KR100917697B1 - 질소를 함유하는 전이금속―탄소나노튜브 혼성촉매, 그의제조방법 및 이를 이용하여 수소를 생산하는 방법 - Google Patents
질소를 함유하는 전이금속―탄소나노튜브 혼성촉매, 그의제조방법 및 이를 이용하여 수소를 생산하는 방법 Download PDFInfo
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- carbon nanotube
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- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 106
- 239000003054 catalyst Substances 0.000 title claims abstract description 105
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 230000007704 transition Effects 0.000 title claims abstract description 48
- 239000001257 hydrogen Substances 0.000 title claims abstract description 42
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 42
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 45
- 150000003624 transition metals Chemical class 0.000 claims abstract description 21
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 13
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 29
- -1 transition metal salt Chemical class 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
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- 239000002184 metal Substances 0.000 claims description 19
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- 229910017052 cobalt Inorganic materials 0.000 claims description 11
- 239000010941 cobalt Substances 0.000 claims description 11
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 11
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- 239000004215 Carbon black (E152) Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 9
- 229910021524 transition metal nanoparticle Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
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- 150000002736 metal compounds Chemical class 0.000 claims description 7
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- 150000002739 metals Chemical class 0.000 claims description 5
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- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
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Abstract
Description
Claims (27)
- 질소를 함유하는 탄소나노튜브에 균일한 크기의 전이금속 나노입자가 분포되어 있는 전이금속-탄소나노튜브 혼성촉매.
- 제 1항에 있어서, 상기 질소를 0.01~20at.% 함유하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매.
- 제 1항에 있어서, 상기 전이금속 나노입자가 탄소나노튜브의 표면에 균일하게 분포되어 있는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매.
- 제 1항에 있어서, 상기 전이금속이 철(Fe), 코발트(Co), 니켈(Ni) 및 이들의 금속이 포함된 금속화합물로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매.
- 제 1항에 있어서, 상기 혼성촉매가 수소발생 속도를 향상시키는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매.
- 전이금속염을 함유하는 환원성 용매에 질소를 함유하는 탄소나노튜브를 분산시키는 단계; 및 상기 전이금속염을 환원시키는 단계; 를 포함하는 질소가 첨가된 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 질소를 함유하는 탄소나노튜브를 분산시킨 환원성 용매에 전이금속염을 첨가하는 단계; 및 상기 전이금속염을 환원시키는 단계; 를 포함하는 질소가 첨가된 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 전이금속이 철(Fe), 코발트(Co), 니켈(Ni) 및 이들의 금속이 포함된 금속화합물로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 전이금속염이 초산염 또는 클로라이드 염인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 용매가 폴리올인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 10항에 있어서, 상기 폴리올이 에틸렌글리콜, 다이에틸렌글리콜, 폴리에틸렌글리콜, 1,2-프로판다이올 및 도데칸다이올로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 질소를 함유하는 탄소나노튜브는 금속촉매의 존재하에 탄화수소 가스와 질소 가스를 플라즈마 화학기상증착(plasma CVD)법에 의해 반응시켜 제조되는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 12항에 있어서, 상기 금속촉매가 철(Fe), 코발트(Co), 니켈(Ni) 및 이들의 금속이 포함된 금속화합물로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 12항에 있어서, 상기 반응에 사용되는 가스는 탄화수소 가스 1~99 %(v/v)와 질소 가스 1~99 %(v/v)인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 12항에 있어서, 상기 탄화수소 가스가 탄소수 1 내지 2의 경탄화수소인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 12항에 있어서, 상기 플라즈마 화학기상증착(plasma CVD)법의 발생원이 마이크로웨이브(microwave), RF 파워(RF power) 또는 DC 파워 소스(DC power source)인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 질소를 함유하는 탄소나노튜브는 질소를 0.01~20at.% 함유하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항 또는 제 7항에 있어서, 상기 전이금속염을 환원시키는 단계는 환원제를 첨가하여 가열하는 것을 특징으로 하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 18항에 있어서, 상기 환원제가 수산화나트륨, 수소화붕소나트륨(NaBH4) 및 수소화리튬알루미늄(LiAlH4)으로 이루어진 군에서 선택되는 1종 이상인 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 6항에 있어서, 상기 환원성 용매에 함유되는 전이금속염의 농도를 조절하여 전이금속 나노입자의 크기를 조절하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 삭제
- 제 6항 또는 제 7항에 있어서, 상기 전이금속염의 환원 단계 후에 분산액을 원심분리하고, 진공건조한 후 열처리하는 단계를 더 포함하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
- 제 1항 내지 제 5항 중 어느 한 항에 의한 전이금속-탄소나노튜브 혼성촉매를 촉매로 이용하여 수소를 생산하는 방법.
- 제 23항에 있어서, 상기 촉매로 이용하여 수소를 생산하는 방법은 알칼라인 수소화붕소나트륨(alkaline NaBH4) 용액에 상기 전이금속-탄소나노튜브 혼성촉매를 주입하여 반응시키는 것을 특징으로 하는 수소를 생산하는 방법.
- 제 24항에 있어서, 상기 알칼라인 수소화붕소나트륨 용액은 강염기 용액에 수소화붕소나트륨을 첨가하여 제조되는 것을 특징으로 하는 수소를 생산하는 방법.
- 제 25항에 있어서, 상기 강염기는 NaOH, LiOH, KOH, Ca(OH)₂및 Ba(OH)₂로 이루어진 군에서 선택되는 것을 특징으로 하는 수소를 생산하는 방법.
- 제 7항에 있어서, 상기 환원성 용매에 첨가되는 전이금속염의 농도를 조절하여 전이금속 나노입자의 크기를 조절하는 것을 특징으로 하는 전이금속-탄소나노튜브 혼성촉매의 제조방법.
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US12/328,801 US20090155163A1 (en) | 2007-12-13 | 2008-12-05 | Transition Metal-Carbon Nanotube Hybrid Catalyst Containing Nitrogen, Method for Preparation Thereof, and Method for Generation of Hydrogen Using the Same |
US13/350,553 US20120121499A1 (en) | 2007-12-13 | 2012-01-13 | Transition Metal-Carbon Nanotube Hybrid Catalyst Containing Nitrogen, Method for Preparation Thereof, and Method for Generation of Hydrogen Using the Same |
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US8524420B2 (en) | 2009-11-25 | 2013-09-03 | Hyundai Motor Company | Method for preparing nano-sized metal particles on a carbon support |
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DE102009058833A1 (de) * | 2009-12-18 | 2011-06-22 | Bayer Technology Services GmbH, 51373 | Stickstoff-dotierte Kohlenstoffnanoröhrchen mit Metall-Nanopartikeln |
DE102011010659A1 (de) * | 2011-02-09 | 2012-08-09 | Studiengesellschaft Kohle Mbh | Verfahren zur Herstellung eines Übergangsmetallkatalysators |
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DE102012211238A1 (de) | 2011-12-12 | 2013-06-13 | Hyundai Motor Company | Verfahren zum Herstellen von Katalysatoren des Kern-Schale-Typs auf einem Träger und mit diesem gebildete Katalysatoren des Kern-Schale-Typs auf einem Träger |
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