CN101195498A - 含二氧化钛的分散体 - Google Patents
含二氧化钛的分散体 Download PDFInfo
- Publication number
- CN101195498A CN101195498A CNA2007100022123A CN200710002212A CN101195498A CN 101195498 A CN101195498 A CN 101195498A CN A2007100022123 A CNA2007100022123 A CN A2007100022123A CN 200710002212 A CN200710002212 A CN 200710002212A CN 101195498 A CN101195498 A CN 101195498A
- Authority
- CN
- China
- Prior art keywords
- dispersion
- titanium dioxide
- mol
- ratio
- hydroxycarboxylic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 241
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 105
- 239000006185 dispersion Substances 0.000 title claims abstract description 104
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000843 powder Substances 0.000 claims description 39
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 31
- 150000001414 amino alcohols Chemical class 0.000 claims description 24
- 229940058020 2-amino-2-methyl-1-propanol Drugs 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 235000015165 citric acid Nutrition 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 230000001698 pyrogenic effect Effects 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 abstract 3
- 239000011164 primary particle Substances 0.000 abstract 1
- -1 oxygen anion Chemical class 0.000 description 12
- 229910044991 metal oxide Inorganic materials 0.000 description 11
- 150000004706 metal oxides Chemical class 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- 239000012159 carrier gas Substances 0.000 description 8
- 230000001699 photocatalysis Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 4
- 239000011941 photocatalyst Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 150000003016 phosphoric acids Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052728 basic metal Inorganic materials 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 description 2
- 229940043276 diisopropanolamine Drugs 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 239000004034 viscosity adjusting agent Substances 0.000 description 2
- XJBNELXWSXDUFP-UHFFFAOYSA-N 1,1,3-tris(hydroxymethyl)urea Chemical compound OCNC(=O)N(CO)CO XJBNELXWSXDUFP-UHFFFAOYSA-N 0.000 description 1
- OYWRDHBGMCXGFY-UHFFFAOYSA-N 1,2,3-triazinane Chemical class C1CNNNC1 OYWRDHBGMCXGFY-UHFFFAOYSA-N 0.000 description 1
- NCXUNZWLEYGQAH-UHFFFAOYSA-N 1-(dimethylamino)propan-2-ol Chemical compound CC(O)CN(C)C NCXUNZWLEYGQAH-UHFFFAOYSA-N 0.000 description 1
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- KFGWEMFTDGCYSK-UHFFFAOYSA-N 3-methyl-1,2-thiazole 1-oxide Chemical compound CC=1C=CS(=O)N=1 KFGWEMFTDGCYSK-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- LVDKZNITIUWNER-UHFFFAOYSA-N Bronopol Chemical compound OCC(Br)(CO)[N+]([O-])=O LVDKZNITIUWNER-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 244000287680 Garcinia dulcis Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 125000002648 azanetriyl group Chemical group *N(*)* 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 229960003168 bronopol Drugs 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- PCHPORCSPXIHLZ-UHFFFAOYSA-N diphenhydramine hydrochloride Chemical compound [Cl-].C=1C=CC=CC=1C(OCC[NH+](C)C)C1=CC=CC=C1 PCHPORCSPXIHLZ-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- CNKCLOZWBNHWPH-UHFFFAOYSA-N n,n-dibromopropanamide Chemical compound CCC(=O)N(Br)Br CNKCLOZWBNHWPH-UHFFFAOYSA-N 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 1
- QUBQYFYWUJJAAK-UHFFFAOYSA-N oxymethurea Chemical compound OCNC(=O)NCO QUBQYFYWUJJAAK-UHFFFAOYSA-N 0.000 description 1
- 229950005308 oxymethurea Drugs 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229910003446 platinum oxide Inorganic materials 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229940075554 sorbate Drugs 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000001370 static light scattering Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229960004418 trolamine Drugs 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
- C03C17/25—Oxides by deposition from the liquid phase
- C03C17/256—Coating containing TiO2
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5041—Titanium oxide or titanates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
- C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
- C09D17/007—Metal oxide
- C09D17/008—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
- C09D7/67—Particle size smaller than 100 nm
-
- 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
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/212—TiO2
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/71—Photocatalytic coatings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0081—Uses not provided for elsewhere in C04B2111/00 as catalysts or catalyst carriers
- C04B2111/00827—Photocatalysts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/805—Transparent material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Structural Engineering (AREA)
- Nanotechnology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
- Paints Or Removers (AREA)
- Colloid Chemistry (AREA)
Abstract
水分散体,其含有二氧化钛、水、至少一种氨基醇和至少一种羟基羧酸,所述二氧化钛以体积平均聚集体直径为70-100nm的初级颗粒的聚集体的形式存在,并且在所述分散体中,二氧化钛的比例是25-50重量%,氨基醇的比例是2.5-6.5μmol/m2二氧化钛比表面积,而且羟基羧酸的比例是1-3μmol/m2比表面积,并且氨基醇/羟基羧酸之比以mol/mol计是2-3。
Description
本发明涉及一种包含二氧化钛粉、醇胺和羧酸的水分散体。
为了理解半导体光化学,文献中讨论了三种作用模式,它们是光矿化、光灭菌和光致超亲水性。
二氧化钛是一种感光半导体,并且吸收近紫外区的电磁辐射。固态时价带与导带之间的能量差,对金红石而言是3.05eV,对锐钛矿而言是3.29eV,对金红石而言,相当于<415nm下的吸收带,对锐钛矿而言相当于<385nm下的吸收带。
光能的吸收导致电子从价带提升到导带。该电子和新产生的正“电子空穴”可以在固体表面上移动,在其上它可以参与氧化还原反应。可以将通常吸附于二氧化钛表面上的水分子氧化,产生OH自由基。它们是目前为止比臭氧或氯强的氧化剂。另一方面,氧还原形成超氧阴离子O2 -并且在第二还原步骤中会有过氧阴离子O2 2-。这些阴离子带有中间氧化力。所有这些氧化物质会使有机化合物完全氧化为二氧化碳和水。
锐钛矿形式比金红石形式需要更高的光能,但是显示更强的光活性。这可以用锐钛矿中激发态的更长寿命和氧以阴离子形态在锐钛矿表面的更好吸附来解释。
根据反应条件,有机化合物可以完全矿化成下面的最终产物:有机分子->CO2+H2O、有机N化合物->HNO3+CO2+H2O;有机S化合物->H2SO4+CO2+H2O;有机Cl化合物->HCl+CO2+H2O。
由于在固体表面发生反应,因此向催化剂表面的扩散是速度决定步骤。在液相反应中,产生各种中间分解产物。在一些情况下,这些中间产物使催化剂表面失活。
当用紫外光照射时,二氧化钛表面上形成的自由基也会攻击微生物细胞,这样可以有效地使用纳米级二氧化钛来抑制表面上或液体中的细菌、病毒、藻类、酵母、霉菌和其它微生物的生长。
另一机理讨论了在涂布有TiO2薄膜的表面上观察到的所谓的光致超亲水性。UV激发产生可以将桥接O2-物质氧化成氧的电子空穴对由此产生“氧离子缺位”。吸附水之后发生羟基化,并且表面性能变成大得多的亲水性能。可以测定小于5°的水接触角并将这种表面看作是超亲水的。在暗处该过程正好相反。
这种表面的自身清洗和除雾作用起因于表面上收集的污垢和尘垢容易用水冲洗掉的事实。
二氧化钛的光催化作用的实例包括防污染水泥、自清洁油漆、空气和水净化、脱臭、抗菌表面如屋面和瓷砖、自清洁瓷砖和玻璃以及防雾镜。
二氧化钛例如可以通过溶胶-凝胶法涂布,如EP-A-590477中所述。
DE-A-10324519描述了一种方法,其中将比表面积为25m2/g-200m2/g的光催化活性金属氧化物粉的分散体涂布到氧化物陶瓷基料上形成层,接着通过形成光催化活性的多孔氧化物陶瓷涂层来使所述层硬化。所用的光催化活性金属氧化物粉优选是通过火焰水解TiCl4获得的二氧化钛。这些粉的初级颗粒经常具有约15nm-约30nm的粒径。例如,可以使用得自Degussa的二氧化钛P25。
DE-A-10324519没有显示金属氧化物分散体的性质,目的是使所述分散体适宜作为涂布材料。所有所述的是它必须含有标准化试剂和/或粘合剂。优选使用的标准化试剂是有机粘度调节剂,例如羧甲基纤维素。这些粘度调节剂对于赋予悬浮液适宜的粘度是必需的,从而后者能以所需层厚可靠地涂布到陶瓷基料。
而且,DE-A-10229761公开了含有磷酸盐或聚磷酸盐的金属氧化物分散体。由于与有机添加剂相反,(聚)磷酸盐在加热所述层的过程中不除去,因此这些分散体不适合作为陶瓷基质的涂布材料。
EP-A-981584描述了一种分散体的制备方法,所述分散体具有至少78重量%的二氧化钛颜料和至少3重量%的氧化铝的固体含量。为了运输通常将分散体稀释,并且为了降低二氧化钛颗粒的粒径还要进一步粉碎然后再使用。
EP-A-850203描述了一种分散体,它含有在有机溶剂中的单分散的多孔二氧化钛颗粒,所述分散体用于涂布基质。所述分散体的制备复杂。首先,二氧化钛颗粒是通过在羧酸盐或磷酸盐存在的情况下在水介质中将有机钛化合物水解制得的,过滤分离,然后再分散于有机溶剂中。有机分散体的二氧化钛含量可以是不大于300g/l。
US-6509841公开了一种光催化除去废水中的有机物质的方法,其中所用光催化剂由基于热解制得的二氧化钛的颗粒制成。用于制备颗粒的水中分散体可以呈现3-25重量%的二氧化钛浓度。为了提高分散体的稳定性并在喷雾干燥之后改善颗粒形态,可以向分散体中加入有机辅料。
US6992042公开了一种光催化剂,它含有掺杂有气溶胶的热解制得的二氧化钛,并且含有选自由氧化锌、氧化铂、氧化镁和氧化铝组成的组的氧化物作为掺杂组分。所述光催化剂或者具有a)65m2/g-80m2/g的BET表面积和40ppm-800ppm的掺杂组分浓度,或者具有b)35m2/g-60m2/g的BET表面积和大于1000ppm的掺杂组分浓度。通过掺杂金属/贵金属或类金属的氧化物可以使任选酸化的含水悬浮液中的光催化活性增加或降低。公开的水分散体含有1g/l的掺杂颗粒。
US5698177公开了一种二氧化钛粉的制备方法,其包括以下步骤:在反应区中将蒸汽相TiCl4和O2混合、在所述反应区对所述混合物进行外部加热并收集形成的二氧化钛粉。所述二氧化钛粉可用作光催化剂。
US6777374公开了一种部分氧化反应用的光催化剂,其包括二氧化钛,所述二氧化钛已经通过火焰气溶胶沉积由涂布前体沉积在基质上从而形成纳米结构的薄膜。
US6,884,753公开了一种分散体的制备方法,该方法通过在约70℃或更高的温度下加热二氧化钛、分散剂和溶剂的混合物来制备分散体,其中基本上不使溶剂从反应体系中离开。在一个实施例中,制备了2重量%的二氧化钛分散体。该二氧化钛显示锐钛矿和金红石型晶相并具有152nm的平均粒径。分散剂,即草酸和草酸铵,在钛氧化物分散体组合物中的量是0.1mol/1mol钛氧化物。
尽管关于二氧化钛的光催化活性有许多现有技术的文献,但是仍然需要改进提供二氧化钛的方法。
因此本发明的目的是提供一种包括二氧化钛的分散体,它具有高固体含量,具有低粘度并且除了光催化活性金属氧化物组分之外,不含任何其它无机组分。而且,所述分散体应该在室温下可倾倒并且对于沉积和稠化应该稳定至少一个月。基于分散体的涂层应提供通常透明、均匀的涂层。
本发明的另一目的是提供一种分散体的制备方法。
本发明涉及一种水分散体,该分散体含有二氧化钛、水、至少一种氨基醇和至少一种羟基羧酸,所述二氧化钛以具有70-100nm的体积平均聚集体直径的初级颗粒的聚集体的形式存在,并且在所述分散体中,
-二氧化钛的比例是25-50重量%,
-氨基醇的比例是2.5-6.5μmol/m2二氧化钛的比表面积,
-羟基羧酸的比例是1-3μmol/m2比表面积,和
-氨基醇/羟基羧酸之比以mol/mol计是2-3。
氨基醇在所述分散体中的比例优选是3-6μmol/m2二氧化钛的比表面积。
优选,羟基羧酸在所述分散体中的比例是1.5-2.5μmol/m2二氧化钛的比表面积。
而且,氨基醇/羟基羧酸之比以mol/mol计可以优选是1.9-2.6。
特别优选可以是这样的本发明的分散体,其中所述氨基醇以3-6μmol/m2二氧化钛的比表面积的比例存在于所述分散体中,并且所述羟基羧酸以1.5-2.5μmol/m2二氧化钛的比表面积的比例存在于所述分散体中,而且氨基醇/羟基羧酸之比以mol/mol计是1.9-2.6。
本发明的分散体中水的比例可以优选是48-73重量%。
特别优选二氧化钛、水、氨基醇和羟基羧酸的含量总共是至少98重量%的分散体。
分散体中存在的二氧化钛可以通过沉降法、溶胶凝胶法或热解法制得。可以优选使用热解制得的二氧化钛。热解应理解为是指一种可以通过火焰水解或火焰氧化获得的粉。由此制得的粉由烧结在一起并且在反应期间首先形成的初级颗粒的聚集体组成。许多聚集体随后可以形成聚结块。由于反应条件,热解制得的粉仅有非常低的表面孔隙率并且在表面具有不超过5OH/nm2的羟基。
本发明的分散体中存在的二氧化钛粉可以金红石或锐钛矿形式存在或者以这两种形式的混合物存在。使用热解制得的二氧化钛粉,通常存在金红石和锐钛矿改性。锐钛矿/金红石之比可以在2∶98-98∶2的范围内。可以特别优选70∶30-95∶5的范围。锐钛矿具有比金红石低的硬度。另一方面金红石具有较高的折射率和较好的气候稳定性。
由于金红石和锐钛矿的不同性质,根据本发明,可以制备特定应用的分散体。因此,当对紫外光的稳定性是重要的时,可以优选使用富含金红石的分散体。当低磨损是重要的时,可以使用富含锐钛矿的分散体。
而且,本发明的分散体中可以存在具有窄初级颗粒分布的热解制得的二氧化钛粉。这种粉的特征在于BET表面积为20-200m2/g;初级颗粒分布的半高全宽FWHH,以纳米计,为按照式FWHH=a×BETf的值,其中a=670x109m3/g和-1.3≤f≤-1.0;直径大于45μm的颗粒的比例在0.0001-0.05重量%的范围内。德国专利申请DE-A-102004055165中描述了所述粉的制备。
为了本发明的目的,热解制得的二氧化钛粉还包括掺杂的二氧化钛粉或者金属氧化物/二氧化钛混合氧化物粉,其中在每种情况下至少一部分掺杂组分或金属氧化物组分存在于表面上。特别是,铝、硅、铈、铁、铜或锆的氧化物适宜作为掺杂组分和金属氧化物组分。掺杂组分或金属氧化物组分的比例,以所述粉为基础,可以优选是10ppm-20重量%之间。
而且,本发明的分散体也可以含有热解制得的金属氧化物粉,该金属氧化物粉接着用二氧化钛涂层包围。
然而,为了本发明的目的,优选包括二氧化钛作为唯一组分的粉。它们可以是,例如,BET表面积为约50m2/g的AeroxideP25(Degussa)和BET表面积为约90m2/g的AeroxideP90(Degussa)。
特别优选其中二氧化钛粉具有50±15m2/g或90±15m2/g的比表面积的本发明的分散体。
在含有比表面积为50±15m2/g的二氧化钛粉的分散体的情况下,二氧化钛含量优选是40±5重量%。
在为含有比表面积为90±15m2/g的二氧化钛粉的分散体的情况下,二氧化钛含量优选是30±3重量%。
而且,如果本发明的分散体具有聚集体直径的单峰分布(monomodal distribution),这意味着在聚集体直径分布的分析中仅产生一个信号,则可能是有益的,。
而且,如果通过测定分散体中的粒径分布的光散射常规方法,例如,动态(例如Malvern Zetasizer)或静态光散射(例如Horiba LA-910),在本发明的分散体中不能检测到大于200nm的颗粒,那么可能是有益的。
所用氨基醇优选具有3-5个碳原子。它们可以优选选自单乙醇胺、二乙醇胺、三乙醇胺、单异丙醇胺、二异丙醇胺、三异丙醇胺、N,N-二甲基异丙醇胺、3-氨基-1-丙醇、1-氨基-2-丙醇和/或2-氨基-2-甲基-1-丙醇,特别优选2-氨基-2-甲基-1-丙醇。
所用羟基羧酸优选具有4-6个碳原子。它们可以优选选自苹果酸、酒石酸和/或柠檬酸,特别优选柠檬酸。
本发明的分散体可以任选含有至少一种防腐剂。合适的防腐剂可以是:2-甲基异噻唑啉-3-酮(MIT)和苯并异噻唑啉酮(BIT)、MIT/BIT和2-溴-2-硝基丙烷-1,3-二醇、3(2H)-5-氯-2-甲基异噻唑酮(methylisothiazolone)(CIT)/MIT的含水制剂;基于二羟甲基脲或三羟甲基脲、甲酰胺甲基醇(formamidemethylol)、多聚甲醛的甲醛供体;溴硝丙二醇、次氮基二溴丙酰胺、1,3-二(羟基甲基)-5,5-二甲基乙内酰脲或六氢三嗪类。
基于制剂总量,防腐剂通常以0.5-5重量%的量存在。在本发明的分散体中,基于分散体的总量,可以存在0.05-0.4重量%的所述制剂。
得自食品行业的防腐剂,例如,山梨酸/碱金属山梨酸盐、丙酸、苯甲酸/碱金属苯甲酸盐、PHB酯和碱金属亚硫酸盐,也可以存在于本发明的分散体中,以分散体的总量为基础,经常以0.1-0.5重量%的比例存在。
本发明的特别优选的分散体的特征在于所述二氧化钛是BET表面积为50±5m2/g的热解二氧化钛、所述氨基醇是2-氨基-2-甲基-1-丙醇和所述羟基羧酸是柠檬酸,并且
-二氧化钛的比例是40±5重量%,
-2-氨基-2-甲基-1-丙醇的比例是3-3.5μmol/m2二氧化钛的比表面积,
-柠檬酸的比例是1.6-1.8μmol/m2比表面积,和
-水的比例是55-59重量%,
-2-氨基-2-甲基-1-丙醇/柠檬酸之比以mol/mol计是1.9-2.1。
本发明的另一优选分散体是这样的:其中所述二氧化钛是BET表面积为90±5m2/g的热解二氧化钛、所述氨基醇是2-氨基-2-甲基-1-丙醇和所述羟基羧酸是柠檬酸,并且
-二氧化钛的比例是30±3重量%,
-2-氨基-2-甲基-1-丙醇的比例是5-5.5μmol/m2二氧化钛的比表面积,
-柠檬酸的比例是1.95-2.15μmol/m2比表面积,和
-水的比例是65-68重量%,
-2-氨基-2-甲基-1-丙醇/柠檬酸之比以mol/mol计是2.4-2.6。
本发明还涉及本发明的分散体的制备方法,其中如下物质的混合物
-25-50重量%的二氧化钛粉,
-2.5-6.5μmol的氨基醇/m2二氧化钛的比表面积,
-1.5-3μmol的羟基羧酸/m2二氧化钛的比表面积,
-氨基醇/羟基羧酸之比以mol/mol计是1.5-3,和
-首先加入水,
-通过引入小于1000kJ/m3的能量来制备预分散体,
-将所述预分散体分成至少两个部分流,使这些部分流在高能磨粉机中经受至少500bar的压力,经喷嘴排出并使所述部分流在填充气体或液体的反应空间彼此接触并任选加入防腐剂。
用于制备预分散体的合适分散设备,例如,是转子/定子机或齿盘。
在一个优选实施方式中,压力是至少2000bar。而且,使分散体经过几次高能粉碎加工可能是有益的。
本发明还涉及本发明的分散体用于玻璃和陶瓷和金属表面的涂层,特别是透明涂层的用途。
实施例
原材料:
如下制备用于实施例3和4的二氧化钛粉:
用于实施例3的二氧化钛粉:
将160kg/h的TiCl4在蒸发器中于140℃蒸发。通过15m3(S.T.P.)/h的氮作为载气将蒸汽转移到混合室中,所述载气具有15g/m3载气的载气湿度。由此分别将52m3(S.T.P.)/h的氢和525m3(S.T.P.)/h的一次空气加入到混合室中。在中心管中,将反应混合物加入到燃烧器中并点燃。火焰在水冷火焰管中燃烧。此外,将200m3(S.T.P.)/h的二次空气加入到反应空间。将形成的粉在下游过滤器中分离然后用空气和蒸汽于520℃逆流处理。
二氧化钛粉具有以下物理化学性能:BET表面积48m2/g、初级颗粒的半高全宽11.0nm、锐钛矿的比例89%。
用于实施例4的二氧化钛粉:
将40kg/h的TiCl4在蒸发器中于140℃蒸发。通过15m3(S.T.P.)/h的氮作为载气将蒸汽转移到混合室中,所述载气具有6g/m3载气的载气湿度。由此分别将67m3(S.T.P.)/h的氢和550m3(S.T.P.)/h的一次空气加入到混合室中。在中心管中,将反应混合物加入到燃烧器中并点燃。火焰在水冷火焰管中燃烧。此外,将200m3(S.T.P.)/h的二次空气加入到反应空间。将形成的粉在下游过滤器中分离然后用空气和蒸汽于520℃逆流处理。
二氧化钛粉具有以下物理化学性能:BET表面积91m2/g、初级颗粒的半高全宽4.8nm、锐钛矿的比例90%。
制备本发明的分散体的常规方法:
首先加入柠檬酸和水。与二氧化钛粉的加入量成比例地加入氨基醇,以获得可流动的预分散体。为此目的,在剪切条件下经Ystral Conti-TDS3的吸入管将二氧化钛粉吸入,并在吸入结束时,再在3000rpm下继续剪切15分钟。
使所述预分散体经两个通道通过压力为2500bar的高能SuginoUltimaizer HJP-25050,并通过直径为0.3mm的钻石喷嘴。
表1显示了按照常规方法进行的实施例的原材料及其量。而且,表1含有所获得的分散体的物理化学数据。
实施例1的颗粒的体积平均聚集体直径是75nm。在其表面上和其上方不能检测到更粗的颗粒。
实施例5和6显示氨基醇和羧酸对于本发明的分散体的制备是必不可少的。如果省去一种组分,那么结果是高粘度的不均匀的预分散体,而这不适合进一步粉碎。
实施例7和8显示氨基醇和羧酸的量对于获得本发明的分散体是至关重要的。在这些实施例的每一个中,一个组分的量在权利要求的范围之外。预分散体的所得粘度不可能在高能磨粉机中进一步加工。
而且,高能粉碎对于获得本发明的分散体是必需的。如果如实施例1所述选择原材料,但是进行低能粉碎,那么获得高粘度的分散体,其稳定性低并且平均聚集体粒径大于150nm。
实施例1-4的本发明的分散体显示极低粘度值以及优异的稳定性。
Claims (22)
1.水分散体,其特征在于所述水分散体含有二氧化钛、水、至少一种氨基醇和至少一种羟基羧酸,所述二氧化钛以体积平均聚集体直径为70-100nm的初级颗粒的聚集体的形式存在,并且在所述分散体中,
-二氧化钛的比例是25-50重量%,
-氨基醇的比例是2.5-6.5μmol/m2二氧化钛的比表面积,
-羟基羧酸的比例是1-3μmol/m2比表面积,和
氨基醇/羟基羧酸之比以mol/mol计是2-3。
2.如权利要求1的分散体,其特征在于所述氨基醇以3-6μmol/m2二氧化钛的比表面积的比例存在于所述分散体中。
3.如权利要求1或2的分散体,其特征在于所述羟基羧酸以1.5-2.5μmol/m2二氧化钛的比表面积的比例存在于所述分散体中。
4.如权利要求1-3任意项的分散体,其特征在于氨基醇/羟基羧酸之比以mol/mol计是1.9-2.6。
5.如权利要求1的分散体,其特征在于所述氨基醇以3-6μmol/m2二氧化钛的比表面积的比例存在于所述分散体中,并且所述羟基羧酸以1.5-2.5μmol/m2二氧化钛的比表面积的比例存在于所述分散体中,而且氨基醇/羟基羧酸之比以mol/mol计是1.9-2.6。
6.如权利要求1-5任意项的分散体,其特征在于水以48-73重量%的比例存在于所述分散体中。
7.如权利要求1-6任意项的分散体,其特征在于二氧化钛、水、氨基醇和羟基羧酸的含量是至少98重量%。
8.如权利要求1-7任意项的分散体,其特征在于所述二氧化钛是热解制得的二氧化钛。
9.如权利要求1-8任意项的分散体,其特征在于所述二氧化钛具有70∶30-90∶10的锐钛矿/金红石之比。
10.如权利要求1-9任意项的分散体,其特征在于所述二氧化钛的BET表面积是50±5m2/g。
11.如权利要求10的分散体,其特征在于所述分散体中所述二氧化钛的含量是40±5重量%。
12.如权利要求1-9任意项的分散体,其特征在于所述二氧化钛的BET表面积是90±10m2/g。
13.如权利要求12的分散体,其特征在于二氧化钛在所述分散体中的比例是30±3重量%。
14.如权利要求1-13任意项的分散体,其特征在于所述氨基醇具有3-5个碳原子。
15.如权利要求1-14任意项的分散体,其特征在于所述羟基羧酸具有4-6个碳原子。
16.如权利要求1-15任意项的分散体,其特征在于水以48-73重量%的比例存在于分散体中。
17.如权利要求1-16任意项的分散体,其特征在于二氧化钛、水、氨基醇和羟基羧酸的含量是至少98重量%。
18.如权利要求1-17任意项的分散体,其特征在于所述分散体含有至少一种防腐剂。
19.如权利要求1的水分散体,其特征在于所述二氧化钛是BET表面积为50±5m2/g的热解二氧化钛,所述氨基醇是2-氨基-2-甲基-1-丙醇,并且所述羟基羧酸是柠檬酸,并且
-二氧化钛的比例是40±5重量%,
-2-氨基-2-甲基-1-丙醇的比例是3-3.5μmol/m2二氧化钛的比表面积,
-柠檬酸的比例是1.6-1.8μmol/m2比表面积,和
-水的比例是55-59重量%,
-2-氨基-2-甲基-1-丙醇/柠檬酸之比以mol/mol计是1.9-2.1。
20.如权利要求1的水分散体,其特征在于所述二氧化钛是BET表面积为90±5m2/g的热解二氧化钛,所述氨基醇是2-氨基-2-甲基-1-丙醇并且所述羟基羧酸是柠檬酸,并且
-二氧化钛的比例是30±3重量%,
-2-氨基-2-甲基-1-丙醇的比例是5-5.5μmol/m2二氧化钛的比表面积,
-柠檬酸的比例是1.95-2.15μmol/m2比表面积,和
-水的比例是65-68重量%,
-2-氨基-2-甲基-1-丙醇/柠檬酸之比以mol/mol计是2.4-2.6。
21.如权利要求1-20任意项的分散体的制备方法,其特征在于下面物质的混合物:
-25-50重量%的二氧化钛粉,
-2.5-6.5μmol氨基醇/m2二氧化钛的比表面积,
-1.5-3μmol羟基羧酸/m2二氧化钛的比表面积,
-氨基醇/羟基羧酸之比以mol/mol计是1.5-3,和
-最初加入水,
-通过引入小于1000kJ/m3的能量来产生预分散体,
-将所述预分散体分成至少两个部分流,使这些部分流在高能磨粉机中经受至少500bar的压力,经喷嘴排出并使所述部分流在填充气体或液体的反应空间彼此接触,并且任选加入防腐剂。
22.如权利要求1-20任意项的分散体的用途,所述分散体用于玻璃、陶瓷和金属表面的涂层。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006057903A DE102006057903A1 (de) | 2006-12-08 | 2006-12-08 | Titandioxid enthaltende Dispersion |
DE102006057903.8 | 2006-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101195498A true CN101195498A (zh) | 2008-06-11 |
Family
ID=38596842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA2007100022123A Pending CN101195498A (zh) | 2006-12-08 | 2007-01-12 | 含二氧化钛的分散体 |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN101195498A (zh) |
DE (1) | DE102006057903A1 (zh) |
TW (1) | TW200833415A (zh) |
WO (1) | WO2008068062A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102224251B (zh) * | 2008-12-09 | 2014-06-11 | 株式会社钟化 | 聚-3-羟基烷酸的凝集体的制备方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2395558A1 (de) * | 2010-06-11 | 2011-12-14 | Kuraray Europe GmbH | Photovoltaikmodule mit reflektierenden Klebefolien geringer Verfärbungsneigung |
DE102011075918A1 (de) * | 2011-05-16 | 2012-11-22 | Evonik Degussa Gmbh | Auf organischem Lösungsmittel basierende Metalloxid-Dispersion |
DE102011114363A1 (de) | 2011-09-27 | 2013-03-28 | Kronos International, Inc. | Stabile nanopartikuläre Suspension und Verfahren zur Herstellung |
JP7106770B2 (ja) * | 2019-12-12 | 2022-07-26 | 昭和電工株式会社 | 高耐熱性アナターゼ型酸化チタン及びその製造方法 |
CN116425418A (zh) * | 2023-06-05 | 2023-07-14 | 佛山市陶莹新型材料有限公司 | 一种抗菌卫生陶瓷 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5824145A (en) * | 1997-05-14 | 1998-10-20 | E. I. Du Pont De Nemours And Company | Method for making a photodurable aqueous titanium dioxide pigment slurry |
EP1127844B1 (en) * | 1998-08-19 | 2012-08-01 | Showa Denko K.K. | Finely particulate titanium-containing substance, coating fluid containing the same, processes for producing these, and molded article having thin film comprising the substance |
DE102004037118A1 (de) * | 2004-07-30 | 2006-03-23 | Degussa Ag | Titandioxid enthaltende Dispersion |
-
2006
- 2006-12-08 DE DE102006057903A patent/DE102006057903A1/de not_active Withdrawn
-
2007
- 2007-01-12 CN CNA2007100022123A patent/CN101195498A/zh active Pending
- 2007-08-28 WO PCT/EP2007/058930 patent/WO2008068062A1/en active Application Filing
- 2007-08-31 TW TW096132484A patent/TW200833415A/zh unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102224251B (zh) * | 2008-12-09 | 2014-06-11 | 株式会社钟化 | 聚-3-羟基烷酸的凝集体的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
DE102006057903A1 (de) | 2008-06-12 |
WO2008068062A1 (en) | 2008-06-12 |
TW200833415A (en) | 2008-08-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI333969B (en) | Dispersion containing titanium dioxide | |
Ismail et al. | Mesoporous titania photocatalysts: preparation, characterization and reaction mechanisms | |
KR100604298B1 (ko) | 산화세륨 분말 | |
KR100674496B1 (ko) | 초미세 기공을 갖는 다공성의 나노 미립자 이산화티탄광촉매 및 안료의 제조방법 | |
TWI490037B (zh) | 光觸媒及其製造方法、與使用其之光觸媒塗佈劑、光觸媒分散體、光觸媒體 | |
US20050271578A1 (en) | Particulate titanium oxide, method and apparatus for manufacturing the same, and treatment methods using such titanium oxide | |
JP5519022B2 (ja) | 安定したサブミクロンレベルのチタニアゾル | |
CN101195498A (zh) | 含二氧化钛的分散体 | |
JP2006131458A (ja) | 酸化チタン粒子粉末及び光触媒 | |
CN1157334C (zh) | 微粒状氧化钛、其制造方法以及氧化钛组合物 | |
JP2004315356A (ja) | 針状酸化チタン微粒子、その製造方法及びその用途 | |
JP3978636B2 (ja) | 光触媒膜形成用コーティング組成物 | |
JP2007117999A (ja) | 酸化チタン系光触媒とその用途 | |
US20150284257A1 (en) | Method for producing titanium oxide particles, titanium oxide particles, and ink composition containing titanium oxide particles | |
JP4296533B2 (ja) | 窒素酸化物除去性能にすぐれた酸化チタン光触媒 | |
JP4724416B2 (ja) | 分散液およびコーティング液 | |
CN100582323C (zh) | 氧化钛粒子及其制造方法、制造装置以及使用该氧化钛的处理方法 | |
Liu et al. | The use of waste SNCR catalysts to produce a nano-TiO2 photo-catalyst and to degrade wastewater from the dye making industry | |
AU2012100633B4 (en) | Stable sub-micron titania sols | |
Smitha et al. | Sol-gel derived functional coatings of titania-silica-lanthanum phosphate nanocomposite | |
JP2006346527A (ja) | チタニア/粘土複合多孔体の製造方法 | |
Qi | Synthesis of hightemperature stable titania nanoparticles for photocatalytic applications |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080611 |