xov xwm

Titanium tetraisopropanolate(Tetraisopropyl Titanate), CAS 546-68-9, yog ib qho tseem ceeb ntawm cov organotitanium compound thiab siv dav hauv kev lag luam, kev tshawb fawb txog cov ntaub ntawv thiab lwm yam. Tam sim no cia peb saib cov khoom no.

Cov ntaub ntawv yooj yim

Cov khoom tseem ceeb ntawm lub cev thiab tshuaj lom neeg

Qhov tsos thiab mobNyob rau hauv chav tsev kub, nws yog ib tug tsis muaj xim rau daj ntseg daj kua pob tshab nrog ib tug pungent tsw (zoo ib yam li cawv los yog ethers).

Kev yaj tauYooj yim yaj rau hauv cov kuab tshuaj organic, nws ua rau muaj zog heev nrog dej - nws yuav hydrolyze sai sai los ua titanium dioxide (TiO₂) precipitate thiab isopropyl cawv ((CH₃)₂CHOH), yog li nws yuav tsum khaws cia thiab siv rau hauv qhov chaw qhuav.

Kub taw tes thiab melting taw tesLub kub npau yog kwv yees li 220-224 ℃ (ntawm qhov siab ib txwm), thiab lub kub yaj yog kwv yees li 14 ℃ (nws yuav khov qis dua 14 ℃ thiab tuaj yeem yaj dua thaum cua sov).

Kev Ruaj Khov: Rhiab rau huab cua, nws yooj yim nqus cov dej noo ntawm huab cua thiab dhau los ua hydrolysis. Nws tuaj yeem lwj thaum kub siab thiab tso cov pa roj uas ua rau khaus.

Cov kev siv tseem ceeb

Daim ntawv thov ntawm titanium tetraisopropanolate yog nyob ntawm nws peb lub ntsiab lus tseem ceeb: yooj yim hydrolysis los tsim titanium dioxide, zoo organic compatibility, thiab catalytic activity. Titanium tetraisopropanolate yog siv dav hauv ntau qhov chaw xws li cov khoom siv synthesis, industrial catalysis, coatings, thiab adhesives. Cov xwm txheej thov tshwj xeeb yog raws li nram no.

I. Kev Sib Txuas Lus Txog Cov Khoom Siv: Lub hauv paus ua "titanium dioxide precursor"

Qhov no yog daim ntawv thov tseem ceeb ntawm titaniumiv Isopropox IDE. Los ntawm kev siv nws cov tshuaj hydrolysis, cov ntaub ntawv titanium dioxide (TiO₂) ntawm ntau hom thiab cov khoom sib txawv tuaj yeem npaj tau raws li ntau yam kev xav tau.

Kev npaj ntawm nano-titanium dioxide

Titanium (IV) isopropoxideyog yaj rau hauv cov organic solvent los ntawm "sol-gel method", thiab tom qab ntawd maj mam hydrolyzed nyob rau hauv cov xwm txheej tswj tau (kho pH, kub, thiab hydrolysis tus nqi) los tsim ib qho "sol". Tom qab ntxiv ziab thiab calcination, nano-scale titanium dioxide hmoov lossis zaj duab xis tau txais. Hom nano-tio ₂ no muaj thaj chaw tshwj xeeb thiab kev ua haujlwm zoo heev, thiab tuaj yeem siv rau:

Cov ntaub ntawv Photocatalytic: kho cov dej phwj (ua kom cov pa phem organic puas tsuaj), ua kom huab cua huv (ua kom cov formaldehyde thiab VOCs lwj);

Cov tshuaj pleev thaiv hnub: Titanium tetraisopropanolate ua tus neeg sawv cev tiv thaiv hnub lub cev (nano-tio₂ tuaj yeem cuam tshuam cov duab ultraviolet, muaj pob tshab siab thiab tsis hloov dawb);

Cov ntaub ntawv Optoelectronic: Titanium tetraisopropanolate rau kev npaj cov txheej txheem nqus lub teeb ntawm lub hnub ci cell thiab cov zaj duab xis nyias ua haujlwm ntawm cov khoom siv tso saib kua siv lead ua kua.

Cov txheej txheem ua haujlwm ntawm cov khoom siv ceramic thiab iav

Titanium (IV) isopropoxide yog sib xyaw nrog lwm cov khoom ntxiv (xws li cov neeg sawv cev silane coupling) los tsim cov tshuaj pleev xim, uas tom qab ntawd txau lossis tsau rau ntawm qhov chaw ntawm cov khoom siv ceramics thiab iav. Tom qab cua sov thiab kho, TiO₂ tsim los ntawm kev hydrolysis ntawm tetraisopropyl titanate tsim cov txheej pob tshab nrog qhov nyuaj siab, tiv taus kub siab thiab tiv taus hnav, uas tuaj yeem:

Txhim kho qhov tsis kam ntawm cov xim ntawm cov tais diav ceramic thiab cov khoom siv hauv chav dej (txo qhov kev nplaum ntawm cov roj stains);

Txhim kho qhov khawb tsis kam ntawm cov iav (xws li lub xov tooj ntawm tes tiv thaiv iav, iav tsheb);

Muab lub iav nrog lub luag haujlwm "tus kheej ntxuav" (siv cov khoom photocatalytic ntawm TiO₂ los rhuav tshem cov hmoov av thiab cov xim av ntawm qhov chaw).

Kev tsim cov ntaub ntawv ua haujlwm raws li titanium

Ua ib qho chaw titanium, nws teb rau kev sib koom ua ke nrog lwm cov ntsev hlau (xws li cov ntsev txhuas thiab cov ntsev zirconium) los npaj cov titanium-aluminium composite oxides, titanium-zirconium cov khoom khov kho thiab lwm yam khoom siv, uas yog siv rau hauv cov khoom siv kub siab thiab cov khoom siv catalyst (txhawm rau txhim kho kev ruaj khov thiab thaj chaw tshwj xeeb ntawm cov khoom siv).

II. Kev Lag Luam Catalysis: Cov tshuaj tiv thaiv organic catalytic zoo

Kev cia siab rau qhov muaj peev xwm sib koom tes ntawm lub hauv paus titanium atom (Ti⁴⁺), Titanium IV Isopropox IDE cas 546-68-9 yog ib qho catalyst zoo heev rau ntau yam kev tshuaj tiv thaiv organic, tshwj xeeb tshaj yog rau cov xwm txheej uas xav tau kev xaiv siab thiab kev tshuaj tiv thaiv sab qis:

Cov tshuaj catalysts rau esterification thiab transesterification reactions

Thaum synthesizing polyester resins (xws li PET thiab PBT), hloov cov tshuaj catalysts acidic ib txwm muaj (xws li sulfuric acid) tuaj yeem ua kom cov tshuaj esterification ntawm carboxylic acids thiab cawv sai dua, txo cov khoom by-products (xws li dehydration ntawm cawv), thiab cov catalyst yooj yim cais tawm ntawm cov khoom, yog li txhim kho qhov huv ntawm cov resin.

Titaniumiv isopropoxide cas 546-68-9ua rau cov tshuaj tiv thaiv transesterification (xws li cov tshuaj tiv thaiv ntawm cov esters qis dua nrog cov cawv siab dua los tsim cov esters siab dua) hauv kev tsim cov tsw qab thiab cov tshuaj tsw qab thiab cov tshuaj nruab nrab, txhim kho kev ua haujlwm ntawm cov tshuaj tiv thaiv thiab cov khoom tsim tawm.

Kev xaiv catalysis hauv cov organic synthesis

Titanium tetraisopropanolate, ua lub hauv paus ntawm "titanium catalytic system" (xws li ua ke nrog tartrate esters), yog siv rau hauv cov tshuaj tiv thaiv asymmetric epoxidation (rau kev tsim cov chiral epoxides, cov tshuaj tseem ceeb);

titanium (IV) isopropoxide ua rau cov tshuaj tiv thaiv aldol condensation thiab tswj cov qauv ntawm cov khoom kom meej, ua rau nws tsim nyog rau kev lag luam tshuaj zoo.

III. Kev Siv Tshuaj Pleev Xim thiab Cov Khoom Siv Nplaum: Txhim kho kev ua haujlwm ntawm cov ntaub ntawv

Los ntawm kev siv nws qhov "organic-inorganic bridge" feature (ib kawg sib txuas nrog cov khoom inorganic thiab lwm qhov kawg sib txuas nrog cov khoom organic), qhov kev nplaum thiab kev ruaj khov ntawm cov txheej thiab cov nplaum tuaj yeem txhim kho:

Kev lag luam txheej: Cov neeg sawv cev sib txuas thiab cov neeg txhawb nqa kev nplaum

Ntxiv me ntsis tetraisopropyl titanate rau acrylic coatings thiab polyurethane coatings, pawg isopropoxy tuaj yeem cuam tshuam nrog cov hydroxyl (-OH) thiab carboxyl (-COOH) pawg hauv txheej los tsim cov qauv sib txuas, yog li ua kom muaj kev tiv thaiv huab cua (UV laus tiv taus), tiv thaiv dej thiab tawv ntawm txheej.

Tshuaj pleev xim rau cov hlau xws li hlau thiab txhuas alloy, txhawb kev nplaum ntawm cov txheej rau ntawm cov hlau thiab txo cov txheej tev tawm thiab xeb.

Kev lag luam nplaum: Txhim kho lub zog sib txuas

Titanium tetraisopropanolate yog siv ua "tus neeg sawv cev txuas" hauv cov nplaum epoxy resin thiab cov nplaum silicone. Ib kawg cuam tshuam nrog cov pab pawg hydroxyl ntawm qhov chaw ntawm cov khoom inorganic xws li hlau thiab ceramics, thiab lwm qhov kawg hla-txuas nrog cov organic polymer saw ntawm cov nplaum. Txhim kho qhov muaj zog sib txuas thiab noo noo thiab cua sov tiv taus ntawm cov nplaum rau cov ntaub ntawv inorganic (xws li rau kev ntim khoom thiab kev sib txuas ntawm cov khoom siv hluav taws xob).

IV. Lwm yam hom phiaj tshwj xeeb

Kev kho qhov chaw hlau

Titanium tetraisopropanolate yog siv rau kev kho qhov chaw ntawm txhuas thiab magnesium alloys. TiO₂ tsim los ntawm hydrolysis ntawm tetraisopropyl titanate tsim cov zaj duab xis passivation sib xyaw nrog oxide ntawm qhov chaw hlau, txhim kho qhov kev tiv thaiv corrosion ntawm cov hlau (hloov cov chromate passivation ib txwm muaj thiab ua rau ib puag ncig zoo dua).

Kev npaj cov ntaub ntawv kho qhov muag

Los ntawm kev siv tshuab "chemical vapor deposition (CVD)", cov pa ntawm tetraisopropyl titanate raug coj mus rau hauv chav tshuaj tiv thaiv, qhov twg nws decomposes ntawm qhov chaw ntawm lub substrate (xws li quartz iav) los tsim TiO₂ zaj duab xis, uas yog siv los npaj cov lim dej kho qhov muag thiab cov txheej tiv thaiv kev cuam tshuam (rau kev tswj hwm lub teeb transmittance).

Kev lag luam textile: Cov neeg ua haujlwm tiav

Titanium (IV) isopropoxidecuam ​​tshuam nrog cov pab pawg hydroxyl ntawm qhov chaw ntawm cov ntaub textile los tsim cov zaj duab xis TiO₂ ntawm qhov chaw fiber, ua rau cov ntaub muaj cov khoom tua kab mob (siv cov nyhuv photocatalytic bactericidal ntawm TiO₂) thiab UV tsis kam (xws li hauv cov ntaub tiv thaiv hnub sab nraum zoov).