Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress

Rao, Purna Chandra; Yoon, Minyoung

doi:10.3390/en13226040

Cited by 158 publications

(102 citation statements)

References 89 publications

Supporting

Mentioning

100

Contrasting

Order By: Relevance

“…As H18-DBT/DBT is the LOHC that has received the most attention in the recent scientific literature, it will be the main LOHC investigated here. More thorough reviews of LOHC technology can be found elsewhere [99][100][101][102][103]. To supply the necessary heat for the dehydrogenation of H18-DBT, around 30% of released H 2 must be combusted [91,104].…”

Section: Liquid Organic Hydrogen Carriersmentioning

confidence: 99%

Application of Liquid Hydrogen Carriers in Hydrogen Steelmaking

Andersson

2021

Energies

View full text Add to dashboard Cite

Steelmaking is responsible for approximately one third of total industrial carbon dioxide (CO2) emissions. Hydrogen (H2) direct reduction (H-DR) may be a feasible route towards the decarbonization of primary steelmaking if H2 is produced via electrolysis using fossil-free electricity. However, electrolysis is an electricity-intensive process. Therefore, it is preferable that H2 is predominantly produced during times of low electricity prices, which is enabled by storage of H2. This work compares the integration of H2 storage in four liquid carriers, methanol (MeOH), formic acid (FA), ammonia (NH3) and perhydro-dibenzyltoluene (H18-DBT), in H-DR processes. In contrast to conventional H2 storage methods, these carriers allow for H2 storage in liquid form at ambient moderate overpressures, reducing the storage capacity cost. The main downside to liquid H2 carriers is that thermochemical processes are necessary for both the storage and release processes, often with significant investment and operational costs. The carriers are compared using thermodynamic and economic data to estimate operational and capital costs in the H-DR context considering process integration options. It is concluded that the use of MeOH is promising compared to both the other considered carriers. For large storage volumes, MeOH-based H2 storage may also be an attractive option for the underground storage of compressed H2. The other considered liquid H2 carriers suffer from large thermodynamic barriers for hydrogenation (FA) or dehydrogenation (NH3, H18-DBT) and higher investment costs. However, for the use of MeOH in an H-DR process to be practically feasible, questions regarding process flexibility and the optimal sourcing of CO2 and heat must be answered.

show abstract

Section: Liquid Organic Hydrogen Carriersmentioning

confidence: 99%

Application of Liquid Hydrogen Carriers in Hydrogen Steelmaking

Andersson

2021

Energies

View full text Add to dashboard Cite

show abstract

“…The reader is advised to consult these papers to have an overview of the present situation. Newly considered LOHC couples, like e.g., n-(methylbenzyl)pyridine and methylindole appear in even more recent reviews [29]. The review of Modisha et al [30] gathers some useful informations concerning catalysts and reactors but mostly in the case of dibenzyltoluene.…”

Section: Literature Overviewmentioning

confidence: 99%

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

Meille

Pitault

2021

Reactions

View full text Add to dashboard Cite

The term LOHC stands for Liquid Organic Hydrogen Carriers. The term has been so well accepted by the scientific community that the studies published before the existence of this name are not very visible. In this mini-review, we have tried to rehabilitate various studies that deserve to be put back in the spotlight in the present context. Studies indeed began in the early 1980s and many publications have compared the use of various organic carriers, various catalysts and reactors. Recent reviews also include the economic aspects of this concept.

show abstract

“…In general, the high cost of noble metals, and sometimes their insufficient selectivity in the target dehydrogenation reaction, prompts reduction of the use of precious metal catalysts by the introduction of a second metal (Ni, Sn, Mn, etc. [9,[17][18][19][20][21]) and the search for alternative catalytic systems. In particular, non-precious monometallic catalysts based on Ni, Mo, Cu, Ag, Zn, and Sn have been proposed [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Ni–Cu High-Loaded Sol–Gel Catalysts for Dehydrogenation of Liquid Organic Hydrides: Insights into Structural Features and Relationship with Catalytic Activity

et al. 2021

View full text Add to dashboard Cite

The heightened interest in liquid organic hydrogen carriers encourages the development of catalysts suitable for multicycle use. To ensure high catalytic activity and selectivity, the structure–reactivity relationship must be extensively investigated. In this study, high-loaded Ni–Cu catalysts were considered for the dehydrogenation of methylcyclohexane. The highest conversion of 85% and toluene selectivity of 70% were achieved at 325 °C in a fixed-bed reactor using a catalyst with a Cu/Ni atomic ratio of 0.23. To shed light on the relationship between the structural features and catalytic performance, the catalysts were thoroughly studied using a wide range of advanced physicochemical tools. The activity and selectivity of the proposed catalysts are related to the uniformity of Cu distribution and its interaction with Ni via the formation of metallic solid solutions. The method of introduction of copper in the catalyst plays a crucial role in the effectiveness of the interaction between the two metals.

show abstract

Potential Liquid-Organic Hydrogen Carrier (LOHC) Systems: A Review on Recent Progress

Cited by 158 publications

References 89 publications

Application of Liquid Hydrogen Carriers in Hydrogen Steelmaking

Application of Liquid Hydrogen Carriers in Hydrogen Steelmaking

Liquid Organic Hydrogen Carriers or Organic Liquid Hydrides: 40 Years of History

Ni–Cu High-Loaded Sol–Gel Catalysts for Dehydrogenation of Liquid Organic Hydrides: Insights into Structural Features and Relationship with Catalytic Activity

Contact Info

Product

Resources

About