KR20060102420A - 초미세 기공을 갖는 다공성의 나노 미립자 이산화티탄광촉매 및 안료의 제조방법 - Google Patents
초미세 기공을 갖는 다공성의 나노 미립자 이산화티탄광촉매 및 안료의 제조방법 Download PDFInfo
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- KR20060102420A KR20060102420A KR1020050024260A KR20050024260A KR20060102420A KR 20060102420 A KR20060102420 A KR 20060102420A KR 1020050024260 A KR1020050024260 A KR 1020050024260A KR 20050024260 A KR20050024260 A KR 20050024260A KR 20060102420 A KR20060102420 A KR 20060102420A
- Authority
- KR
- South Korea
- Prior art keywords
- titanium dioxide
- nano
- photocatalyst
- porous
- sized pores
- Prior art date
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 379
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 162
- 239000011148 porous material Substances 0.000 title claims abstract description 101
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- 238000000034 method Methods 0.000 title claims description 20
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- 238000006386 neutralization reaction Methods 0.000 claims description 26
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 0.000 claims description 24
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- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 16
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- CAAULPUQFIIOTL-UHFFFAOYSA-N methyl dihydrogen phosphate Chemical compound COP(O)(O)=O CAAULPUQFIIOTL-UHFFFAOYSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 208000013220 shortness of breath Diseases 0.000 description 1
- 208000008842 sick building syndrome Diseases 0.000 description 1
- UKHWJBVVWVYFEY-UHFFFAOYSA-M silver;hydroxide Chemical compound [OH-].[Ag+] UKHWJBVVWVYFEY-UHFFFAOYSA-M 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- B01J21/063—Titanium; Oxides or hydroxides thereof
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Abstract
Description
구 분 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 |
비표면적 | 326 | 185 | 100 | 46 | 19 | 9 |
구 분 | 황산이온(SO3)의 함량(%) |
비교예 1 | 15 |
실시예 8 | 3.0 |
실시예 9 | 1.2 |
실시예 10 | 0.3(300ppm) |
실시예 11 | 0.07(70ppm) |
항 균 실 험 | ||
균종 | 경과시간(시간) | 세균감소율(%) |
대장균 | 초기 | 0 |
12 | 100 | |
황색포도상구균 | 초기 | 0 |
12 | 100 |
시험항목 | TiO2함량(%) | 5분 | 15분 | 30분 | 60분 |
탈취율(%) | 20 | 72.0 | 84.0 | 85.0 | 87.0 |
30 | 74.5 | 86.4 | 88.0 | 90.4 |
시험항목 | TiO2함량(%) | 6시간 | 12시간 | 24시간 |
NO제거율(%) | 30 | 75.0 | 94.0 | 98.0 |
NO2제거율(%) | 30 | 74.3 | 89.7 | 95.4 |
SO2제거율(%) | 30 | 72.2 | 87.0 | 94.0 |
실험항목 | 초기 | 30분 | 60분 | 90분 | 120분 |
탈취율(%) | 0 | 73.4 | 92.4 | 98.7 | 100 |
실험항목 | 초기 | 1분 | 10분 | 30분 | 60분 |
포름알데히드감소율(%) | 0 | 37.4 | 68.7 | 94.7 | 99.8 |
실험항목 | 초기 | 12시간 | 24시간 |
대장균 살균율(%) | 0 | 88.7 | 99.9 |
황색포도상구균 살균율(%) | 0 | 87.9 | 99.9 |
구 분 | 경과시간(분) | 블랭크 농도(ppm) | 시료농도(ppm) | 탈취율(%) |
탈취 실험 | 초기 | 500 | 500 | 0 |
30 | 494 | 9.9 | 98 | |
60 | 486 | 4.9 | 99 | |
90 | 472 | 4.7 | 99 | |
120 | 460 | 4.6 | 99 |
시 간 | 1분 | 10분 | 30분 | 60분 |
분해효율 | 30% | 75% | 95% | 100% |
실험균명 | 실험 시료 | 실험시작전 (개/㎖) | 12시간 후 (개/㎖) | 세균감소율(%) |
대장균 | 대조군 | 3.5*105 | 3.0*107 | - |
실시예 2 | 3.5*105 | <10 | <99.9% | |
황색포도상구균 | 대조군 | 1.9*105 | 9*105 | - |
실시예 2 | 1.9*105 | <10 | <99.9% |
Claims (13)
- 입자 내부에 중심 기공의 지름이 0.01 내지 5㎚의 기공을 갖는, 아나타제형의 이산화티탄으로 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매.
- 이산화티탄의 제조에 있어서,(1) 건조 분쇄된 티탄원광에 80 내지 95% 농도의 황산(H2SO4)을 1.5 내지 3.0배 혼합하여 폭발적인 반응을 시켜 용해된 황산티탄용액을 만드는 용해단계;(2) 상기 용해단계에서 수득된 황산티탄용액(티타닐황산)을 침강조에서 청등화하여 불용해 잔분을 침전시켜 청등액만 여과하고, 황산티탄용액을 0 내지 -5℃의 온도범위로 냉각하여 황산티타늄용액 중에 많이 함유되어 있는 황산제1철(FeSO4.7H2O)을 생성시켜 이것을 원심분리기를 통하여 결정을 분리한 후 여과시키는 여과단계;(3) 상기 여과단계에서 수득된 황산티탄 청등여액에 물을 2.0 내지 3.0배수로 가하여 가수분해하면 백색유탁의 수산화티탄 미립자를 생성시키는 가수분해단계;(4) 상기 가수분해단계에서 생성되는 수산화티탄산 여액에 암모니아수, 중탄산암모늄 등의 염기를 가하여 중성으로 중화시키는 중화단계;(5) 상기 중화단계에서 수득된 침전물을 물로 세척하여 수산화티탄산 슬러리에 함유된 황산, 가용성불순물 즉 철분, 기타 성분을 필터로 여과하여 제거하는 세척단계; 및(6) 상기 수득된 이산화티탄 슬러리를 50 내지 100℃의 온도에서 10 내지 30시간 동안 수열시켜 다공성의 결정상으로 전이시키는 전이단계;들을 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매의 제조방법.
- 제 2 항에 있어서,상기 전이단계 이후에 수득된 이산화티탄 슬러리를 압착하여 수분을 제거하고, 100 내지 1,200℃의 온도로 가열하여 소성시키는 소성단계를 더 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매의 제조방법.
- 제 2 항에 있어서,상기 중화단계 이후에 아세트산아연(zinc acetate dihydrate ; Zn(CH3COO)2ㆍ2H2O), 소듐실리케이트 용액(sodium silicate solution ; Na2OㆍnSiO2ㆍxH2O) 또는 질산은(silver nitrate ; AgNO3) 등을 첨가하여 금속이온을 담지시키는 담지단계를 더 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화 티탄 광촉매의 제조방법.
- 제 3 항 또는 제 4 항에 있어서,상기 소성단계에서의 소성에 의하여 수득되는 아나타제형의 이산화티탄.
- 제 5 항에 있어서,상기 소성단계에서의 1,000℃까지의 소성에 의하여 수득되는 99% 이상의 아나타제형의 이산화티탄.
- 제 5 항에 있어서,상기 소성단계에서의 1,000 내지 1,200℃의 소성에 의하여 수득되는 아나타제상(anatase) 이산화티탄이 0 내지 90%, 루틸상(rutile) 이산화티탄이 5 내지 60%로 전이되어 수득되는 이산화티탄,
- 상기 청구항 제 2 항에 따라 수득되는 나노 크기의 기공을 갖는 수열반응 시킨 다공성의 이산화티탄 슬러리에 통상의 도료 조성물의 제조를 위하여 사용되는 수용성 바인더수지와 물 등을 혼합하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
- 제 8 항에 있어서,상기 청구항 제 2 항에 따라 수득되는 나노 크기의 기공을 갖는 수열반응 시킨 다공성의 이산화티탄 슬러리 100중량부, 수용성 에멀션 아크릴 중합체 5 내지 15중량부, 수용성 우레탄 수지 1 내지 10중량부, 실리카-졸(silica-Sol) 10 내지 20중량부, 소포제 0.1 내지 0.5중량부, 폴리카르복실산형 분산제 0.1 내지 0.5중량부들을 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
- 제 9 항에 있어서,착색제(무기계 안료) 0.1 내지 5.0중량%, pH조절제로서 제1급 아민 0.1 내지 3.0중량%, 동결안정제로서 에틸렌글리콜 3 내지 10중량%를 더 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
- 제 9 항 또는 제 10 항에 있어서,음이온 및 원적외선을 방출하는 광물분말이 상기 도료 총량을 기준으로 10 내지 90중량%의 양으로 더 포함되어 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
- 제 11 항에 있어서,상기 광물분말이 전기석, 일라이트, 도석, 석회석, 규석, 황토, 맥반석, 옥 분말, 제올라이트, 활성탄, 활성점토, 코디어라이트, 알루미나 등 또는 이들 중 2이상의 혼합물로 이루어지는 그룹으로부터 선택된 것임을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
- (1) 수용성 에멀션 아크릴 중합체 5 내지 15중량부, 수용성 우레탄 수지 1 내지 10중량부, 실리카-졸(silica-Sol) 10 내지 20중량부, 소포제 0.1 내지 0.5중량부, 폴리카르복실산형 분산제 0.1 내지 0.5중량부를 모두 혼합하고, 700rpm으로 15분간 교반하는 제1혼합단계; 및(2) 상기 청구항 제 2 항에 따라 수득되는 나노 크기의 기공을 갖는 수열반응 시킨 다공성의 이산화티탄 슬러리 100중량부를 첨가하고, 1,500 내지 2,500rpm으로 10 내지 30분간 고속 교반하는 제2혼합단계;들을 포함하여 이루어짐을 특징으로 하는 나노 크기의 기공을 갖는 다공성의 이산화티탄 광촉매를 포함하는 도료.
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JPH11343426A (ja) | 1998-06-02 | 1999-12-14 | Toray Ind Inc | 光触媒塗料 |
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