The degree of hydration of the γ-Al2O3 surface governs (a) the type of interaction between phthalocyaninato cobalt(II), [Co(pc)], and γ-Al2O3; (b) the activation of [Co(pc)] towards O2 reduction; (c) the fixation of O2- to Al3+ centres. Thermal, spectroscopic and spectromagnetic analyses show that: (a) the complex [Co(pc)] interacts with the support, as expected for a basic molecule fixed to an acidic surface; (b) O 2 is reduced by the cobalt complex; (c) the initial stage of interaction between γ-Al2O3[Co(pc)] and O 2 is formation of the adduct [Co(pc)]O2 on the γ-Al2O3 surface, followed by O2- fixation on the Al3+ centres. Competition exists between [Co(pc)] and Al3+ as for O2- coordination.

Mercati, G., Morazzoni, F., Barzaghi, M., Carniti, P., Ragaini, V., Campadelli, F. (1979). OXYGEN-CHEMISORPTION BY GAMMA-AL2O3 PHTHALOCYANINATO COBALT(II) - INFLUENCE OF THE SURFACE SPECIES GAMMA-AL2O3 ON O-2(-) FIXATION. JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS I, 75, 1857-1867 [10.1039/f19797501857].

OXYGEN-CHEMISORPTION BY GAMMA-AL2O3 PHTHALOCYANINATO COBALT(II) - INFLUENCE OF THE SURFACE SPECIES GAMMA-AL2O3 ON O-2(-) FIXATION

MORAZZONI, FRANCA;
1979

Abstract

The degree of hydration of the γ-Al2O3 surface governs (a) the type of interaction between phthalocyaninato cobalt(II), [Co(pc)], and γ-Al2O3; (b) the activation of [Co(pc)] towards O2 reduction; (c) the fixation of O2- to Al3+ centres. Thermal, spectroscopic and spectromagnetic analyses show that: (a) the complex [Co(pc)] interacts with the support, as expected for a basic molecule fixed to an acidic surface; (b) O 2 is reduced by the cobalt complex; (c) the initial stage of interaction between γ-Al2O3[Co(pc)] and O 2 is formation of the adduct [Co(pc)]O2 on the γ-Al2O3 surface, followed by O2- fixation on the Al3+ centres. Competition exists between [Co(pc)] and Al3+ as for O2- coordination.
Articolo in rivista - Articolo scientifico
OXYGEN-CHEMISORPTION, alumina, PTHALOCYANINATO COBALT(II),
English
1979
75
1857
1867
none
Mercati, G., Morazzoni, F., Barzaghi, M., Carniti, P., Ragaini, V., Campadelli, F. (1979). OXYGEN-CHEMISORPTION BY GAMMA-AL2O3 PHTHALOCYANINATO COBALT(II) - INFLUENCE OF THE SURFACE SPECIES GAMMA-AL2O3 ON O-2(-) FIXATION. JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS I, 75, 1857-1867 [10.1039/f19797501857].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/32699
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