Platinum-Titanium

Group IV Copper, chromium, nickel, silver, gold, platinum, titanium, cobalt and... 

Sayama, K. and Arakawa, H., Significant effect of carbonate addition on stoichiometric photodecomposition of liquid water into hydrogen and oxygen from platinum-titanium (IV) oxide suspension,/. Chem. Soc., Chem. Commun., 150,1992. 

In this chapter, we will focus on the rhodium-catalyzed hydrogenation of functionalized ketones and the development of chiral phosphorous ligands for this process. Although there are other chiral phosphorous ligands which are effective for ruthenium-, iridium-, platinum-, titanium-, zirconium-, and palladium-catalyzed hydrogenation, they will not be discussed here. For details of these chemistries, the reader should refer to other chapters of this book. 

Finely divided metals (without oxide film) Aluminum, calcium, cobalt, iron, magnesium, manganese, palladium, platinum, titanium, tin, zinc, zirconium... 

That products of intermediate oxidation level can be detected in the photocatalytic reactions of hydrocarbons and fossil fuels is also consistent with a surface bound radical intermediate . Photocatalytic isotope exchange between cyclopentane and deuterium on bifunctional platinum/titanium dioxide catalysts indicates the importance of weakly adsorbed pentane at oxide sites. The platinum serves to attract free electrons, decreasing the efficiency of electron-hole recombination, and to regenerate the surface oxide after exchange. Much better control of the exchange is afforded with photoelectrochemical than thermal catalysis > ) As before, hydrocarbon oxidations can also be conducted at the gas-solid interface... 

Benzeneselenenyl trichloride, 27 Platinum-Titanium, 251 Titanium(IV) chloride-Zinc, 310 Dehydrohalogenation (see Elimination reactions)... 

Platinum Compounds Hydrogen hexachloroplatinate(IV)-Copper(II) chloride, 145 Hydrogen hexachloroplatinate(IV)-Diethoxymethylsilane, 76 Platinum-Titanium, 251 Rhodium Compounds [2,2 -Bis(diphenylphosphine)-l,T-binaphthyl](dimethanol)rhodium(I) perchlorate, 36... 

Platinum-Titanium, 251 Tetrakis(diethylamino)titanium, 115 Titanium, 170 Titanium(III) chloride, 302... 

Other materials exhibit a minute positive magnetic susceptibility of appr. 10 6— 10 2. This phenomenon is called paramagnetism = appr. 10 6-10 2 and occurs because dipoles of atoms or molecules in a material align themselves in a magnetic field. Some examples are Al, oxygen 02, platinum, titanium. The magnetic dipoles in the... 

Use the following list of metals to answer the questions a to i iron, calcium, potassium, gold, aluminium, magnesium, sodium, zinc, platinum, titanium. 

A 5.5 (xm photoresist layer was patterned as the sacrificial layer, followed by the deposition of a second 4.5 p,m parylene layer. The parylene/photoresist/ parylene sandwich structure formed the electrospray nozzle and channel when the photoresist was subsequently dissolved. A 1500 A sputtered aluminum layer was used as a mask for parylene etching to define the shape of the nozzle. Aluminum was removed by a wet etching process. After SU-8 developing, wafers were left inside the SU-8 developer for 2 days to release the photoresist. A serpentine channel (250 pan x 500 pm x 15 mm) extending from the junction of pump channels to the edge of the chip was patterned in the SU-8 layer. Platinum/titanium lines spaced 200 pm apart were patterned under the channel after the electrode deposition step. 

Baker R.T.K., Kim K.S., Emerson A.B., Dumesic J.A. (1986) A Study of the Platinum-Titanium Dioxide System for the Hydrogenation of Graphite Ramifications of Strong Metal-Support Interactions, J. Phys. Chem. 90(5), 860-866. 

The nature of the cathode has been found to have major effect on the efficiency of electrochemical HDH of halogenated compounds. For instance, the HDH of 12 mM chlorobenzene at carbon cloth or lead cathodes gave conversions up to 95% with a current efficiency of 20%, lower conversion and efficiency (<5%) were observed using platinum, titanium or nickel cathodes (Zanaveskin et al. 1996). A 100% electrochemical HDH of 153 ppm 4-chlorophenol to phenol was achieved using a palladium-coated carbon cloth cathode (Balko et al. 1993). Unfortunately, several environmentally unacceptable materials, such as Hg and Pb, have also been used as cathodes (Bonfatti et al. 1999 Kulikov et al. 1996). 

Aromatic hydrocarbons can be oxidatively cleaved either on a side chain or in the ring (Eq. 6) [60]. Even saturated hydrocarbons can be induced to become oxygenated or to participate in isotope exchange on irradiated platinum/ titanium dioxide catalysts [151, 155, 156]. Competitive trapping of the photogenerated conduction band electron by adsorbed protons is thought to be responsible for the reduced contribution of oxygen at lower pH. 

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