NDLI: Carbon dioxide reforming of methane over bimetallic catalysts of Pt-Ru/γ-Al$_{2}$O$

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Carbon dioxide reforming of methane over bimetallic catalysts of Pt-Ru/γ-Al$_{2}$O$_{3}$ for thermochemical energy storage

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Carbon dioxide reforming of methane over bimetallic catalysts of Pt-Ru/γ-Al$_{2}$O$_{3}$ for thermochemical energy storage

Content Provider	Springer Nature Link
Author	Du, Juan Yang, Xiao xi Ding, Jing Wei, Xiao lan Yang, Jian ping Wang, Wei long Yang, Min lin
Copyright Year	2013
Abstract	The reaction of CO$_{2}$ reforming of CH$_{4}$ has been investigated with γ-Al$_{2}$O$_{3}$-supported platinum and ruthenium bimetallic catalysts, with the specific purpose of thermochemical energy storage. The catalysts were prepared by using the wetness impregnation method. The prepared catalysts were characterized by a series of physico-chemical characterization techniques such as BET surface area, thermo-gravimetric (TG), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). In addition, the amount of carbon deposits on the surface of the catalysts and the type of the carbonaceous species were discussed by TG. It was found that the bimetallic Pt-Ru/γ-Al$_{2}$O$_{3}$ catalysts exhibit both superior catalytic activity and remarkable stability by comparison of monometallic catalysts. During the 500 h stability test, the bimetallic catalyst showed a good performance at 800 °C in CO$_{2}$ reforming of CH$_{4}$, exhibiting an excellent anti-carbon performance with the mass loss of less than 8.5%. The results also indicate that CO$_{2}$ and CH$_{4}$ have quite stable conversions of 96.0 % and 94.0 %, respectively. Also, the selectivity of the catalysts is excellent with the products ratio of CO/H$_{2}$ maintaining at 1.02. Furthermore, it was found in TEM images that the active carbonaceous species were formed during the catalytic reaction, and well-distributed dot-shaped metallic particles with a relatively uniform size of about 3 nm as well as amorphous carbon structures were observed. Combined with BET, TG, TEM tests, it is concluded that the selected bimetallic catalysts can work continuously in a stable state at the high temperature, which has a potential to be utilized for the closed-loop cycle of the solar thermochemical energy storage in future industry applications.
Starting Page	1307
Ending Page	1313
Page Count	7
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	20
Issue Number	5
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2013-05-04
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	carbon dioxide reforming of methane Pt-Ru/γ-Al$_{2}$O$_{3}$ catalysts long-term stability thermochemical energy storage Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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