Article
Energy & Fuels
Weijun Qiao, Shuqian Yang, Lei Zhang, Yuan Tian, Honghao Wang, Caishun Zhang, Zhixian Gao
Summary: Different divalent metals were used to prepare Cu-Ce/M-Al catalysts for hydrogen production from methanol steam reforming, with Ce-Cu/Zn-Al catalyst showing the best performance. The dispersion, reduction temperature, and oxygen vacancies on the surface played key roles in determining the catalytic performance of the catalysts. At optimal conditions, the methanol conversion reached 100% and the H-2 production rate was 779.7 STP cm(3) kg(-1) s(-1).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Physical
Francesco Dalena, Emanuele Giglio, Alessia Marino, Alfredo Aloise, Gianfranco Giorgianni, Massimo Migliori, Girolamo Giordano
Summary: This article discusses zeolitic materials used for the ethanol steam reforming reaction to produce hydrogen, focusing on thermodynamics, reaction mechanisms, the role of active metals, and various catalysts involved in the process.
Article
Nanoscience & Nanotechnology
Wei Yu, Jiali Yan, Zhengwei Cui, Na Yang
Summary: Ammonium carbonate-assisted mechanochemical preparation was developed for Cu-based catalysts in steam reforming of methanol. The optimized samples showed high surface area porous structure, resulting in superior catalytic activity. The ball-milled catalysts exhibited better stability and activity compared to wet-impregnated samples.
Article
Engineering, Chemical
Soheila Sohrabi, Abdullah Irankhah
Summary: The effects of Cu, Zn, and Mn on CeO2 in ethanol steam reforming for hydrogen production were evaluated, with CeMn oxide showing the highest conversion and hydrogen yield. The entrance of Mn into the ceria lattice enhanced the catalyst reducibility, with an increase of the Ce/Mn ratio leading to high methane selectivity. Mn conducted the reaction to more CO2 generation and was an effective metal for ethanol steam reforming reaction.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jiachen Lin, Chaoquan Hu, Xuebing Xu, Mingyuan Shao, Yufeng Hu, Chuanchuan Ma
Summary: Cu/Zn/Al mixed oxides based on hydrotalcite prepared by incipient co-precipitation method were tested for their catalytic properties in steam reforming of methanol, with a noticeable synergy between Ru and Cu species enhancing methanol conversion. A proposed SRM reaction mechanism rationalizes the relationship between copper dispersion on the surface and the size of the copper/oxygen interface where intermediates rearrange.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Chemistry, Physical
S. Sayas, N. Vivo, J. F. Da Costa-Serra, A. Chica
Summary: The study demonstrates that nickel catalyst supported on sepiolite exhibits promising catalytic performance in steam reforming of toluene, especially when prepared using precipitation method. This alternative method results in a catalyst with higher activity, selectivity to hydrogen, and lower production of undesirable by-products compared to the traditional incipient wetness impregnation method.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xianglei Liu, Chuang Bao, Zhonghui Zhu, Hangbin Zheng, Chao Song, Qiao Xu
Summary: Mesoporous Cu/TiO2-CeO2 catalysts show excellent performance in methanol steam reforming, achieving enhanced hydrogen production rate through thermophoto synergic effects, paving the way for corresponding technology development.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yujia Liu, Zhenwei Liang, Jiazhun Huang, Biqi Zhong, Xiaojun Yang, Tiejun Wang
Summary: In this article, a novel screening strategy called the PMC-IGM model is proposed to identify highly active methanol-reforming catalysts. The model effectively integrates and utilizes information from different aspects of elements, achieving high predictive accuracy and successfully identifying catalysts with promising results. This research holds great significance in accelerating the discovery of novel methanol-reforming catalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Morgana Rosset, Liliana Amaral Feris, Oscar W. Perez-Lopez
Summary: Incorporating Mg or Zn into NiAl-LDH for reconstruction using a memory effect improved the catalytic activity and stability in the dry reforming of Biogas. The washing step significantly affected LDH reconstruction, with different metals influencing the properties of the materials. Ni-Zn alloy formation in Zn-reconstructed catalysts led to the best performance in methane and carbon dioxide conversion with a H-2/CO ratio of approximately 2.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Byung Sun Yoon, Yeon Jeong Yu, Gwan-Joong Park, Sung-Bin Choi, Su-Ji Kim, Chang Hyun Ko
Summary: The eggshell-type design of catalysts enables selective distribution on the outer region, resulting in enhanced efficiency.
Article
Engineering, Chemical
Mouxiao Song, Wenqing Zeng, Li Li, Xueshuang Wu, Guiying Li, Changwei Hu
Summary: Different Zr/Al molar ratios were used to prepare copper-based catalysts through the impregnation method. The 5 wt % Cu/ZrO2-8Al2O3 catalyst exhibited high activity with methanol conversion of 84.5%, hydrogen production rate of 98.7 mu mol/gcat center dot s, and the lowest carbon monoxide selectivity of 1.5% due to its smallest copper particle size, high medium-strong basic site, and high surface (Cu1+ + Cu0) proportion. In situ FT-IR results indicated that formate species might play an important role in H2 production.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Multidisciplinary Sciences
Anahita Mortazavi-Manesh, Nasser Safari, Farzad Bahadoran, Yasin Khani
Summary: In this study, Cu/perovskite-type structures of the general formula Cu/Ca(ZrxTi1-x)O3 (x = 1, 0.8, 0.6) were synthesized via sol-gel process and wetness impregnation method. The physicochemical properties of the catalysts were analyzed using various techniques. The catalysts showed high activity, selectivity, and sustainability, with significant improvement in catalytic activity due to the morphological features of the synthesized Cu/perovskite-type porous structures. Notably, the prepared Cu/Ca(Zr0.6Ti0.4)O3 catalyst exhibited remarkable activity in methanol steam reforming.
Article
Chemistry, Physical
Jose L. C. Fajin, M. Natalia D. S. Cordeiro
Summary: Ni-Cu catalysts are low cost, highly selective for CO2 and H-2 in methanol steam reforming, blocking the production of methane, CO, and coke. The mechanism of methanol steam reforming on Ni-Cu surfaces involves methanol decomposition followed by the water-gas shift reaction, with a minority route for direct CO2 formation. The Ni-Cu alloy suppresses methane and coke formation and has a high desorption barrier for CO species, avoiding its production.
Article
Green & Sustainable Science & Technology
Concetta Ruocco, Vincenzo Palma, Marta Cortese, Marco Martino
Summary: Oxidative steam reforming of bioethanol was studied using Pt-Ni/CeO2-SiO2 and Ru-Ni/CeO2-SiO2 catalysts with noble metal content ranging from 0-3 wt%. Increasing the noble metal content improved the catalysts' resistance to deactivation, but a further increase up to 2 wt% was detrimental for stability. The most durable catalyst (2 Pt-10Ni) showed complete conversion and stable H-2 yield above 50% when tested under a raw bioethanol stream for 100 h at 4.1 h(-1).
Article
Chemistry, Physical
Esteban L. Fornero, Julia Vecchietti, Manuela Boucinha Rodrigues, Juan C. Hernandez-Garcido, Adrian L. Bonivardi
Summary: The performance of gallium promoted cobalt-ceria catalysts for ethanol steam reforming was studied. Gallium promoted catalyst showed higher conversion efficiency of ethanol and production of oxygenated by-products compared to cobalt-ceria catalyst. The role and mechanism of gallium promotion were analyzed and explained through detailed characterization and analysis of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
T. Delise, A. C. Tizzoni, E. V. Votyakov, L. Turchetti, N. Corsaro, S. Sau, S. Licoccia
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2020)
Article
Energy & Fuels
Tania Morabito, Salvatore Sau, Anna Chiara Tizzoni, Annarita Spadoni, Mauro Capocelli, Natale Corsaro, Cadia D'Ottavi, Silvia Licoccia, Tiziano Delise
Article
Energy & Fuels
Roberto Grena, Michela Lanchi, Luca Turchetti, Tommaso Crescenzi
Summary: A linear receiver capable of reaching temperatures of up to 800 degrees Celsius is achieved by avoiding limiting factors in traditional receivers and utilizing thermal insulation through an elliptic reflecting cavity. This technology opens up possibilities for processes requiring temperatures above 700 degrees Celsius, such as thermochemical cycles for hydrogen production and solar fuel production.
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME
(2021)
Article
Energy & Fuels
Adio Miliozzi, Franco Dominici, Mauro Candelori, Elisabetta Veca, Raffaele Liberatore, Daniele Nicolini, Luigi Torre
Summary: Utilizing concrete-based heat storage material with a small amount of shape-stabilized phase change material (PCM) can improve energy storage efficiency, enabling storage of energy as both sensible and latent heat. By enhancing thermal properties, particularly energy density, more compact and economically feasible thermal energy storage systems can be developed to operate within a temperature range of approximately 150-350 degrees C.
Article
Energy & Fuels
Giovanni Salvatore Sau, Valerio Tripi, Anna Chiara Tizzoni, Raffaele Liberatore, Emiliana Mansi, Annarita Spadoni, Natale Corsaro, Mauro Capocelli, Tiziano Delise, Anna Della Libera
Summary: Molten salts eutectics are considered promising phase change materials for thermal storage applications due to their ability to store and release heat at high temperatures. This study focused on investigating the thermophysical behavior of a cost-effective and safe ternary eutectic for thermal storage, using an indirect heat exchanger with aluminum capsules and air as the heat transfer fluid. The simulation showed a realistic storage efficiency of around 0.6 and estimated a conservative investment cost for the storage system.
Article
Energy & Fuels
Salvatore Esposito, Antonio D'Angelo, Claudia Diletto, Antonio Guglielmo, Michela Lanchi, Gabriella Rossi
Summary: The development of thermally stable solar coatings with high photo-thermal performance is crucial for the advancement of CSP technology. ENEA has been working on solar coatings using double nitride cermet technology since 2005, utilizing silver and tungsten as infrared reflectors. Silver provides better optical performance than tungsten, but its high diffusivity limits its use at high temperatures.
Article
Chemistry, Physical
Tiziano Delise, Salvatore Sau, Anna Chiara Tizzoni, Annarita Spadoni, Natale Corsaro, Raffaele Liberatore, Tania Morabito, Emiliana Mansi
Summary: Chemical systems for thermal energy storage show promise in addressing solar irradiation fluctuation issues, and this study focused on simulating a configuration using an indirect-packed bed heat exchanger. Despite limitations in heat exchange efficiency, the results demonstrated a good storage efficiency of about 0.7.
Article
Energy & Fuels
Alberto Giaconia, Anna Chiara Tizzoni, Salvatore Sau, Natale Corsaro, Emiliana Mansi, Annarita Spadoni, Tiziano Delise
Summary: This paper presents a comparative assessment of different heat transfer fluids (HTF) for concentrating solar power (CSP) applications, including synthetic oils and molten salt mixtures. It analyzes the impact of these HTF options on the design and operation of CSP plants from a techno-economic perspective, reviewing physical properties, operation ranges, corrosion, and environmental issues. The study also includes experimental data obtained by the authors to thoroughly compare the different HTF solutions.
Article
Nuclear Science & Technology
E. Mansi, S. Sau, I. Balog, G. Caputo, N. Corsaro, G. Tiranti, F. Filippi, F. Panza, N. Ratto, A. Simonetti, A. C. Tizzoni, M. Ciotti, A. Cemmi, M. C. Annesini
Summary: This study investigated the thermal stability of a commercial terphenyl-based oil, revealing that the main decomposition mechanism involves the loss of hydrogen atoms and partial polymerization processes, explaining the increase in dynamic viscosity and decrease in volatility observed for the thermally stressed materials. Additionally, the study estimated the decomposition kinetic constants for the oil.
PROGRESS IN NUCLEAR ENERGY
(2021)
Article
Energy & Fuels
Valerio Tripi, Salvatore Sau, Anna Chiara Tizzoni, Emiliana Mansi, Annarita Spadoni, Natale Corsaro, Cadia D'Ottavi, Mauro Capocelli, Silvia Licoccia, Tiziano Delise
JOURNAL OF ENERGY STORAGE
(2021)
Proceedings Paper
Energy & Fuels
Salvatore Sau, Francesca Varsano, Anna Chiara Tizzoni, Natale Corsaro, Claudia Frittella, Michela Lanchi, Raffaele Liberatore, Annarita Spadoni, Luca Turchetti, Maria Cristina Annesini
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2019)
(2020)
Proceedings Paper
Energy & Fuels
Tiziano Delise, Anna Chiara Tizzoni, Luca Turchetti, Natale Corsaro, Salvatore Sau, Silvia Licoccia
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2019)
(2020)
Proceedings Paper
Energy & Fuels
Walter Gaggioli, Luca Turchetti, Salvatore Sau, Annachiara Tizzoni, Elisabetta Veca, Giuseppe Petroni, Carlo Rocca, Primo Di Ascenzi, Pasquale Pagano, Mauro Giorgetti
INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS (SOLARPACES 2019)
(2020)
