Tetraisopropyl orthotitanate

Abbreviations p, ratio between ionic radii of cation and anion TBHP, rm-butyl hydroperoxide EBHP, ethylbenzene hydroperoxide PO, propylene oxide TBOT, tetrabutyl orthotitanate TEOT, tetraethyl orthotitanate TIOT, tetraisopropyl orthotitanate TEOS, tetraethyl orthosilicate THF, tetrahydrofuran TPA-OH, tetrapropylammonium hydroxide TMOS, tetramethyl orthosilicate TBA-OH, tetrabutylammonium hydroxide TBP-OH, tetrabutylphophonium hydroxide TEA-OH, tetraethylammonium hydroxide TMA-OH, tetramethylammonium hydroxide. 

Frequently used precursors are TiCl4 titanium alkoxides Ti(OR)4 such as tetraethyl orthotitanate (TEOT) and tetraisopropyl orthotitanate (TIOT) sodium... 

FIGURE 7.6 Spherical nanophased titanium hydroxide particles obtained in SC CO2 from hydrolysis and condensation of tetraisopropyl-orthotitanate at 323 K and 30 MPa. 

The original Sharpless reagent, a mixture of tetraisopropyl orthotitan-ate, (i ,/ )-diethyl tartrate, and tert-butyl hydroperoxide in the ratio 1 1 2 in dry dichloromethane or 1,2-dichloroethane [1025, is modified by adding 1 mol of water 224, 1029]. Such a reagent gives higher enantiomeric excesses. Of many sulfide oxidations that have been carried out, the conversion of methyl p-tolyl sulfide into the sulfoxide is shown in equation 565. 

Commercial tetraisopropyl orthotitanate [Ti(O-i-Pr) ] (Dynamit Nobel) and titanium tetrachloride (Fluka pract.) can be used without further purification. The checkers obtained Ti(0-1-Pr)4 from Aldrich Chemical Company, Inc. and titanium tetrachloride from Fluka. Distillation of T1(0-i-Pr)4 did not improve the results. 

Tetraisopropyl orthotitanate Isopropyl alcohol, titanium (4+) salt (8) 2-Propanol, titanium (4+) salt (9) (546-68-9)... 

TETRAISOPROPYL ORTHOTITANATE (546-68-9) Forms explosive mixture with air (flash point 72°F/22°C). Reacts with water, steam, forming vapors that are toxic and flammable. Violent reaction with strong oxidizers. Incompatible with sulfuric acid, nitric acid, caustics, aliphatic amines, isocyanates, boranes. 

Tetraisopropyl orthotitanate Isopropyl alcohol, titanium (4+) salt (8) ... 

Step [86,87,233,234]. Peiro and coworkers [235] recently reported on the synthesis of Ti02 anatase phase with a nanorod morphology (9 x 5mn size) using controlled hydrolysis of tetraisopropyl orthotitanate (TIP) and tetrabutylammonium hydroxide ((TBA)OH) as a steric stabilizing agent. 

TS-1 alumina binder and polystyrene dispersion MFI Tetraisopropyl orthotitanate TEOS TPAOH Calcined TS-1 is mixed with aluminum oxide, formic acid, polystyrene, and water 175 °C, 92 h Muller, 2002 (27)... 

CAS 546-68-9 EINECS/ELINCS 208-909-6 Synonyms IPT Isopropyl alcohol, titanium (4+) salt Isopropyl orthotitanate Isopropyl titanate Isopropyl titanate (IV) Tetraisopropoxide titanium Tetraisopropoxytitanium Tetraisopropyl orthotitanate Tetrakis (isopropoxy) titanium TIPT Titanium (IV) isopropoxide Titanium isopropylate Titanium tetraisopropoxide Titanium telraisopropylate Titanium tetra-n-propoxide TPT Empirical CijHzsOJi Formula Ti[OCH(CH3)2]4... 

Tetraisopropoxide titanium Tetraisopropoxytitanium Tetraisopropyl orthotitanate Tetrakis (isopropoxy) titanium TIPT... 

Titanium(IV) isopropoxide (tetraisopropyl orthotitanate, Fluka Chemika, pract.), hydrochloric acid (Reanal, pro anal.), sodium hydroxide (Reanal, puriss.) and 2-propanol (Reanal, puriss.) were used as received. Similarly, a commercial sample of P25 Degussa Ti02 (25 wt% rutile, 75 wt% anatase) was used as a well-known photocatalytic reference material. Zinc(II) chloride (Reanal, pro anal.), ZnO (Reanal, puriss.), SnCl4-5H20 and Sn02 (Reanal, pro anal.) were used as received. 

As a typical example, Ti02 particles were precipitated onto the surface of poly(vinyl butyral) (PVB) upon hydrolysis of tetraisopropyl orthotitanate and then this Ti02-loaded PVB was carbonized at high temperatures in CO2 gas flow [73]. The two relevant processes, annealing of Ti02 and PVB carbonization, thus proceeded simultaneously. Table 3.5 summarizes the characteristics of the resulting photocatalytic materials. 

In this chapter, MCM-41 andH-MCM l(jc), (content ofTi as wt%,x = 0.15, 0.60,0.85, and 2.00), were synthesized in accordance with previous literature [95], using tetraethyl orthosilicate and tetraisopropyl orthotitanate as the starting materials and cetyltrimethylammonium bromide as the template. After the as-synthesized products were recovered by filtration, washed thoroughly with deionized water, and dried at 373 K for 12 h, calcination of the samples was performed in air at 823 K for 6 h. The titanium content in these materials was determined by atomic absorption analysis. 

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