Development of Nanoalloy Catalysts for Realization of Carbon-Neutral Energy Cycles

Miho Yamauchi; Minako Heima; Masaaki Sadakiyo

doi:10.4028/www.scientific.net/MSF.783-786.2046

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Development of Nanoalloy Catalysts for Realization...

Development of Nanoalloy Catalysts for Realization of Carbon-Neutral Energy Cycles

Abstract:

Increase of CO₂ concentration in the atmosphere is one of reasons for the global warming. Development of energy circulation systems, which do not emit CO₂ in the atmosphere, is an emergent issue for present-generation scientists [1]. As an answer, we have proposed a new type of energy circulation system, namely, carbon-neutral energy (CN) cycle. With a practical application in mind, three limitations are imposed on the CN cycle; (1) no CO₂emissions, (2) utilization of liquid fuels and (3) minimizing the use of precious metal catalysts. In anticipation of a practical use in the near future, an alkaline fuel cell will be adapted for the CN cycle where non-platinum catalysts can work. For our purpose, electric power will be generated by partial oxidation of alcohols to carboxylic acids.[2] In view of ease in handling, fuels having a high boiling point (b.p.) are favorable for the CN cycles. To this end, glycol (EG) of which b.p. is 470 K an ideal candidate as a fuel. In this case, an oxidized product of EG can be oxalic acid. Compared to the energy obtained by the complete oxidation of EG into CO₂, we can derive ca. 80 % of energy even in the partial oxidation of EG to oxalic acid, implying that the EG/oxalic cycle possibly works as an energy cycle. We herein show an example of selective EG oxidation catalysts working in alkaline conditions.

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Materials Science Forum (Volumes 783-786)

Pages:

2046-2050

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.2046

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Online since:

May 2014

Authors:

Miho Yamauchi*, Minako Heima, Masaaki Sadakiyo

Keywords:

Alkaline Fuel Cell, Carbon-Neutral Energy Cycle, Ethylene Glycol, Nanoalloys, Oxalate

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References

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