In:
ECS Transactions, The Electrochemical Society, Vol. 68, No. 1 ( 2015-06-02), p. 2775-2782
Abstract:
The properties of flowerlike microspheres ceria based nickel catalyst for low temperature methane steam reforming (SMR) were studied. The ceria microspheres were prepared by hydrothermal method. Catalyst of nano-sized nickel oxide particles based on flowerlike cerium oxide microspheres with high disperse were prepared to achieve simultaneous dehydrogenation of methane and water molecules on multi-active sites. The catalyst was characterized by means of Scanning Electronic Microscope (SEM), X-ray diffraction (XRD). Results showed that this special catalyst NiO/CeO 2 had high activity and stability for SMR reaction below 600 o C. The stability of the catalyst reached more than 1000 hours. The conversation of methane under 590 o C was above 90%. The tests of the influence of different H 2 O/CH 4 mole ratios on activity and selectivity of catalyst showed that 1.5~2.5 ratios was an ideal choice. During the running of micro-tube methane steam reformer with this catalyst, the methane conversion of 556 o C kept over 25mol.%.
Type of Medium:
Online Resource
ISSN:
1938-5862
,
1938-6737
DOI:
10.1149/06801.2775ecst
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2015