Nano-Pd/CeO2 catalysts for hydrogen storage by reversible benzene hydrogenation/dehydrogenation reactions

AbstractToday’s energy concerns require the development of suitable solutions for the storage of energy from renewable resources. Although the chemical storage of energy using molecular hydrogen as energy carrier is one of the best options, this type of energy storage requires the conversion of hydrogen to liquid organic hydrogen careers (LOHCs) for practical reasons. This goal is challenging and highly desirable at the same time. In comparison to dihydrogen, hydrogen storage in LOHCs offers easier handling and minimum dangers involved in their production, storage, and reconversion. To achieve efficient processes based on LOHCs highly active catalyst systems are required which ideally are based on cheap and abundant metals such as iron. This review summarizes recent advances in ironcatalyzed hydrogenation and dehydrogenation reactions, with relevance to reversible hydrogen storage in small molecules. It entails the dehydrogenation reactions of formic acid and methanol water mixtures, the reverse reaction, the hydrogenation of CO2, dehydrogenation of alcohols, and the hydrogenation of different carbonyl compounds as the formal reverse reaction, as well as hydrogenation and dehydrogenation reactions of N-heterocyclic compounds and hydrogen release reactions from amino boranes.

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The Potential of Binary Lithium Magnesium Nitride - LiMgN for Hydrogen Storage Application

MRS Proceedings ◽

10.1557/proc-1042-s05-03 ◽

2007 ◽

Vol 1042 ◽

Author(s):

Jun Lu ◽

Zhigang Zak Fang ◽

Young Joon Choi ◽

Hong Yong Sohn

Keyword(s):

Hydrogen Storage ◽

Hydrogen Pressure ◽

Metal Hydrides ◽

Hydrogenation Process ◽

Potential Candidate ◽

High Hydrogen ◽

Material Systems ◽

Dehydrogenation Reactions ◽

Magnesium Nitride

AbstractMetal hydrides and amides are potential candidate materials for hydrogen storage. Lithium- and magnesium-based material systems are among the most promising materials owing to their high hydrogen contents. In the present work, we investigated hydrogenation/dehydrogenation reactions of a binary nitride, LiMgN. LiMgN can be formed by a reaction of MgH2 with LiNH2 in 1:1 ratio. The reaction also releases approximately ∼ 8.1 wt% H2 (theoretical value is 8.2 wt%) between 160 and 220 °C. The reaction product LiMgN can be rehydrogenated by reacting with H2 under 2000 psi of hydrogen pressure and 160 °C with small amount of TiCl3 doping. TGA results showed that about 8.0 wt% of hydrogen was stored in TiCl3-doped LiMgN during the hydrogenation process. The reversible hydrogenation and dehydrogenation mechanisms involving LiMgN and H2 are discussed.

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Introduction: hydrogen storage as solution for a changing energy landscape

Physical Sciences Reviews ◽

10.1515/psr-2017-0009 ◽

2018 ◽

Vol 4 (1) ◽

Cited By ~ 1

Author(s):

Thomas Zell ◽

Robert Langer

Keyword(s):

Energy Storage ◽

Hydrogen Storage ◽

Nuclear Power ◽

Power Plants ◽

New Technologies ◽

Energy Landscape ◽

Sustainable Technologies ◽

Bulk Energy ◽

Dehydrogenation Reactions ◽

Systems Requirements

Abstract The expansion of sustainable technologies and infrastructures for the production and delivery of energy to the final consumer and the development of new technologies for energy production, storage and distribution, are challenging and inevitable tasks. Power plants based on the combustion of fossil fuel resources or nuclear power plants are not suitable to provide energy in the future due to significant disadvantages and dangers associated with these outdated technologies. The development of new sustainable technologies for the production of energy is desirable. Besides focusing on the production step, the change in global energy landscape requires also new and improved energy storage systems. Requirements for these storage solutions will strongly depend on the application. Storing energy by producing and consuming hydrogen is in this context a very attractive approach. It may be suitable for storage of energy for transportation and also for the bulk energy storage. Due to physical restrictions of high pressure hydrogen storage, alternative techniques are developed. This is, in turn, an ongoing task with multidisciplinary aspects, which combines chemistry, physics, material science and engineering. Herein, we review the production and consumption of energy, different energy storage applications, and we introduce the concept of hydrogen storage based on hydrogenation and dehydrogenation reactions of small molecules.

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CO2-based hydrogen storage – hydrogen liberation from methanol/water mixtures and from anhydrous methanol

Physical Sciences Reviews ◽

10.1515/psr-2017-0014 ◽

2018 ◽

Vol 3 (9) ◽

Cited By ~ 1

Author(s):

Monica Trincado ◽

Matthias Vogt

Keyword(s):

Hydrogen Storage ◽

Heterogeneous Catalysts ◽

Biological Systems ◽

Anhydrous Methanol ◽

Mild Conditions ◽

Production Of Hydrogen ◽

Hydrogen Liberation ◽

Dehydrogenation Reactions ◽

Molecular Catalysts ◽

New Strategies

Abstract New strategies for the reforming of methanol under mild conditions on the basis of heterogeneous and molecular catalysts have raised the hopes and expectations on this fuel. This contribution will focus on the progress achieved in the production of hydrogen from aqueous and anhydrous methanol with molecular and heterogeneous catalysts. The report entails thermal approaches, as well as light-triggered dehydrogenation reactions. A comparison of the efficiency and mechanistic aspects will be made and principles of catalytic pathways operating in biological systems will be also addressed.

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