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New Ammonia-Reforming Catalyst System
Article

New Ammonia-Reforming Catalyst System

Stephen H. Crolius May 05, 2017

On April 27 the on-line journal Science Advances published “Carbon-free H2 production from ammonia triggered at room temperature with an acidic RuO2/γ-Al2O3 catalyst.” The lead author, Katsutoshi Nagaoka, and his six co-authors are associated with the Department of Applied Chemistry at Oita University in Japan. The innovation featured in the paper could prove to be an important enabler of ammonia fuel in automotive applications.

Power to Ammonia: the Eemshaven case
Article

Power to Ammonia: the Eemshaven case

Trevor Brown April 28, 2017

The Institute for Sustainable Process Technology recently published a feasibility study, Power to Ammonia, looking at the possibility of producing and using ammonia in the renewable power sector. This project is based in The Netherlands and is led by a powerful industrial consortium. I wrote about the feasibility study last month, but it deserves closer attention because it examines three entirely separate business cases for integrating ammonia into a renewable energy economy, centered on three site-specific participants in the study: Nuon at Eemshaven, Stedin at Goeree-Overflakkee, and OCI Nitrogen at Geleen. Over the next few years, the group intends to build pilot projects to develop and demonstrate the necessary technologies. Next month, however, these projects will be an important part of the Power-to-Ammonia Conference, in Rotterdam on May 18-19. This article is the first in a series of three that aims to introduce each business case.

New Technology for Generating Hydrogen from Ammonia
Article

New Technology for Generating Hydrogen from Ammonia

Stephen H. Crolius March 30, 2017

On March 21, Gifu University in Japan announced a breakthrough in technology for generating hydrogen from ammonia. A press release from the Gifu Prefectural Association Press Club stated that Professor Shinji Kambara, Director of the Next Generation Research Center within the Environmental Energy Systems Department at the Gifu University Graduate School of Engineering, has developed a "plasma membrane reactor" that is capable of evolving hydrogen with a purity of 99.999 percent from an ammonia feedstock. This surpasses the 99.97 percent purity announced last July by a research group centered at Hiroshima University with a hydrogen generation device based on a different technology.

ARPA-E's vision for carbon neutral liquid fuels
Article

ARPA-E's vision for carbon neutral liquid fuels

Trevor Brown January 11, 2017

We wrote last month about the US Department of Energy funding ammonia fuel projects through ARPA-E's "REFUEL" program ("Renewable Energy to Fuels through Utilization of Energy-dense Liquids"). Although we introduced the funded projects in both the ammonia synthesis category and the ammonia fuel-use category, the REFUEL project merits further analysis as a whole because it describes a roadmap for the development of ammonia fuel systems, and identifies benchmarks for their commercial success.

REFUEL Ammonia Use-Side Funding Awards
Article

REFUEL Ammonia Use-Side Funding Awards

Stephen H. Crolius December 23, 2016

Six of the projects designated for funding by the ARPA-E REFUEL announcement on December 15 involve technologies on the use side of the ammonia energy space. Three focus on generating hydrogen from ammonia. Two focus on fuel cells that convert ammonia to electricity. One project involves both ammonia synthesis and use.

Coordinated scission of N-H bonds
Article

Coordinated scission of N-H bonds

Trevor Brown November 17, 2016

A paper published in this week's edition of Science outlines a new approach to breaking the hydrogen-nitrogen bonds in ammonia, allowing the production of hydrogen at low temperatures. This research was also reported on phys.org under the headline: "Method found for pulling hydrogen from ammonia for use as clean fuel."

Cracking ammonia
Presentation

Cracking ammonia

Bill DavidJosh MakepeaceHazel HunterThomas Wood

In this talk, I will discuss our latest research in developing novel ammonia cracking catalysts. While ammonia can be used directly as a fuel in high temperature fuel cells, internal combustion engines and gas turbine, the ability to crack ammonia affordably and effectively increases the range of possibilities for utilising ammonia as an energy vector. For example, the production of an ammonia-free hydrogen/nitrogen gas mixture permits the consideration of ammonia as an on-board hydrogen storage option for transportation. Furthermore, the ability to partly crack ammonia provides an increased flexibility for internal combustion engines. I will outline developments in our search…

Applications of hydrogen permeable membranes in ammonia synthesis and decomposition
Presentation

Applications of hydrogen permeable membranes in ammonia synthesis and decomposition

Sean LundinThomas F. FuerstJason GanleyColin A. WoldenJ. Douglas Way

It is well known that ammonia is being considered as a method of storing hydrogen. Although some fuel cells are being developed that can use ammonia directly as a fuel source, many fuel cell technologies still require an outside cracker to revert ammonia back into hydrogen for efficient use. In this regard, hydrogen permeable membranes, such as Pd and its alloys, have been targeted as potential membrane reactors in which the ammonia is cracked while the hydrogen is simultaneously separated. Pd and its alloys are expensive, but offer potentially perfect hydrogen purity that is highly preferable for certain fuel cells…