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Catalytic Performance of γ-Al2O3–ZrO2–TiO2–CeO2 Composite Oxide Supported Ni-Based Catalysts for CO2Methanation

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(1)

Catalytic Performance of γ-Al

2

O

3

–ZrO

2

–TiO

2

–CeO

2

Composite

Oxide Supported Ni-Based Catalysts for CO

2

Methanation

Authors

Salvatore Abate, Chalachew Mebrahtu, Emanuele Giglio, Fabio Deorsola, Samir Bensaid, Siglinda Perathoner, Raffaele Pirone, Gabriele Centi

Publication date

2016/4/27

Journal

Industrial & Engineering Chemistry Research

Volume 55 Issue 16 Pages 4451-4460 Publisher

American Chemical Society

Description

Composite oxide supported Ni-based catalysts were prepared by a wet impregnation technique and applied to the methanation of carbon dioxide. The composite oxide supports were prepared by an impregnation–precipitation method using commercial γ-Al2O3 powder as

a host with variation of the percentage of loading of ZrO2, TiO2, and CeO2 promoters from

their respective salt precursors. NH4OH was used as the precipitating agent. The as-prepared

catalysts were characterized by Brunauer–Emmet–Teller surface area analysis, atomic absorption spectroscopy, X-ray diffraction, temperature-programmed reduction by H2 (H2

-TPR), and CO chemisorption. Catalytic activity of the newly synthesized catalysts was investigated toward hydrogenation of CO2 at atmospheric pressure by varying reaction

temperature between 250 and 400 °C (with increasing step equal to 25 °C). Experimental results revealed that the …

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