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Digitale Medien

Structure and reactivity of Zn-Cr mixed oxides. Role of non-stoichiometry in the catalytic synthesis of methanol (1989)

Errani, E. ; Trifiro, F. ; Vaccari, A. ; [weitere]

Springer

Catalysis letters 3 (1989), S. 65-72

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ISSN: 1572-879X

Schlagwort(e): Methanol synthesis ; zinc-chromium mixed oxides

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The catalytic behaviour of Zn/Cr mixed oxides with different compositions was investigated as a function of the bulk and surface properties. It was observed that non-stoichiometric spinel-type phases were stable also in the reaction conditions, in which zinc-surface enrichment did not occur. The maximum productivity in methanol was observed for monophasic non-stoichiometric spinel-type samples with a Zn/Cr ratio near to one, whereas the samples richest in zinc, for which a side phase, ZnO also was detected, showed a strong decrease in activity. The catalytic data support the hypothesis that non-stoichiometric spinel is the active phase for the synthesis of methanol on coprecipitated Zn-Cr catalysts.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00765056

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