bed with media particles that include the cerium oxide.
5. The component as recited in claim 1 , wherein the porous body is a monolithic screen formed of the cerium oxide.
6. The component as recited in claim 1 , wherein the porous body includes a substrate and a coating fixed on the substrate, the coating including the cerium oxide.
7. The component as recited in claim 1 , wherein the porous body is selected from the group consisting of a filter mesh that includes particles of the cerium oxide fixed therein, a monolithic screen formed of the cerium oxide, and a packed bed with media particles that include the cerium oxide.
8. The component as recited in claim 1 , wherein the composition with cerium oxide includes zirconium as a dopant element.
9. The component as recited in claim 1 , wherein the nanocrystallites are ceria-zirconia-titania nanocrystallites.
10. The component as recited in claim 1 , wherein the nanocrystallites have a size of 1 to 5 nanometers.
11. The component as recited in claim 10 , wherein the composition with cerium oxide includes zirconium as a dopant element.
12. The component as recited in claim 11 , wherein the composition with cerium oxide includes at least one of cobalt oxide and yttrium oxide.
13. A chemical scavenging component for a fuel system, the component comprising:
a substrate; and
a radical-scavenging coating fixed on the substrate, and the radical-scavenging coating has a composition that includes cerium oxide that is chemically active with regard to oxygen-containing radicals in hydrocarbon fuel, wherein the cerium oxide includes nanocrystallites, wherein the composition includes the cerium oxide dispersed in a binder matrix that includes at least one of aluminosilicate sol-gel or amorphous silicon.
14. The component as recited in claim 13 , wherein the substrate is a screen.
15. The component as recited in claim 14 , wherein the screen is a wire mesh.
16. The component as recited in claim 14 , wherein the screen is a perforated sheet.
17. The component as recited in claim 14 , wherein the screen is formed of stainless steel.
18. The component as recited in claim 13 , wherein the substrate is a fuel tube.
19. The component as recited in claim 13 , wherein the chemical activity of the cerium oxide is reversible in the hydrocarbon fuel.
20. A fuel system comprising:
fuel tank;
at least one fuel injector;
at least one fuel tube that connects the fuel tank with the at least one fuel injector; and
a screen fixed in the at least one fuel tube, the screen including a radical-scavenging material, and the radical-scavenging material has a composition including cerium oxide that is chemically active with regard to oxygen-containing radicals, wherein the cerium oxide includes nanocrystallites, wherein the composition includes the cerium oxide dispersed in a binder matrix that includes at least one of aluminosilicate sol-gel or amorphous silicon.
21. The fuel system as recited in claim 20 , wherein the at least one fuel tube includes a fueldraulic circuit, and the screen is fixed in the fueldraulic circuit.
22. The fuel system as recited in claim 20 , wherein the screen is a wire mesh or a perforated sheet, with a coating of the cerium oxide material.
23. The fuel system as recited in claim 20 , wherein the screen is formed of stainless steel.