Site items in: Hydrogen Purification

Presentation

Ammonia Decomposition and Separation Using Catalytic Membrane Reactors

Sai P. Katikaneni Stephen N. Paglieri Aadesh X. Harale Aqil Jamal Koichi Eguchi Hiroki Muroyama Toshiaki Matsui

Hydrogen is the primary fuel source for fuel cells. However, the low volume density and difficulty in storing and transporting hydrogen are major obstacles for its practical utilization. Among various hydrogen carries, ammonia is one of the most promising candidates because of its high hydrogen density and boiling point and ease in liquefaction and transportation. The reaction temperature of ammonia cracking into nitrogen and hydrogen is about 500˚C or higher. The hydrogen can be effectively separated by the membrane based on Pd alloy about 500˚C. Currently, the extraction of hydrogen from ammonia is carried out by two step process involving…

Article

HIAlba-IDEA: think tank launches in Scotland to deploy CSIRO technology, become green energy exporter

Trevor Brown April 04, 2019

NEWS BRIEF: A new policy think tank was launched last month that will focus on "why and how Scotland could benefit from being an early adopter of renewable hydrogen." Its "core starting point" is CSIRO's hydrogen-purification membrane, which enables ammonia to be used and exported as an efficient hydrogen carrier; for this use, green ammonia would be produced from offshore wind. According to the founders, this could lead to "Scotland becoming one of the largest global energy exporters in the world ... it could be the country’s main source of energy and create a knowledge economy."

Presentation

Ammonia-to-Hydrogen System for FCEV Refuelling

Michael Dolan

Ammonia can play a significant role in fuelling the world’s growing fuel cell electric vehicle (FCEV) fleet through technologies which allow the decomposition of NH3, and subsequent extraction and purification of H2. CSIRO has recently demonstrated a pilot-scale ammonia-to-hydrogen system, incorporating an ammonia decomposition stage with a subsequent membrane-based hydrogen purification stage, at a rate of several kilograms of H2 per day. Through partnerships with an industrial gas producer and two FCEV manufacturers, the resulting H2 has been compressed and dispensed into FCEVs. System design, materials, performance and strategies for scale-up and demonstration will be discussed.

Presentation

Catalytic Membrane Reactors for Efficient Delivery of High Purity Hydrogen from Ammonia Decomposition

Zhenyu Zhang Simona Liguori J. Douglas Way Colin A. Wolden

The deployment of fuel cell electric vehicles is constrained by the paucity of hydrogen fueling stations and price, which is dominated by the costs of hydrogen storage and transportation. With more hydrogen per volume than liquid H2 and an extensive distribution infrastructure in place, ammonia is a promising vector for efficient hydrogen distribution. In this talk we describe the development of innovative catalytic membrane reactor (CMR) technology for the delivery of high purity H2 from ammonia cracking. The CMR integrates state-of-the art catalysts with thin metal membranes in an innovative design. Conventionally, the catalyst is supplied to CMRs in the…

Presentation

Ammonia As a Hydrogen Carrier for PEM Fuel Cells

Yoshitsugu Kojima

Ammonia (NH3) is easily liquefied by compression at 1 MPa and 25°C, and has highest volumetric hydrogen density of 10.7 kg H2 /100L. It has high gravimetric hydrogen density of 17.8 wt%. The heat of formation of NH3 is about 1/10 of combustion heat of hydrogen. NH3 has advantages as a hydrogen carrier for fuel cell vehicles (FCVs). ISO 14687-2:2012 specifies the quality characteristics of hydrogen fuel. The maximum concentration of NH3 and N2 for the FCVs is 0.1ppm and 100 ppm, respectively. The minimum H2 purity is 99.97%. We need component technologies to produce high-purity hydrogen from ammonia, together…

Article

Sawafuji Moves toward Commercialization of NH3-to-H2 System

Stephen H. Crolius June 14, 2018

On May 28 Sawafuji Electric Company issued a press release detailing advances made over the last year on the ammonia-to-hydrogen conversion technology it has been jointly developing with Gifu University. The main area of progress is the rate of hydrogen generation, but the key takeaway from the announcement is that Sawafuji has set a schedule that culminates in product commercialization in 2020.