Determination of acid-base surface properties of mercarbide

Kiba S.A. , Kapustina E.V. , Kozlovskiy R.A. , Kapustin A.E.

2013 / Номер 2 [ Органический и неорганический синтез ]

Mercarbide, [CHg 4 O 2 ](OH) 2 , is a mercury derivative of methane in which all of the methane hydrogen atoms are substituted by mercury atoms. Mercarbide exhibits basic and anion exchange properties in addition to showing unique stability towards mineral acids as well as oxidizing and reducing agents.The selectivity of mercarbide towards organic anions shows selectivity dependence on the size and configuration of the pen- dant hydrocarbon group. In this study characterization and surface basicity of mercarbide were investigated with Hammett basicity functions, the benzoic acid titration method, with direct acid-base titration with mineral acid and with ion- exchange with alcoxides. Mercarbide has a basic strength of H 0 > 15,0, Bronsted sites predominate on the surface of mercarbide.

Ключевые слова:

mercarbide; basicity functions; ion-exchange.

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