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Preparation and Characterization of Ni/ZrTiAlO x Catalyst via Sol-Gel and Impregnation Methods for Low Temperature Dry Reforming of Methane.

Authors :
Shin, Seol A
Alizadeh Eslami, Ali
Noh, Young Su
Song, Hyun-tae
Kim, Hyun Dong
Ghaffari Saeidabad, Nasim
Moon, Dong Ju
Source :
Catalysts (2073-4344); Nov2020, Vol. 10 Issue 11, p1335, 1p
Publication Year :
2020

Abstract

Recently, the dry reforming of methane (DRM) has received much attention as a conversion technology of greenhouse gases. Ni-based catalysts supported on ternary metal oxide composite (ZrTiAlO<subscript>x</subscript>) were prepared to improve the coke resistance properties in the DRM (CH<subscript>4</subscript>:CO<subscript>2</subscript> = 1) at low temperature. The ZrTiAlO<subscript>x</subscript> supports with different ratios of Zr/Ti were prepared through the modified Pechini sol-gel method, and then the Ni was impregnated on the synthesized support via the incipient wetness impregnation method. Considering the Zr/Ti ratios, different catalytic activity and durability in the DRM were identified. The Ni/ZrTiAlO<subscript>x</subscript> catalyst with Zr/Ti of 2 exhibited enhanced coke inhibition property compared to the others at low temperature DRM for 50 h. The catalysts with a high Zr/Ti ratio under the same condition were rapidly deactivated, while the catalyst with a low Zr/Ti ratio showed deficient activity. It was found from temperature-programmed surface reactions (TPSR) and DRIFTS (Diffuse Reflectance Infrared Fourier Transform Spectroscopy) analysis that the addition of Ti has led in to higher catalytic stability at Zr/Ti = 2, which could be as a result of oxygen vacancies generated by the ternary metal oxides. Ni/ZrTiAlO<subscript>x</subscript> catalyst with ratio of Zr/Ti = 2 showed high stability and good catalytic activity towards DRM for the production of syngas. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20734344
Volume :
10
Issue :
11
Database :
Complementary Index
Journal :
Catalysts (2073-4344)
Publication Type :
Academic Journal
Accession number :
147262888
Full Text :
https://doi.org/10.3390/catal10111335