Catalyst, structures, reactors, and methods of forming same
Structures, catalysts, and reactors suitable for use for a variety of applications, including gas-to-liquid and coal-to-liquid processes and methods of forming the structures, catalysts, and reactors are disclosed. The catalyst material can be deposited onto an inner wall of a microtubular reactor and/or onto porous support structures using atomic layer deposition techniques.
1. A method of forming a catalyst, the method comprising the steps of:
providing a polymer support structure comprising resin, poly(styrene-divinylbenzene) (PS-DVB), or other high internal phase emulsion (HIPE) polymer;
forming an oxide support structure by deposing an oxide overlying the polymer support structure;
heat treating the oxide support structure to form one or more crystalline regions; and
forming a catalyst layer overlying the one or more crystalline regions, wherein the catalyst layer comprises crystalline planes,
wherein the oxide support structure comprises material selected from the group consisting of one or more of alumina, silica, and titania.
2. The method of claim 1 , wherein the oxide support structure has a surface area greater than or equal to 50 m 2 /g.
3. The method of claim 1 , wherein the step of forming the oxide support structure comprises ALD.
4. The method of claim 1 , wherein the step of forming the catalyst layer comprises ALD.
5. The method of claim 1 , wherein the catalyst layer comprises one or more of Co, Ni, FePt, NiPt, Rh, Ru, Pd, Os, V, Fe and Mn.
6. The method of claim 1 , wherein the oxide support structure comprises interconnected mesoporous and/or macroporous structures.
7. The method of claim 1 , further comprising a step of forming a heat-conductive layer between the oxide support structure and the catalyst layer.
8. The method of claim 1 , wherein during the step of heat treating, the polymer support structure is exposed to an ammonia, a hydrogen, or an oxygen environment.
9. The method of claim 8 , wherein during the step of heat treating, the polymer support structure is exposed to the oxygen environment.
10. The method of claim 1 , wherein the catalyst layer comprises cobalt.
11. The method of claim 1 , wherein the step of forming the oxide support structure is performed in a packed-bed reactor.
12. The method of claim 1 , further comprising a step of forming a heat-conductive layer overlying the catalyst layer.
13. The method of claim 1 , further comprising a step of preforming a Fischer Tropsch process using the catalyst layer.
14. The method of claim 1 , further comprising the steps of providing a microtubular reactor, wherein the polymer support structure is provided within the microtubular reactor.
15. The method of claim 14 , wherein the catalyst layer is deposited on an interior wall of the microtubular reactor.
16. A method of forming a catalyst structure, the method comprising the steps of:
providing a sacrificial support structure comprising resin, poly(styrene-divinylbenzene) (PS-DVB), or other high internal phase emulsion (HIPE) polymer;
forming an oxide support structure by conformally depositing oxide material onto the sacrificial support structure;
depositing, using atomic layer deposition, one or more metals selected from the group consisting of Co, Ni, NiPt, Rh, Ru, Pd, Os, V, Fe, and Mn, onto the oxide support; and
forming a protective organic layer on the one or more metals by terminating the atomic layer deposition with material derived from an atomic layer deposition precursor,
wherein the oxide support structure comprises material selected from the group consisting of one or more of alumina, silica, and titania.
17. The method of claim 16 , further comprising a step of removing the sacrificial support structure.
18. The method of claim 16 , wherein the oxide support structure comprises interconnected mesoporous and/or macroporous structures.