Uranyl acetate, decomposition

Thorium phthalocyanine is prepared by heating the metal (previously etched with HC1) and o-phthalonitrile, 1 25, at 270 to 300°C for 5 hr. The dark blue product is cooled to room temperature, washed with benzene, and purified twice by sublimation at 520°C and 10 4Torr. The protactinium-233 produced by w-irradiation of pure thorium phthalocyanine is separated in high purity in the residue after repeated sublimation of the thorium phthalocyanine. The thorium-231 produced by (w,2w) reaction in the thorium phthalocyanine is found to be enriched in the residue after sublimation, indicating decomposition of the phthalocyanine by irradiation. Uranyl phthalocyanine is prepared by heating a mixture of uranyl acetate and phthalonitrile at 230 to 240°C. 

The fusion of uranium oxides with alkali or alkaline earth carbonates, or thermal decomposition of salts of the uranyl acetate anion, gives orange or yellow materials generally referred to as uranates, for example,... 

The solid products obtained from the decomposition of uranyl acetate [39] in nitrogen and in air were UOj+x (with some 5% carbon) and U3O8, respectively. The... 

Nanocrystals of BaTiO, are obtained by the thermal decomposition of MOeVD reagents (alkoxides such as BaTifOiCCjHis) [OCH(CH,),],) in diphenyl ether containing oleic acid, followed by the oxidation of the product with HjOi. Thermal decomposition of uranyl acetylacetonate in a mixture solution of oleic acid, oieylamine, and octadecene at 423 K gives uranium oxkle nanocrystals. Treatment of metal acetylacetonates under solvothermal conditions produces nanocrystals of metal oxides such as GajOj, ZnO and cubic lujOs. Nearly monodisperse InjOj nanocrystals have been obtained starting with indium acetate, oieylamine and oleic acid. TiOj nanocrystals can be prepared... 

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