Article
Chemistry, Physical
Olugbenga Akande, Bongju Lee, Jude A. Okolie, Hugues Nkomba Museba
Summary: This study examines the effectiveness of a 915 MHz atmospheric pressure microwave torch for bulk syngas or hydrogen generation via noncatalytic greenhouse gas reforming. The investigation shows that plasma-GHG reforming for mass hydrogen generation is feasible without a catalyst at high gas flow rate and microwave power. The best hydrogen production rate and energy yield were 1672 g (H2)/h and 41.8 g (H2)/ kWh, respectively. The plasma reforming method employed in this study shows its excellent potential for industrial application.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jing-Lin Liu, Tong Hui Zhu, Bing Sun
Summary: A novel kinetic model was developed to understand the chemical nature of fuel reforming in liquid phase discharge. The model was verified by experimental results for ethanol reforming in microwave discharge plasma in liquid. The key reactive species in the liquid phase discharge were identified, and the rate determining steps for ethanol conversion were revealed. The kinetic control mechanism for ethanol reforming in liquid phase discharge was determined, and the energy transfer pathway for discharge power to chemical energy was simulated. A competitive energy efficiency of -85% for ethanol reforming was achieved in the liquid phase discharge.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Bogdan Ulejczyk, Lukasz Nogal, Michal Mlotek, Krzysztof Krawczyk
Summary: Ethanol steam reforming is a potential source of green hydrogen, but the process is complex and catalyst deactivation due to coke deposition is a common problem. In this study, a plasma reactor was used to mitigate the coke-induced disturbance. The research focused on the influence of steam, and the optimal water/ethanol molar ratio was found to be 4. At this ratio, the energy efficiency reached 22.5 mol(H-2)/kWh with a high ethanol conversion of 92%.
Article
Chemistry, Multidisciplinary
Hojoong Sun, Jungwun Lee, Moon Soo Bak
Summary: Atmospheric pressure microwave plasma reforming of methane and carbon dioxide mixture demonstrates high conversion rates into hydrogen and carbon monoxide at temperatures up to 5900 K. A reactor network-type simulation reveals that reforming occurs through the flow mixing with surrounding gas entering and diffusing out of the plasma stream, as well as heating of the surrounding stream by the plasma stream.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Energy & Fuels
R. Rincon, J. Munoz, F. J. Morales-Calero, J. Orejas, M. D. Calzada
Summary: H2 can be produced from alcohol decomposition using plasma technology. Comparison between two plasma sources, TIAGO torch and Surfatron, showed that TIAGO torch outperforms Surfatron in terms of H2 production rate and energy efficiency.
Article
Chemistry, Physical
Qiuying Wang, Jiaqi Wang, Tonghui Zhu, Xiaomei Zhu, Bing Sun
Summary: This paper demonstrates the use of liquid-phase microwave discharge plasma for methane reforming to produce hydrogen, achieving a methane conversion rate of 94.3% and a hydrogen concentration of 74.0%. By optimizing the electrode structure, higher hydrogen yield and energy efficiency were obtained, with the highest energy efficiency of hydrogen production reaching approximately 0.92 mmol/kJ.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Z. Li, X. Zhu, J. Sun, Q. Wang, B. Sun
Summary: This study proposes a method combining liquid-phase microwave discharge plasma and catalyst to improve hydrogen production from ethanol solution. The Cu/Zn/Al catalyst effectively utilizes excess ethanol vapor to produce hydrogen and enhances hydrogen production. The combination of microwave discharge plasma and Cu/Zn/Al catalyst has a synergistic effect on hydrogen production, providing an effective solution to improve hydrogen production from microwave plasma.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Hao Meng, Yusen Yang, Tianyao Shen, Wei Liu, Lei Wang, Pan Yin, Zhen Ren, Yiming Niu, Bingsen Zhang, Lirong Zheng, Hong Yan, Jian Zhang, Feng-Shou Xiao, Min Wei, Xue Duan
Summary: This paper reports a RhNi/TiO2 catalyst with a tunable RhNi-TiO2 strong bimetal-support interaction derived from the structure topological transformation of RhNiTi-layered double hydroxides precursors. The resulting catalyst exhibits extraordinary catalytic performance toward ethanol steam reforming reaction with high H-2 yield, production rate, and operational stability.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Olugbenga Akande, BongJu Lee
Summary: This study investigates a microwave plasma torch-based method called plasma steam methane reforming (PSMR) as a solution to the shortage of hydrogen pipeline infrastructure. The experimental results demonstrate that PSMR has high energy yield, small carbon footprint, and real-time fueling capabilities, making it a promising option for commercial-scale hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Sujoy Bepari, Joy Jyoti Sarkar, Narayan C. Pradhan
Summary: In this study, olivine was used as a support for nickel catalyst in the steam reforming of ethanol. Among different catalysts, the 5% Ni on olivine catalyst showed the highest hydrogen yield and ethanol conversion. The catalyst activity was analyzed by varying temperature, ethanol to water molar ratio, and space-time. The optimal conditions for the ethanol steam reforming reaction were found to be 550 degrees C, an ethanol to steam molar ratio of 1:10, and a space-time of 7.94 kg cat h/kmol ethanol.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Guoqiang Cao, Yue Xiao, Wei-Min Huang, Chien-Hua Chen, Jonas Baltrusaitis
Summary: This study investigates the production of hydrogen (H2) through ethanol steam reforming (ESR) in a dielectric barrier discharge (DBD) plasma reactor. A response surface methodology (RSM) was used to evaluate the effects of discharge power, total flow rate, and ethanol-to-water (EtOH/H2O) molar ratio on the plasma-assisted ESR reaction. The results showed that the EtOH/H2O molar ratio had the most significant effect on EtOH conversion and H2 selectivity, while the total flow rate determined the specific energy requirement (SER) for H2 production. Process optimization resulted in the identification of the optimal conditions for the ESR reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Concetta Ruocco, Vincenzo Palma, Gianmario Picciotti, Antonio Coppola
Summary: The study comprehensively investigates the kinetics of ethanol oxidative reforming over a Pt-Ni/CeO2-Al2O3 catalyst in the presence of fuel grade bioethanol, and develops a kinetic model that includes the formation of solid carbon. The results show a satisfactory fitting of the experimental data for the reaction scheme involving ethylene and acetaldehyde formation, their subsequent decomposition, methane oxidation, and steam reforming and water gas shift reaction. Furthermore, the catalyst exhibits high stability and near-zero carbon emission during long-term testing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Benjamin L. Kee, Martinus Dewa, Osman Akpolat, Patrick Littlewood, James P. Seaba, Su Ha
Summary: Caustic Aqueous Phase Electrochemical Reforming (CAPER) can produce pure compressed H2 at lower voltages, temperatures, and energy requirements than conventional electrolysis, while capturing carbonaceous products. The CAPER flow reactor consists of stainless steel endplates, stainless steel current collectors, and a Teflon flow field. The electrodes are prepared using commercial palladium nanoparticles on carbon support for the anode and platinum nanoparticles on carbon support for the cathode. Rating: 8 out of 10.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yimin Deng, Shuo Li, Lise Appels, Huili Zhang, Nick Sweygers, Jan Baeyens, Raf Dewil
Summary: Catalytic steam reforming of ethanol (CSRE) is a promising method for hydrogen production. Ethanol can be derived from low-cost carbohydrates or biomass through fermentation. This study explores the use of novel non-noble catalysts, impregnated in alpha-Al2O3, for CSRE. The catalytic experiments demonstrate high hydrogen yields and negligible catalyst deactivation. Pilot-scale investigations have been initiated.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Chemistry, Physical
Hongrui Liu, Rui Ding, Yuguang Zhang, Hongshen Li, Shizhong Li
Summary: Hydrocalumite derived nickel (Ni) catalysts with different loading of magnesium (Mg) were prepared and tested for ethanol steam reforming (ESR). The optimal reaction temperature for the ESR catalysts was found to be 650 degrees C, with 15Ni7.5Mg/HCa showing remarkable catalytic performance. The characterization results indicate that 15Ni7.5Mg/HCa with a certain amount of Mg loading exhibits the smallest Ni0 crystallite sizes, better H2 reducibility, and suitable basicity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
N. Bundaleska, D. Tsyganov, A. Dias, E. Felizardo, J. Henriques, F. M. Dias, M. Abrashev, J. Kissovski, E. Tatarova
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2018)
Article
Multidisciplinary Sciences
N. Bundaleska, J. Henriques, M. Abrashev, A. M. Botelho do Rego, A. M. Ferraria, A. Almeida, F. M. Dias, E. Valcheva, B. Arnaudov, K. K. Upadhyay, M. F. Montemor, E. Tatarova
SCIENTIFIC REPORTS
(2018)
Article
Materials Science, Multidisciplinary
N. Bundaleska, N. Bundaleski, A. Dias, F. M. Dias, M. Abrashev, G. Filipic, U. Cvelbar, Z. Rakocevic, Zh Kissovski, J. Henriques, E. Tatarova
MATERIALS RESEARCH EXPRESS
(2018)
Article
Chemistry, Physical
R. Aguincha, N. Bundaleski, N. Bundaleska, M. Novakovic, J. Henriques, Z. Rakocevic, E. Tatarova, O. M. N. D. Teodoro
APPLIED SURFACE SCIENCE
(2020)
Article
Electrochemistry
Kush K. Upadhyay, N. Bundaleska, M. Abrashev, N. Bundaleski, O. M. N. D. Teodoro, I. Fonseca, Andre Mao de Ferro, Rui Pedro Silva, E. Tatarova, M. F. Montemor
ELECTROCHIMICA ACTA
(2020)
Article
Multidisciplinary Sciences
N. Bundaleska, A. Dias, N. Bundaleski, E. Felizardo, J. Henriques, D. Tsyganov, M. Abrashev, E. Valcheva, J. Kissovski, A. M. Ferraria, A. M. Botelho do Rego, A. Almeida, J. Zavasnik, U. Cvelbar, O. M. N. D. Teodoro, Th Strunskus, E. Tatarova
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Physical
D. Tsyganov, N. Bundaleska, J. Henriques, E. Felizardo, A. Dias, M. Abrashev, J. Kissovski, A. M. Botelho do Rego, A. M. Ferraria, E. Tatarova
Article
Nanoscience & Nanotechnology
Neelakandan M. Santhosh, Kush K. Upadhyay, Petra Strazar, Gregor Filipic, Janez Zavasnik, Andre Mao de Ferro, Rui Pedro Silva, Elena Tatarova, Maria de Fatima Montemor, Uros Cvelbar
Summary: The study demonstrates the successful fabrication of metal sulfide-carbon nanostructure electrode materials with ultra-high capacity and outstanding rate capability. By combining vertically aligned carbon nanotubes with single-crystal metallic nickel grains, the hybrid binder-free electrodes exhibit remarkable electrochemical performance compared to other reported Ni3S2-based electrodes, showing high specific capacity, retention rate at high current densities, and cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
A. Dias, N. Bundaleska, E. Felizardo, D. Tsyganov, A. Almeida, A. M. Ferraria, A. M. Botelho do Rego, M. Abrashev, Th Strunskus, N. M. Santhosh, U. Cvelbar, J. Zavasnik, M. F. Montemor, M. M. Almeida, Patricia A. Carvalho, J. Kissovski, L. L. Alves, E. Tatarova
Summary: This paper proposes a novel approach using microwave plasma to synthesize high-yield and high-quality hybrid graphene-based nanostructures. The method can produce customizable electrode materials with well-structured metal-based nanostructures on graphene nanosheets.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Kush K. Upadhyay, N. Bundaleska, M. Abrashev, J. Kissovski, N. Bundaleski, O. M. N. D. Teodoro, Andre Mao de Ferro, Rui Pedro Silva, A. Dias, E. Felizardo, E. Tatarova, M. F. Montemor
Summary: Free-standing graphene synthesized using atmospheric pressure microwave plasma showed good supercapacitive properties and was used as an electrode. Electrodes made by mixing graphene with activated carbon demonstrated improved specific capacitance and rate capability compared to commercial activated carbon electrodes.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
D. Tsyganov, N. Bundaleska, A. Dias, J. Henriques, E. Felizardo, M. Abrashev, J. Kissovski, A. M. Botelho do Rego, A. M. Ferraria, E. Tatarova
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Multidisciplinary Sciences
Dmitry L. Tsyganov
SN APPLIED SCIENCES
(2019)