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Jangir J, Jagirdar BR. Bridging Dehydrogenation and Hydrogenation in Heterogeneous Catalysis: A Demonstration of a Unified Catalytic Approach. Chemistry 2024; 30:e202400980. [PMID: 38850253 DOI: 10.1002/chem.202400980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/27/2024] [Accepted: 06/07/2024] [Indexed: 06/10/2024]
Abstract
In the pursuit of enhancing the applications of hydrogen as an energy carrier, this research delved into the utilization of a singular hybrid catalyst capable of performing both dehydrogenation and hydrogenation processes for Liquid Organic Hydrogen Carriers (LOHCs). This study presents the synthesis and characterization of a hybrid catalyst, combining an organometallic pincer complex with Pd-Ru heterostructures supported on γ-alumina. Unlike conventional transition and noble metal nanoparticles, the use of a pincer complex offers exceptional thermal stability due to its aryl backbone, which is advantageous for various endothermic dehydrogenation reactions of hydrocarbons in LOHCs. This pioneering hybrid catalyst is a novel approach, demonstrating a proof of concept. In this study, we utilized the hybrid catalyst to investigate the dehydrogenation and hydrogenation of a lower enthalpic system, specifically the cyclooctane-cyclooctene system. The dehydrogenation of cyclooctane was conducted at 443 K using tertiary butyl ethylene as a sacrificial hydrogen acceptor, while the hydrogenation of cyclooctene reaction catalyzed by Pd-Ru nanostructures occurred at 298 K and 1 atm H2. The results showed successful tandem dehydrogenation-hydrogenation reactions. However, challenges were noted in terms of catalytic activity and recyclability, providing valuable insights for further refinement and optimization.
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Affiliation(s)
- Jyothi Jangir
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560 012, India
| | - Balaji R Jagirdar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560 012, India
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Sadeq AM, Homod RZ, Hussein AK, Togun H, Mahmoodi A, Isleem HF, Patil AR, Moghaddam AH. Hydrogen energy systems: Technologies, trends, and future prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 939:173622. [PMID: 38821273 DOI: 10.1016/j.scitotenv.2024.173622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/27/2024] [Accepted: 05/27/2024] [Indexed: 06/02/2024]
Abstract
This review critically examines hydrogen energy systems, highlighting their capacity to transform the global energy framework and mitigate climate change. Hydrogen showcases a high energy density of 120 MJ/kg, providing a robust alternative to fossil fuels. Adoption at scale could decrease global CO2 emissions by up to 830 million tonnes annually. Despite its potential, the expansion of hydrogen technology is curtailed by the inefficiency of current electrolysis methods and high production costs. Presently, electrolysis efficiencies range between 60 % and 80 %, with hydrogen production costs around $5 per kilogram. Strategic advancements are necessary to reduce these costs below $2 per kilogram and push efficiencies above 80 %. Additionally, hydrogen storage poses its own challenges, requiring conditions of up to 700 bar or temperatures below -253 °C. These storage conditions necessitate the development of advanced materials and infrastructure improvements. The findings of this study emphasize the need for comprehensive strategic planning and interdisciplinary efforts to maximize hydrogen's role as a sustainable energy source. Enhancing the economic viability and market integration of hydrogen will depend critically on overcoming these technological and infrastructural challenges, supported by robust regulatory frameworks. This comprehensive approach will ensure that hydrogen energy can significantly contribute to a sustainable and low-carbon future.
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Affiliation(s)
- Abdellatif M Sadeq
- Qatar University, Mechanical and Industrial Engineering Department, Doha, Qatar.
| | - Raad Z Homod
- Department of Oil and Gas Engineering, Basrah University for Oil and Gas, Basra, Iraq
| | - Ahmed Kadhim Hussein
- College of Engineering, Mechanical Engineering Department, University of Babylon, Babylon City, Hilla, Iraq
| | - Hussein Togun
- Department of Mechanical Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq.
| | - Armin Mahmoodi
- Department of Aerospace Engineering, Carleton University, Ottawa, Ontario, Canada.
| | - Haytham F Isleem
- School of Applied Technologies, Qujing Normal University, Qujing 655011, Yunnan, China.
| | - Amit R Patil
- Mechanical Engineering Department, M. E. S. Wadia College of Engineering, Pune, MH, India
| | - Amin Hedayati Moghaddam
- Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
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Zhao J, Wang D, Zhang L, He M, Ma W, Zhao S. Microwave-enhanced hydrogen production: a review. RSC Adv 2023; 13:15261-15273. [PMID: 37213333 PMCID: PMC10194329 DOI: 10.1039/d3ra01898a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 04/29/2023] [Indexed: 05/23/2023] Open
Abstract
Currently, the massive use of fossil fuels, which still serve as the dominant global energy, has led to the release of large amounts of greenhouse gases. Providing abundant, clean, and safe renewable energy is one of the major technical challenges for humankind. Nowadays, hydrogen-based energy is widely considered a potentially ideal energy carrier that could provide clean energy in the fields of transportation, heat and power generation, and energy storage systems, almost without any impact on the environment after consumption. However, a smooth energy transition from fossil-fuel-based energy to hydrogen-based energy must overcome a number of key challenges that require scientific, technological, and economic support. To accelerate the hydrogen energy transition, advanced, efficient, and cost-effective methods for producing hydrogen from hydrogen-rich materials need to be developed. Therefore, in this study, a new alternative method based on the use of microwave (MW) heating technology in enhanced hydrogen production pathways from plastic, biomass, low-carbon alcohols, and methane pathways compared with conventional heating methods is discussed. Furthermore, the mechanisms of MW heating, MW-assisted catalysis, and MW plasma are also discussed. MW-assisted technology usually has the advantages of low energy consumption, easy operation, and good safety practices, which make it a promising solution to supporting the future hydrogen society.
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Affiliation(s)
- Jun Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Duanda Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Lei Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Minyi He
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Wangjing Ma
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Sui Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China
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Ruiz-López E, Ribota Peláez M, Blasco Ruz M, Domínguez Leal MI, Martínez Tejada M, Ivanova S, Centeno MÁ. Formic Acid Dehydrogenation over Ru- and Pd-Based Catalysts: Gas- vs. Liquid-Phase Reactions. MATERIALS (BASEL, SWITZERLAND) 2023; 16:472. [PMID: 36676208 PMCID: PMC9861380 DOI: 10.3390/ma16020472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Formic acid has recently been revealed to be an excellent hydrogen carrier, and interest in the development of efficient and selective catalysts towards its dehydrogenation has grown. This reaction has been widely explored using homogeneous catalysts; however, from a practical and scalable point of view, heterogeneous catalysts are usually preferred in industry. In this work, formic acid dehydrogenation reactions in both liquid- and vapor-phase conditions have been investigated using heterogeneous catalysts based on mono- or bimetallic Pd/Ru. In all of the explored conditions, the catalysts showed good catalytic activity and selectivity towards the dehydrogenation reaction, avoiding the formation of undesired CO.
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King R, Canty AJ, Ariafard A, O’Hair RAJ, Ryzhov V. Catalytic Dehydrogenation of Liquid Organic Hydrogen Carrier Model Compounds by CpM + (M = Fe, Co, Ni) in the Gas Phase. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Robert King
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois60115, United States
| | - Allan J. Canty
- School of Natural Sciences−Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania7001, Australia
| | - Alireza Ariafard
- School of Natural Sciences−Chemistry, University of Tasmania, Private Bag 75, Hobart, Tasmania7001, Australia
| | - Richard A. J. O’Hair
- School of Chemistry, Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria3010, Australia
| | - Victor Ryzhov
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois60115, United States
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Alekseeva Bykova MV, Gulyaeva YK, Bulavchenko OA, Saraev AA, Kremneva AM, Stepanenko SA, Koskin AP, Kaichev VV, Yakovlev VA. Promoting effect of Zn in high-loading Zn/Ni-SiO 2 catalysts for selective hydrogen evolution from methylcyclohexane. Dalton Trans 2022; 51:6068-6085. [PMID: 35356959 DOI: 10.1039/d2dt00332e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dehydrogenation of methylcyclohexane to toluene was investigated over high-loading monometallic Ni-SiO2 and bimetallic Zn/Ni-SiO2 catalysts. The catalysts were prepared by the impregnation coupled with the advantageous heterophase sol-gel technique. Their performance was tested in a fixed-bed flow reactor at 250-350 °C, 0.1 MPa pressure, equimolar ratio H2/Ar (24 nL h-1 in total), and a methylcyclohexane feed rate of 12 mL h-1. Information regarding the structure of Ni-Zn catalysts was obtained by N2 and CO adsorption, temperature-programmed reduction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, in situ X-ray diffraction, and in situ X-ray absorption spectroscopy. The results have shown that the addition of zinc leads to the hindrance of Ni reducibility along with weakening the Ni interaction with the silica matrix. This behavior particularly indicated the formation of solid oxide nickel-zinc solutions. The catalytic properties of Zn-modified catalysts in the dehydrogenation of methylcyclohexane appeared significantly superior to their Ni-Cu counterparts. For example, the selectivity of Zn/Ni-SiO2 catalysts toward toluene formation increased markedly with a decrease in the Ni : Zn mass ratio, achieving 97% at 350 °C over the sample with Ni : Zn = 80 : 20. This is attributed to the promoting geometric and electronic effects arising from the formation of bimetallic Ni-Zn solid solutions. Moreover, a deeper reduction of zinc and a more efficient formation of solid bimetallic solutions are observed after the catalytic tests.
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Affiliation(s)
| | - Yuliya K Gulyaeva
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Olga A Bulavchenko
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Andrey A Saraev
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Anna M Kremneva
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Sergey A Stepanenko
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Anton P Koskin
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Vasily V Kaichev
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
| | - Vadim A Yakovlev
- Boreskov Institute of Catalysis, Lavrentiev Ave., 5, 630090, Novosibirsk, Russia.
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Hydrogenation and Dehydrogenation of Liquid Organic Hydrogen Carriers: A New Opportunity for Carbon-Based Catalysts. Mol Vis 2022. [DOI: 10.3390/c8010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The development of a hydrogen-based economy is the perfect nexus between the need of discontinuing the use of fossil fuels (trying to mitigate climate change), the development of a system based on renewable energy (with the use of hydrogen allowing us to buffer the discontinuities produced in this generation) and the achievement of a local-based robust energy supply system [...]
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Zhu T, Wang R, Chen Z, Ji F, Dong Y, Cheng H, Yang M. Synthesis of Bifunctional Ru-Pd Catalysts Following the Double Reduction Method: Hydrogenation/Dehydrogenation of Liquid Organic Hydrogen Carriers. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00425a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic hydrogenation and dehydrogenation of liquid organic hydrogen carriers (LOHCs) have attracted immense attention as this is the most attractive strategy for the storage and release of hydrogen. Heterogeneous catalysts...
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