KR102572062B1 - 이산화탄소의 직접 수소화 반응용 촉매 - Google Patents
이산화탄소의 직접 수소화 반응용 촉매 Download PDFInfo
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- KR102572062B1 KR102572062B1 KR1020210124227A KR20210124227A KR102572062B1 KR 102572062 B1 KR102572062 B1 KR 102572062B1 KR 1020210124227 A KR1020210124227 A KR 1020210124227A KR 20210124227 A KR20210124227 A KR 20210124227A KR 102572062 B1 KR102572062 B1 KR 102572062B1
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- 239000003054 catalyst Substances 0.000 title claims abstract description 143
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 49
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 49
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 30
- 239000002245 particle Substances 0.000 claims description 136
- 239000010420 shell particle Substances 0.000 claims description 73
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 49
- 239000010949 copper Substances 0.000 claims description 31
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 27
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 23
- 229910052700 potassium Inorganic materials 0.000 claims description 23
- 239000011591 potassium Substances 0.000 claims description 23
- 229910052782 aluminium Inorganic materials 0.000 claims description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000007771 core particle Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 67
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 22
- 229930195733 hydrocarbon Natural products 0.000 abstract description 21
- 238000012546 transfer Methods 0.000 abstract description 10
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 33
- 239000000203 mixture Substances 0.000 description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 19
- 229910002091 carbon monoxide Inorganic materials 0.000 description 19
- 229910052742 iron Inorganic materials 0.000 description 19
- 239000007789 gas Substances 0.000 description 13
- 239000002243 precursor Substances 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 238000004817 gas chromatography Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 239000012691 Cu precursor Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229910001593 boehmite Inorganic materials 0.000 description 3
- 239000012018 catalyst precursor Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012494 Quartz wool Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 229910001567 cementite Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 229910021094 Co(NO3)2-6H2O Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000012692 Fe precursor Substances 0.000 description 1
- 229910016870 Fe(NO3)3-9H2O Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- -1 oxides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- B01J35/002—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the alkali- or alkaline earth metals or beryllium
- B01J23/04—Alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/02—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon
- C07C1/12—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon from carbon dioxide with hydrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/30—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen
- C10G2/32—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts
- C10G2/33—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon monoxide with hydrogen with the use of catalysts characterised by the catalyst used
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
Abstract
Description
도 2는 본 발명의 실시예 1, 2 및 4와 비교예 1, 5 및 6에서 제조된 이산화탄소의 직접 수소화 반응용 촉매의 사진이다.
구분 | 촉매 | 알루미나볼 직경 (mm) |
외각부 입자층/중심부 입자의 두께비 | 외각부 입자층/중심부 입자의 중량비 |
실시예 1 | 100Fe-13Cu-12Al-15K | 2 | 0.11 | 0.24 |
실시예 2 | 100Fe-13Cu-12Al-35K | 2 | 0.10 | 0.21 |
실시예 3 | 100Fe-13Cu-12Al-40K | 2 | 0.11 | 0.22 |
실시예 4 | 100Fe-13Cu-12Al-15K | 3 | 0.21 | 0.22 |
비교예 1 | 100Fe-13Cu-12Al | 2 | 0.09 | 0.21 |
비교예 2 | 100Fe-13Cu-12Al-9K | 2 | 0.10 | 0.23 |
비교예 3 | 100Fe-13Cu-12Al-11K | 2 | 0.08 | 0.20 |
비교예 4 | 100Fe-13Cu-12Al-60K | 2 | 0.11 | 0.25 |
비교예 5 | 100Fe-12Co-12Al-15K | 2 | 0.10 | 0.20 |
비교예 6 | 100Fe-13Zn-12Al-15K | 2 | 0.09 | 0.21 |
비교예 7 | 100Fe-13Cu-12Al-15K | 2 | 0.05 | 0.15 |
비교예 8 | 100Fe-13Cu-12Al-15K | 2 | 0.34 | 0.47 |
구분 | 마모율 (%) |
실시예 1 | 1.68 |
실시예 4 | 3.70 |
비교예 7 | 0.51 |
비교예 8 | 24.34 |
구분 | K/Fe 중량비 |
CO2 전환율(%) | CO yield (%) |
HC yield (%) |
CH4 선택도 (%) |
C2 선택도 (%) |
C3+ 선택도 (%) |
실시예 1 | 0.15 | 38.9 | 2.4 | 36.5 | 10.6 | 8.7 | 80.7 |
실시예 2 | 0.35 | 37.3 | 2.7 | 34.6 | 11.8 | 9.9 | 78.3 |
실시예 3 | 0.40 | 35.9 | 2.7 | 33.2 | 12.0 | 10.0 | 78.1 |
실시예 4 | 0.15 | 35.8 | 2.5 | 33.3 | 9.9 | 8.5 | 81.7 |
비교예 1 | 0.00 | 30.0 | 6.4 | 23.6 | 15.2 | 8.1 | 76.7 |
비교예 2 | 0.09 | 33.3 | 3.0 | 30.4 | 12.1 | 10.8 | 77.1 |
비교예 3 | 0.11 | 34.0 | 2.9 | 31.1 | 12.0 | 11.1 | 77.0 |
비교예 4 | 0.60 | 32.9 | 2.9 | 30.0 | 9.8 | 8.7 | 81.5 |
구분 | CO2 전환율(%) | CO yield (%) |
HC yield (%) |
CH4 선택도 (%) |
C2 선택도 (%) |
C3+ 선택도 (%) |
실시예 1 | 38.9 | 2.4 | 36.5 | 10.6 | 8.7 | 80.7 |
비교예 5 | 41.0 | 2.0 | 39.1 | 17.1 | 13.4 | 69.6 |
비교예 6 | 26.6 | 3.8 | 22.8 | 14.0 | 11.7 | 74.4 |
비교예 7 | 20.3 | 6.6 | 13.8 | 13.8 | 11.4 | 74.8 |
비교예 8 | 29.7 | 4.1 | 25.6 | 10.6 | 8.5 | 80.9 |
20 : 바인더층
25 : 분말상 촉매 입자
30 : 외각부 입자층
Claims (6)
- 알루미나볼로 이루어진 중심부 입자; 및
상기 중심부 입자 표면을 둘러싸면서 부착된 외각부 입자층을 포함하되,
상기 외각부 입자층은 분말상 촉매 입자로 이루어지며, 상기 분말상 촉매 입자는 철(Fe), 구리(Cu), 알루미늄(Al) 및 K(칼륨)을 포함하고, 상기 중심부 입자에 대한 외각부 입자층(외각부 입자층/중심부 입자)의 중량비는 0.2 ~ 0.25인 것을 특징으로 하는 이산화탄소의 직접 수소화 반응용 촉매.
- 제1항에 있어서,
상기 철(Fe), 구리(Cu), 알루미늄(Al) 및 K(칼륨)은 100 : 5 ~ 30 : 5 ~ 30 : 15 ~ 40 중량비로 포함하는 것을 특징으로 하는 이산화탄소의 직접 수소화 반응용 촉매.
- 제1항에 있어서,
상기 알루미나볼은 벌크밀도가 1.5 g/cm3 ~ 2.5 g/cm3이고, 모스경도가 7.5 이상이며, 충격강도가 25 kgf ~ 30 kgf이고, 수분 흡수율이 2 % ~ 5 %인 것을 특징으로 하는 이산화탄소의 직접 수소화 반응용 촉매.
- 제1항에 있어서,
상기 중심부 입자에 대한 외각부 입자층(외각부 입자층/중심부 입자)의 두께비는 0.08 ~ 0.25인 것을 특징으로 하는 이산화탄소의 직접 수소화 반응용 촉매.
- 삭제
- 제1항에 있어서,
상기 중심부 입자 및 외각부 입자층의 마모율은 3.7 % 이하인 것을 특징으로 하는 이산화탄소의 직접 수소화 반응용 촉매.
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KR1020210124227A KR102572062B1 (ko) | 2021-09-16 | 2021-09-16 | 이산화탄소의 직접 수소화 반응용 촉매 |
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