Extracoordination sensitivity of tetraphenylporphyrin complexes to gaseous ammonia |
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| Authors: | L P Maslov V D Rumyantseva S B Lobanova A I Belogorokhov S P Kobeleva |
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| Institution: | (1) M. V. Lomonosov Moscow State Academy of Fine Chemical Technology, 86 prosp. Vernadskogo, 117571 Moscow, Russian Federation;(2) State Scientific Center “GIREDMET”, 5 B. Tolmachevskii per., 109017 Moscow, Russian Federation |
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| Abstract: | The sensitivity of metal tetraphenylporphyrin complexes MTPP (M = PtII, PtIVCl2, ReIVO; TPP is tetraphenylporphyrin) to gaseous ammonia was studied. The gas sensitivity of MTPP is due to the heterogeneous catalytic oxidation of ammonia with the dioxygen ligands in the composition of MTPP. The influence of water vapor on the electrophysical properties of the surface layer of the complexes during adsorption of water and its participation in reactions of the coordinated ammonia and dioxygen were found. Empirical equations relating the conductivity of the MTPP surface layer to the content of water vapor and the concentration of gaseous ammonia were found.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2069–2074, October, 2004. |
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| Keywords: | tetraphenylporphyrin complexes gas sensitivity of metal porphyrins coordination of ammonia and dioxygen |
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