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2014 | 12 | 12 | 1285-1293
Tytuł artykułu

AlZn based Co and Ni catalysts for the partial oxidation of bioethanol - influence of different synthesis procedures

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The catalytic performance of Co and Ni catalysts on AlZn mixed oxide supports depends on the synthesis procedure used for their preparation. For this study CoAlZn and NiAlZn catalysts were prepared by conventional sol-gel synthesis of the mixed oxide and subsequent impregnation of the support with the transition metal (SG = sol gel method) as well as by a single-step method were a gel is formed based on salts of all components using citric acid as chelating agent (CM = citrate method). The structure and morphology of the catalysts were characterized by nitrogen sorption, XRD and TPR measurements. They showed high activity in the partial oxidation of ethanol at 600–750 °C, but their properties depend on the preparation method. The higher performance of the catalysts prepared by the citrate method, where the transition metal is incorporated into the crystal structure of the support during preparation, is based on a change in morphology and structure, resulting in more active sites exposed on the surface. Compared to the Co catalysts, Ni catalysts showed a higher performance. This might be due to the higher reducibility and the smaller Ni particles size, which allows a better interaction with the support in NiAlZn catalysts.
Wydawca

Czasopismo
Rocznik
Tom
12
Numer
12
Strony
1285-1293
Opis fizyczny
Daty
wydano
2014-12-01
online
2014-06-07
Twórcy
autor
autor
  • Leibniz Institute for Catalysis (LIKAT)
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-014-0573-8
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