Article
Chemistry, Physical
L. Bartolucci, S. Cordiner, V. Mulone, C. Tatangelo, M. Antonelli, S. Romagnuolo
Summary: In recent decades, the impacts of climate change due to greenhouse gas emissions have become more severe, prompting international authorities to seek green solutions for sustainable economic development. One such solution is the reduction of fossil fuel usage in the transportation sector, with hydrogen emerging as a promising alternative due to its potential as an emission-free fuel when produced using renewable energy sources. However, there are several barriers to overcome, including production costs and the lack of distribution and storage infrastructure. This study proposes a multi-hub configuration for hydrogen production, combining on-site PV-powered electrolysis and centralized steam methane reforming. The results show that the size of the refueling station significantly affects economic performance, with larger stations offering greater benefits such as a reduction of up to 40% in the Levelized Cost of hydrogen. The synergistic effects of SMR and electrolyzer enable limited CO2 emissions per unit mass of hydrogen, and interconnecting multiple stations can further enhance environmental benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Kiyoshi Yamazaki, Mitsuru Matsumoto, Marie Ishikawa, Akinori Sato
Summary: To meet commercialization requirements, researchers prepared Ru catalysts supported on CeO2-PrOx composites (Ru/CP) by a coprecipitation method. The Ru/CP catalysts showed higher activity than Ru/CeO2 and Ru/PrOx catalysts, achieving over 99.5% NH3 conversion, a space velocity of 30,000 h-1, and a reaction temperature of 500 degrees C. Increasing the Pr content in the catalysts improved Ru dispersion but inhibited Ru metalation, maximizing the number of Ru active sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Hirokazu Kojima, Tomoki Matsuda, Kazuki Kano, Taku Tsujimura
Summary: The study simplified the system of liquid organic hydrogen carrier (LOHC) to successfully produce high-purity methylcyclohexane (MCH) using fluctuating electricity, providing an effective way to store renewable energy sustainably.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
P. Cardona, R. Costa-Castello, V. Roda, J. Carroquino, L. Valino, M. Serra
Summary: The growth of hydrogen fuel cell vehicles has generated a significant amount of research on hydrogen refuelling stations, particularly on-site green stations that produce hydrogen from renewable energy sources. This paper develops a linear model and uses a Model Predictive Controller to optimize the operation of a green hydrogen refuelling station in Zaragoza, Spain. The simulation results demonstrate the economic advantage of using the Model Predictive Controller compared to rule-based control solutions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Matteo Genovese, David Blekhman, Michael Dray, Petronilla Fragiacomo
Summary: Hydrogen technologies are rapidly spreading, with a focus on developing a robust fueling infrastructure for the mobility sector. New hydrogen stations operating under extreme conditions require more informed designs and equipment to meet growing demand and frequent utilization. Experimental research and data analysis from Cal State LA Hydrogen Research and Fueling Facility can provide valuable insights for station performance modeling tools.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The study evaluates the development of a zero-carbon marine fuel production system driven by solar energy, which produces and stores hydrogen using a floating photovoltaic system, proton exchange membrane electrolyzer, and hydrogen tank for ferry propulsion. Thermo-economic analysis shows that the proposed system has energy and exergy efficiencies of 15.35% and 16.19% respectively in grid-connected mode, with a net present value of 5.06 million Canadian dollars.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Engineering, Multidisciplinary
Kuan Zhang, Bin Zhou, Siu Wing Or, Canbing Li, Chi Yung Chung, Nikolai Voropai
Summary: This article proposes a method for multirenewable-to-hydrogen production and develops a capsule network forecasting model and a hierarchical coordinated control strategy to enhance the green H-2 production efficiency for hydrogen fueling stations.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Green & Sustainable Science & Technology
Xuchao Zhang, Gang Qiu, Shali Wang, Jiaxi Wu, Yunan Peng
Summary: This paper analyzed hydrogen leakage in hydrogen fueling stations using Quantitative Risk Assessment (QRA) and HyRAM software and proposed targeted preventive measures and safety distance for the safe construction and operation of hydrogen fueling stations.
Article
Multidisciplinary Sciences
Opeyemi A. Ojelade, Sharif F. Zaman
Summary: This study investigated the thermodynamic analyses of LOHCs using the reversible MTS system for H-2 storage, showing high equilibrium conversion rates and yields. Low temperature and high pressure favor toluene hydrogenation, while catalyst design improvement is needed for efficient reactions at atmospheric pressure.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Chemical
Kiyoshi Yamazaki, Mitsuru Matsumoto, Hidehito Kubo, Tadahiro Fujitani, Marie Ishikawa, Akinori Sato
Summary: This paper introduces an activity/durability evaluation technique for estimating the catalyst activity after several thousand hours, and conducts an accelerated deterioration durability evaluation of a Ru/MgO catalyst. The study finds that the NH3 conversion decreases almost linearly with the endurance time and explores the relationship between the deterioration rate and endurance temperature using the Arrhenius equation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Su-Mi Han, Ju-Hee Kim, Seung-Hoon Yoo
Summary: South Korea is actively promoting the development of the hydrogen economy, but public acceptance of building hydrogen fueling stations near residential areas poses a significant obstacle. Survey data shows that although a substantial proportion of the public supports the construction of hydrogen fueling stations, there is still a portion that opposes or remains indifferent, highlighting the need for the government to make additional efforts to improve acceptance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
Luning Chen, Pragya Verma, Kaipeng Hou, Zhiyuan Qi, Shuchen Zhang, Yi-Sheng Liu, Jinghua Guo, Vitalie Stavila, Mark D. Allendorf, Lansun Zheng, Miquel Salmeron, David Prendergast, Gabor A. Somorjai, Ji Su
Summary: Developing highly efficient and reversible hydrogenation-dehydrogenation catalysts is of great importance for hydrogen storage technologies. The authors have developed a highly efficient and reversible single-site platinum catalyst that exhibits excellent catalytic performance in the hydrogenation-dehydrogenation reactions of large molecules such as cyclohexane and methylcyclohexane.
NATURE COMMUNICATIONS
(2022)
Article
Green & Sustainable Science & Technology
Di Lu, Jing Sun, Yonggang Peng, Xiaofeng Chen
Summary: This paper proposes an optimized operation algorithm to reduce the cost of hydrogen refueling stations based on hydrogen energy demand estimation. The algorithm estimates the user's hydrogen demand and optimizes the operation of the refueling station using the peak-valley difference of electricity price to minimize the unit hydrogen energy cost. The results show that the proposed method effectively reduces the configuration and cost of the refueling station, promoting the popularization of hydrogen vehicles. The paper also discusses the application scope of the optimization method and the influence of electricity price and electrolyzer cost.
Article
Chemistry, Physical
Kamran Ghasemzadeh, Milad Ghahremani, Taher Yousefi Amiri, Angelo Basile, Adolfo Iulianelli
Summary: A comprehensive computational fluid dynamic model has been developed to predict the behavior of a membrane reactor in dehydrogenation of methylcyclohexane for hydrogen production, showing the membrane reactor outperforms the equivalent traditional reactor in terms of complete conversion and high hydrogen recovery rate under different operating parameters.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Matteo Genovese, Petronilla Fragiacomo
Summary: This paper analyzes an innovative energy system based on a hydrogen station, which serves as the core of a smart energy production center and incorporates various hydrogen technologies nearby. A case study is conducted on a station with a daily hydrogen production capacity of 360 kg, located near a university campus. The study includes a hydrogen mobility network consisting of fuel cell vehicles, bicycles, and forklifts. The system also meets the power and heat demand of a student housing building on the campus, and its performance is evaluated through technical and economic analyses.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jo Nakayama, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
Junji Sakamoto, Jo Nakayama, Toyoaki Nakarai, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
Junji Sakamoto, Ryunosuke Sato, Jo Nakayama, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Physical
Jo Nakayama, Hitoshi Misono, Junji Sakamoto, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Jo Nakayama, Naoya Kasai, Tadahiro Shibutani, Atsumi Miyake
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Thermodynamics
Jo Nakayama, Atsumi Miyake
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2012)
Article
Thermodynamics
Jo Nakayama, Atsumi Miyake
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2013)
Article
Geosciences, Multidisciplinary
Yusuke Koshiba, Jo Nakayama
Summary: This questionnaire-based study aimed to investigate the unsafe post-evacuation behaviors of university students and staff members in Japan after a major earthquake, revealing that factors such as cold and rainy weather, the presence of persons with disabilities, and personal belongings left in severely damaged buildings significantly increased their intentions to reenter. The study also found that knowledge of hazardous materials did not correlate significantly with intentions to reenter, and there was a negative relationship between risk perception and intentions.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2021)
Article
Chemistry, Physical
Jo Nakayama, Tomoya Suzuki, Sho Owada, Kento Shiota, Yu-ichiro Izato, Kazuhiko Noguchi, Atsumi Miyake
Summary: This article introduces the green innovation project in Namie, Fukushima prefecture, which aims to eliminate CO2 emissions and establish a zero-carbon city using hydrogen. The study focuses on the development and implementation of low-pressure hydrogen piping in public spaces, emphasizing the importance of process development and risk analysis. The research identifies potential risks and safety measures through hazard identification studies and hydrogen dispersion simulations. Furthermore, the evaluation of a shutdown system for the piping is discussed, and risk reduction measures based on inherent safety concepts are proposed, with potential applications in similar cases.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Nobukata Ochiai, Jo Nakayama, Yu-ichiro Izato, Atsumi Miyake
Summary: The risks posed by natural hazard-triggered technological disasters to chemical industries have attracted research attention. Case studies are essential for risk assessment and countermeasure implementation, with a recent focus on tsunami risk assessment in Japan.
PROCESS SAFETY PROGRESS
(2022)