by Staff Writers
Tokyo, Japan (SPX) Dec 02, 2016
Waseda University researchers have developed a new method for producing hydrogen, which is fast, irreversible, and takes place at much lower temperature using less energy. This innovation is expected to contribute to the spread of fuel cell systems for automobiles and homes.
Hydrogen has normally been extracted from methane and steam using a nickel catalyst at temperatures of over 700C. However, the high temperature creates major challenges for widespread use.
The group led by Professor Yasushi Sekine, Waseda University Faculty of Science and Engineering, developed a method which allows hydrogen extraction at temperatures as low as 150~200C. This shift greatly reduces energy input needed to produce hydrogen fuel, extends catalyst life, reduces the cost of construction materials, and reduces complexity of heat-management (cooling) systems.
Although the research group had already seen that a fast reaction would be possible even in the range of 150~200C by applying a weak electric field (surface protonics), the mechanism had not been fully understood.
In this research, the group is the first to explain the mechanism by observing the catalyst during reaction. Protons move quickly through water adsorbed on the catalyst's surface, and protons' surface "hopping" allows reaction to proceed at low temperatures. Furthermore, the collision of the protons and the adsorbates prevents reversal of the reaction.
As momentum grows for the commercialization of hydrogen, this research is not only applicable to hydrogen production, but also to many consumer products since the same mechanism makes it possible to lower the temperature for various reactions involving hydrogen or water.
The process is already being applied to research for improving energy efficiency in automobiles by creating reactions between exhaust gases and fuel at low temperature.
This research will be published in Scientific Reports, by Nature Publishing Group, under the title "Surface Protonics Promotes Catalysis."
Powering The World in the 21st Century at Energy-Daily.com
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement|