Platinum reaction with

When hydrochloric acid solutions of noble metal salts are being tested, the presence of silver salts need not be considered. Gold chloride can be removed by shaking the strong hydrochloric acid solution with ether or ethyl acetate. The gold-free aqueous solution should be taken to dryness to remove the excess hydrochloric acid before the test with / -nitroso-diphenylamine is tried. There is as yet no method for the removal of platinum which is suitable for the spot test technique. Since the identification limit of the platinum reaction with />-nitrosodiphenylamine is 10 y, the palladium test just given is not impaired by small amounts of platinum. 

Ersoy, D.A., McNallan, M.J., and Gogotsi, Y. Platinum reactions with carbon coatings produced by high temperature chlorination of silicon carbide. Journal of the Electrochemical Society 148, C774-C779, 2001. 

Trevor D J, Whetten R L, Cox D M and Kaldor A 1985 Gas-phase platinum cluster reactions with benzene and several hexanes evidence of extensive dehydrogenation and size-dependent chemisorption J. Am. Chem. Soc. 107 518... 

Reaction with Hydrogen and Metals. Bromine combines directiy with hydrogen at elevated temperatures and this is the basis for the commercial production of hydrogen bromide [10036-10-6]. Heated charcoal and finely divided platinum metals are catalysts for the reaction (17). 

Another group of reactions with the predominant cleavage of the ring comprises catalytic hydrogenation of isoxazole derivatives and has been investigated only recently. The most commonly used catalyst has been Raney nickel,but use has sometimes been made of platinum catalysts. Hydrogenolysis of the 0—N bond (172—>173) occurs in isoxazole, its homologs,and their functional derivatives, for example, isoxazole carboxylic acids- and 5-aminoisoxazoles. ... 

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