Selective and mild hydrogen production using water and formaldehyde

Leo E. Heim, Nils E. Schloerer, Jong-Hoo Choi, Martin H. G. Prechtl

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

With the increased efforts in finding new energy storage systems for mobile and stationary applications, an intensively studied fuel molecule is dihydrogen owing to its energy content, and the possibility to store it in the form of hydridic and protic hydrogen, for example, in liquid organic hydrogen carriers. Here we show that water in the presence of paraformaldehyde or formaldehyde is suitable for molecular hydrogen storage, as these molecules form stable methanediol, which can be easily and selectively dehydrogenated forming hydrogen and carbon dioxide. In this system, both molecules are hydrogen sources, yielding a theoretical weight efficiency of 8.4% assuming one equivalent of water and one equivalent of formaldehyde. Thus it is potentially higher than formic acid (4.4 wt%), as even when technical aqueous formaldehyde (37 wt%) is used, the diluted methanediol solution has an efficiency of 5.0 wt%. The hydrogen can be efficiently generated in the presence of air using a ruthenium catalyst at low temperature.
OriginalsprogEngelsk
Artikelnummer3621
TidsskriftNature Communications
Vol/bind5
ISSN2041-1723
DOI
StatusUdgivet - 2014
Udgivet eksterntJa

Citer dette

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title = "Selective and mild hydrogen production using water and formaldehyde",
abstract = "With the increased efforts in finding new energy storage systems for mobile and stationary applications, an intensively studied fuel molecule is dihydrogen owing to its energy content, and the possibility to store it in the form of hydridic and protic hydrogen, for example, in liquid organic hydrogen carriers. Here we show that water in the presence of paraformaldehyde or formaldehyde is suitable for molecular hydrogen storage, as these molecules form stable methanediol, which can be easily and selectively dehydrogenated forming hydrogen and carbon dioxide. In this system, both molecules are hydrogen sources, yielding a theoretical weight efficiency of 8.4{\%} assuming one equivalent of water and one equivalent of formaldehyde. Thus it is potentially higher than formic acid (4.4 wt{\%}), as even when technical aqueous formaldehyde (37 wt{\%}) is used, the diluted methanediol solution has an efficiency of 5.0 wt{\%}. The hydrogen can be efficiently generated in the presence of air using a ruthenium catalyst at low temperature.",
author = "Heim, {Leo E.} and Schloerer, {Nils E.} and Jong-Hoo Choi and Prechtl, {Martin H. G.}",
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Selective and mild hydrogen production using water and formaldehyde. / Heim, Leo E.; Schloerer, Nils E.; Choi, Jong-Hoo; Prechtl, Martin H. G.

I: Nature Communications, Bind 5, 3621, 2014.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Selective and mild hydrogen production using water and formaldehyde

AU - Heim, Leo E.

AU - Schloerer, Nils E.

AU - Choi, Jong-Hoo

AU - Prechtl, Martin H. G.

PY - 2014

Y1 - 2014

N2 - With the increased efforts in finding new energy storage systems for mobile and stationary applications, an intensively studied fuel molecule is dihydrogen owing to its energy content, and the possibility to store it in the form of hydridic and protic hydrogen, for example, in liquid organic hydrogen carriers. Here we show that water in the presence of paraformaldehyde or formaldehyde is suitable for molecular hydrogen storage, as these molecules form stable methanediol, which can be easily and selectively dehydrogenated forming hydrogen and carbon dioxide. In this system, both molecules are hydrogen sources, yielding a theoretical weight efficiency of 8.4% assuming one equivalent of water and one equivalent of formaldehyde. Thus it is potentially higher than formic acid (4.4 wt%), as even when technical aqueous formaldehyde (37 wt%) is used, the diluted methanediol solution has an efficiency of 5.0 wt%. The hydrogen can be efficiently generated in the presence of air using a ruthenium catalyst at low temperature.

AB - With the increased efforts in finding new energy storage systems for mobile and stationary applications, an intensively studied fuel molecule is dihydrogen owing to its energy content, and the possibility to store it in the form of hydridic and protic hydrogen, for example, in liquid organic hydrogen carriers. Here we show that water in the presence of paraformaldehyde or formaldehyde is suitable for molecular hydrogen storage, as these molecules form stable methanediol, which can be easily and selectively dehydrogenated forming hydrogen and carbon dioxide. In this system, both molecules are hydrogen sources, yielding a theoretical weight efficiency of 8.4% assuming one equivalent of water and one equivalent of formaldehyde. Thus it is potentially higher than formic acid (4.4 wt%), as even when technical aqueous formaldehyde (37 wt%) is used, the diluted methanediol solution has an efficiency of 5.0 wt%. The hydrogen can be efficiently generated in the presence of air using a ruthenium catalyst at low temperature.

U2 - 10.1038/ncomms4621

DO - 10.1038/ncomms4621

M3 - Journal article

VL - 5

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

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ER -