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US 8,575,060 B2Granted
Method of fabricating fuel reforming catalyst for SOFC power generating system
AssigneeInstitute of Nuclear Energy Research, Atomic Energy Council
InventorsNing-Yih Hsu, Chun Ching Chien
Life of this patent
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Abstract
A fuel reforming catalyst is fabricated. The catalyst is used in solid oxide fuel cell. By using the catalyst, the hydrogen generation is enhanced with a great reforming ratio. In addition, the catalyst is coking-resistant and will not be broken into powder after a long time of use.
Claims9
A method of fabricating a fuel reforming catalyst for a solid oxide fuel cell (SOFC) power generating system, comprising the steps of:
- (a) sintering γ-Al2O3 in a high-temperature furnace provided with air under a temperature increasing rate of 5 Celsius degrees per minute (° C./min) to a temperature of 1080-1320° C. for a time period of 6-9 hours (hr);
- and, then, cooling down said temperature to room temperature under a temperature decreasing rate of 5° C./min to obtain a catalyst of α-Al2O3;
- (b) dissolving Ce(NO3)3.6H2O in de-ionized water to obtain a Ce(NO3)3 solution;
- (c) impregnating said catalyst of α-Al2O3 with said Ce(NO3)3 solution;
- (d) taking surplus water from said Ce(NO3)3 solution containing said catalyst of α-Al2O3 by a cyclotron vacuum concentrator to obtain CeO2/α-Al2O3;
- (e) drying the CeO2/α-Al2O3 in an oven;
- (f) sintering the CeO2/α-Al2O3 in a high-temperature furnace provided with air under a temperature increasing rate of 5° C./min to a temperature of 440-660° C. for a time period of 3-5 hrs;
- (g) dissolving dihydrogen hexachloroplatinate in de-ionized water to obtain a platinum solution;
- (h) impregnating CeO2/α-Al2O3 with said platinum solution;
- (i) taking surplus water out of said platinum solution containing CeO2/α-Al2O3 by a cyclotron vacuum concentrator;
- and
- (j) sintering said platinum solution containing CeO2/α-Al2O3 in a high-temperature furnace provided with air under a temperature increasing rate of 5° C./min to a temperature of 520-780° C. for a time period of 3-5 hr;
- and, then, cooling down said temperature to room temperature under a temperature decreasing rate of 5° C./min to obtain a catalyst of Pt/CeO2/α-Al2O3.
10 more elements
A method of fabricating a fuel reforming catalyst for a solid oxide fuel cell (SOFC) power generating system, comprising the steps of:
- (a) sintering γ-Al2O3 in a high-temperature furnace provided with air under a temperature increasing rate of 5 Celsius degrees per minute (° C./min) to a temperature of 1080-1320° C. for a time period of 6-9 hours (hr);
- and, then, cooling down said temperature to room temperature under a temperature decreasing rate of 5° C./min to obtain a catalyst of α-Al2O3;
- (b) dissolving Ce(NO3)3.6H2O in de-ionized water to obtain a Ce(NO3)3 solution;
- (c) impregnating said catalyst of α-Al2O3 with said Ce(NO3)3 solution;
- (d) taking surplus water of said Ce(NO3)3 solution containing said catalyst of α-Al2O3 out by a cyclotron vacuum concentrator to obtain CeO2/α-Al2O3;
- (e) drying the CeO2/α-Al2O3 in an oven;
- (f) sintering CeO2/α-Al2O3 into a high-temperature furnace provided with air under a temperature increasing rate of 5° C./min to a temperature of 440-660° C. for a time period of 3-5 hrs;
- (g) dissolving Ni(NO3)3.6H2O in de-ionized water to obtain a nickel solution;
- (h) impregnating CeO2/α-Al2O3 with said nickel solution;
- (i) taking surplus water out of said nickel solution containing CeO2/α-Al2O3 by a cyclotron vacuum concentrator;
- and
- (j) sintering said nickel solution containing CeO2/α-Al2O3 in a high-temperature furnace provided with air under a temperature increasing rate of 5° C./min to a temperature of 520-780° C. for a time period of 3-5 hr;
- and, then, cooling down said temperature to room temperature under a temperature decreasing rate of 5° C./min to obtain a catalyst of Ni/CeO2/α-Al2O3.
10 more elements
Dependencies are inferred from the claim text.