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26. Liquid Organic Hydrogen Carrier Concepts and Catalysts for Hydrogenation and Dehydrogenation Reactions.

Author

Cabrera, Gerardo, Mora, Malka, Gil-Burgos, Juan P., Visbal, Renso, Machuca-Martínez, Fiderman, and Mosquera-Vargas, Edgar

Subjects
HYDROGEN production, CATALYST supports, WATER electrolysis, INDUSTRIAL chemistry, LIQUID hydrogen, ELECTRONIC spreadsheets, RUTHENIUM catalysts, SOLAR technology
Abstract

Background: The issue of renewable energy (RE) source intermittency, such as wind and solar, along with the geographically uneven distribution of the global RE potential, makes it imperative to establish an energy transport medium to balance the energy demand and supply areas. A promising energy vector to address this situation is hydrogen, which is considered a clean energy carrier for various mobile and portable applications. Unfortunately, at standard pressure and temperature, its energy content per volume is very low (0.01 kJ/L). This necessitates alternative storage technologies to achieve reasonable capacities and enable economically viable long-distance transportation. Among the hydrogen storage technologies using chemical methods, liquid organic hydrogen carrier (LOHC) systems are considered a promising solution. They can be easily managed under ambient conditions, the H2 storage/release processes are carbon-free, and the carrier liquid is reusable. However, the evolution of the proposals from the carrier liquid type and catalyst elemental composition point of view is scarcely studied, considering that both are critical in the performance of the system (operational parameters, kinetic of the reactions, gravimetric hydrogen content, and others) and impact in the final cost of the technology deployed. The latter is due to the use of the Pt group elements (PGEs) in the catalyst that, for example, have a high demand in the hydrogen production sector, particularly for polymer electrolyte membrane (PEM) water electrolysis. With that in mind, our objective was to examine the evolution and the focus of the research in recent years related to proposals of LOHCs and catalysts for hydrogenation and dehydrogenation reactions in LOHC systems which can be useful in defining routes/strategies for new participants interested in becoming involved in the development of this technology. Data sources: For this systematic review, we searched the SCOPUS database and forward and backward citations for studies published in the database between January 2011 and December 2022. Eligibility criteria: The criteria include articles which assessed or studied the effect of the type of catalyst, type of organic liquid, reactor design(s)/configuration(s), and modification of the reactor operational parameters, among others, over the performance of the LOHC system (de/hydrogenation reaction(s)). Data extraction and analysis: The relevant data from each reviewed study were collected and organized into a pre-designed table on an Excel spreadsheet, categorized by reference, year, carrier organic liquid, reaction (hydrogenation and/or dehydrogenation), investigated catalyst, and primary catalyst element. For processing the data obtained from the selected scientific publications, the data analysis software Orbit Intellixir was employed. Results: For the study, 233 studies were included. For the liquid carrier side, benzyltoluene and carbazole dominate the research strategies. Meanwhile, platinum (Pt) and palladium (Pd) are the most employed catalysts for dehydrogenation reactions, while ruthenium (Ru) is preferred for hydrogenation reactions. Conclusions: From the investigated liquid carrier, those based on benzyltoluene and carbazole together account for over 50% of the total scientific publications. Proposals based on indole, biphenyl, cyclohexane, and cyclohexyl could be considered to be emerging within the time considered in this review, and, therefore, should be monitored for their evolution. A great activity was detected in the development of catalysts oriented toward the dehydrogenation reaction, because this reaction requires high temperatures and presents slow H2 release kinetics, conditioning the success of the implementation of the technology. Finally, from the perspective of the catalyst composition (monometallic and/or bimetallic), it was identified that, for the dehydrogenation reaction, the most used elements are platinum (Pt) and palladium (Pd), while, for the hydrogenation reaction, ruthenium (Ru) widely leads its use in the different catalyst designs. Therefore, the near-term initiatives driving progress in this field are expected to focus on the development of new or improved catalysts for the dehydrogenation reaction of organic liquids based on benzyltoluene and carbazole. [ABSTRACT FROM AUTHOR]

Published
2024
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42. Contributors

Author

Abdullah, Bawadi, primary, Abdullah, Sureena, additional, Ahmed, Abrar Zadeed, additional, Al Natour, Rawan, additional, Alenazey, Feraih, additional, AlSabeh, Ghewa, additional, Alsaffar, May Ali, additional, Altan, Orhan, additional, Amaniampong, Prince Nana, additional, Ansari, Khursheed B., additional, Anusuyadevi, Prasaanth Ravi, additional, Ayodele, Bamidele Victor, additional, Ayoub, Muhammad, additional, Baduri, Swarnendu, additional, Bhattacharya, Chinmoy, additional, Binh, Nguyen Thanh, additional, Choudhury, Biswajit, additional, Dang, Tuan Thanh, additional, Diaz-Angulo, Jennyfer, additional, Do, Ha Huu, additional, Do, Huu-Tuan, additional, Douma, Fatima, additional, El-Roz, Mohamad, additional, Eroğlu, Zafer, additional, Findik, Fehim, additional, Ghosh, Sangeeta, additional, González-Casamachin, Diego A., additional, Güy, Nuray, additional, Hajra, Paramita, additional, Hamoud, Houeida Issa, additional, Hang, Dinh Thi Thuy, additional, De Haro-Del Río, David A., additional, Hmadeh, Mohamad, additional, Iqbal, Farukh, additional, Jaiswal, Manju Kumari, additional, Kaneco, Satoshi, additional, Kim, Soo Young, additional, Küçükkeçeci, Hüseyin, additional, Kumar, Abhinandan, additional, Kumar, Anupam, additional, Kumar, Deepak, additional, Kwao-Boateng, Emmanuela, additional, Lara-Ramos, Jose A., additional, Van Le, Quyet, additional, Lucio-Ortiz, Carlos J., additional, Machuca-Martínez, Fiderman, additional, McCormick, Wesley, additional, McCrudden, Denis, additional, Metin, Önder, additional, Moharana, Aiswarya, additional, Molla, Md. Ashraful Islam, additional, Mustapa, Siti Indati, additional, Nanda, Sonil, additional, Nasrallah, Houssein, additional, Nath, Manash Pratim, additional, Nguyen, Ba-Son, additional, Nguyen, Chinh Chien, additional, Nguyen, Dang Le Tri, additional, Nguyen, Dinh Minh Tuan, additional, Nguyen, Thi Le Anh, additional, Nguyen, Trinh Duy, additional, Nguyen, Van Ha, additional, Nguyen, Van-Huy, additional, Oladipo, Habeebllah, additional, Özacar, Mahmut, additional, Panchangam, Sri Chandana, additional, Pang, Xinzhu, additional, Pham, Thanh Huyen, additional, Phan, Pham Thi, additional, Phan, Thi To Nga, additional, Raizada, Pankaj, additional, Ray, Debasish, additional, Rice, Clare, additional, Rivera De la Rosa, Javier, additional, Robertson, Peter K.J., additional, Sariket, Debasis, additional, Sharma, Ajit, additional, Shokouhimehr, Mohammadreza, additional, Singh, Pardeep, additional, Skillen, Nathan, additional, Soni, Vatika, additional, Svagan, Anna J., additional, Thakur, Ankush, additional, Thi, Lan-Anh Phan, additional, Trinh, Quang Thang, additional, Vo, Dai-Viet N., additional, and Yusuf, Mohammad, additional

Published
2021
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