Green Technologies of Hydrogen and Ammonia Production as Energy Vectors

Dear Colleagues,

In comparison to present fossil fuel-based technologies, researchers are focusing on hydrogen and ammonia as the next generation energy vectors that will be able to supply efficient and environmentally friendly energy. Although hydrogen is the best option for a carbon-free energy source, it has the drawback of having a low volumetric energy density in the gas phase, necessitating a cryogenic storage system with low temperatures (−252.8 ^oC) and high pressures (700 bar). To overcome this disadvantage, researchers are looking for suitable hydrogen storage materials, which must meet and surplus the hydrogen storage criteria set by DOE and ease of hydrogen extraction from the material for feasible commercial application. Ammonia is one of the most potential hydrogen storge materials which fulfills the DOE criteria, and its storage condition is also much safe compared to hydrogen. Furthermore, ammonia production is a mature technology and been used for more than 100 years using the Haber–Bosch process, a route to produce N₂-based fertilizer. Ammonia must undergo catalytic decomposition in order to produce hydrogen, which may then be fed into a fuel cell to produce electricity. One thing to keep in mind is that using fossil fuels to make hydrogen or ammonia is the cheapest option, but doing so results in carbon emissions into the atmosphere. Therefore, the greatest need is for a green way to produce ammonia and hydrogen.

High-caliber papers focusing on the most recent novel developments in theoretical and experimental hydrogen and ammonia decomposition technologies are sought for this Special Issue on "Green Technologies of Hydrogen and Ammonia Production as Energy Vectors". The subject may, but is not restricted to:

• Hydrogen production from fossil fuels or other hydrogen storage materials.
• Green Hydrogen production via water splitting via electrocatalysis and photocatalysis.
• Green ammonia production.
• Ammonia decomposition and Kinetics of ammonia decomposition.
• Reactor design for ammonia decomposition and feasibility analysis.

Prof. Dr. Sharif Fakhruz Zaman
Prof. Dr. Mohammad Ali A. Shoukat Choudhury
Dr. Md. Wasikur Rahman
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• water splitting
• photocatalysis
• electrocatalysis
• NH₃ decomposition
• NH₃ decomposition reactor design
• NH₃ decomposition kinetics