Article
Energy & Fuels
Jingchun Yan, Tianxu Shen, Peng Wang, Xianglei Yin, Xiao Zhu, Shouxi Jiang, Laihong Shen
Summary: An innovative fluidized bed thermogravimetric analyzer was designed to study the performance of oxygen carriers in chemical looping combustion processes, revealing that high-grade manganese ore with less silicon content is more suitable for industrial CLC pilots.
Article
Chemistry, Applied
Jinchen Ma, Du Han, Haibo Zhao
Summary: By using oxygen-carrier-aided combustion (OCAC) technology in a circulating fluidized bed reactor, the uniform distribution of temperature and oxygen can be enhanced, leading to a reduction in NOx emissions. This study optimized the oxygen carrier and evaluated the effect of operational parameters on gas concentrations, carbon conversion, CO2 yield, and NO conversion. The results showed that OCAC technology achieved improved CO2 yield and low NO conversion.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Cao Kuang, Shuzhong Wang, Song Lv, Jianjun Cai, Ming Luo, Jun Zhao
Summary: Cu-based oxygen carriers modified by iron ore and chrysotile showed enhanced performance in in-situ gasification and chemical-looping with oxygen uncoupling processes, improving energy conversion efficiency, stability, and high-temperature tolerance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Huan Zhou, Guoqiang Wei, Qun Yi, Zheming Zhang, Yingjie Zhao, Yuke Zhang, Zhen Huang, Anqing Zheng, Kun Zhao, Zengli Zhao
Summary: Chemical looping gasification (CLG) of Yunnan lignite with Fe-Mn mixed oxygen carriers (OCs) was conducted to produce high-purity synthesis gas and reduce pollutant emissions. The Fe-Mn composite OCs exhibited oxygen decoupling characteristics and synergistic effects between active components, making them suitable for the gasification process.
Article
Chemistry, Applied
Yunchang Dong, Yanan Wang, Jinchen Ma, Hengfeng Bu, Chuanbao Zheng, Haibo Zhao
Summary: In this study, composite oxygen carriers were prepared using extrusion-spheronization method with fine iron and copper ores as raw materials and inert aluminosilicates as binders. After optimization, the oxygen carriers showed good performance in terms of reactivity and stability, indicating the suitability of the method for large-scale preparation of oxygen carrier particles.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Muflih A. Adnan, Abdulhadi A. Al-Zahrani, Tamanna I. Haque, Shaikh A. Razzak, Mohammad M. Hossain
Summary: A new oxygen carrier material was developed for fluidized chemical looping combustion process, serving as both a catalyst and a source of solid phase oxygen. Cerium modification improved the thermal stability of γ-Al2O3, reducing its interaction with MnOx. Experimental results showed that Ce modification enhanced the thermal stability of γ-Al2O3 and improved the reduction and re-oxidation performance of the samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Guicai Liu, Haiming Wang, Severin Deplazes, Andrei Veksha, Christian Wirz-Toendury, Apostolos Giannis, Teik Thye Lim, Grzegorz Lisak
Summary: The study investigated the simultaneous high-temperature HCl removal and syngas combustion over barium-decorated oxygen carriers. Coating iron ore with Ba and Al compounds enhanced combustion efficiency and enabled sorbent regeneration through treatment with a mixture of CO2 and H2O. The findings demonstrate the potential of using Ba-Al-decorated iron ore as a bifunctional material in CLC processes.
COMBUSTION AND FLAME
(2021)
Article
Engineering, Environmental
Zhenwu Miao, Laihong Shen, Haibo Zhao
Summary: A study found that a single natural ore oxygen carrier (OC) is limited in its industrial application due to its weak reactivity and cyclic stability. Chemical looping combustion (CLC) cycle tests were conducted on a composite hematite and copper ore OC prepared by spray drying granulation using a fluidized bed thermogravimetric analyzer (FB-TGA). The results revealed a high attrition rate of OC in the early stage of fluidization, which stabilized after 6 minutes at 0.28%/h. The redox cycle reaction subjected the OC to chemical and thermal stresses, leading to decreased mechanical strength, increased particle attrition and sintering. This hindered the oxidation stage and resulted in deep reduction of OC, causing particle agglomeration and loss of fluidization. Therefore, reducing the oxygen transfer capacity and residence time in the fuel reactor is beneficial for the safe operation of OC in industry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Richard A. Newby, Dale L. Keairns, Robert W. Stevens
Summary: The objective of this study was to estimate the cost of commercial production of oxygen carriers (OCs) for large-scale application in the chemical looping combustion (CLC) power generation industry. Two production facility scenarios were considered, and two OC production techniques were addressed. The estimated OC product costs can be used to guide development and determine the maximum OC makeup rate for achieving a designated cost-of-electricity (COE) reduction goal.
Article
Energy & Fuels
Pietro Bartocci, Alberto Abad, Arturo Cabello Flores, Margarita de las Obras Loscertales
Summary: To address the scale-up challenges of Chemical Looping Processes, the development of efficient and affordable oxygen carriers is crucial. Ilmenite, an ore-derived oxygen carrier, has been identified as an abundant and low-cost option. This paper provides insights into its preparation, reactivity, and performance compared to other carriers, along with its thermodynamic properties and kinetics. The paper also explores its compatibility with various fuels (solid, liquid, gaseous, including biofuels) and discusses important considerations such as cost, environmental sustainability, oxygen transport capacity, as well as issues related to fluidized bed reactors, such as agglomeration and attrition behavior. Furthermore, the paper investigates the interaction between ilmenite and fuels, including the impact of impurities and coke deposition on the gasification rate of solid fuels.
Review
Energy & Fuels
Dunyu Liu, Chaoran Wang, Yunpei Fan, Qiuqi Liu, Xudong Wang, Kailong Xu, Jing Jin, Jingjing Ma, Jinchen Ma
Summary: Chemical looping combustion (CLC) of coal for carbon capture utilization and storage is an effective technology to reduce carbon emission. However, there is uncertainty in mercury emission from both air and fuel reactor. This paper aims to reveal the mechanisms for the transformation of mercury-related species.
Article
Green & Sustainable Science & Technology
Haiming Wang, Guicai Liu, Andrei Veksha, Xiaomin Dou, Apostolos Giannis, Teik Thye Lim, Grzegorz Lisak
Summary: The redox performances of iron ore modified with different alkaline earth metals as oxygen carriers for chemical looping combustion of municipal solid waste derived syngas were evaluated. It was found that BaO-modified iron ore demonstrated the best reactivity, and AEM oxides showed superior performance compared to AEM aluminates due to their strong interaction with Fe2O3.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Lei Liu, Zhenshan Li, Ningsheng Cai
Summary: This study reports tonnage-scale preparation of manganese oxygen carrier particles using industrial spray drying granulation with original manganese ore and kaolin fines. It found that reaction temperature and gas concentrations of O-2, H-2, and CH4 have an impact on redox kinetics, with H-2 reduction being approximately 6 times faster than CH4 reduction.
Article
Thermodynamics
Haodong Huang, Jinchen Ma, Haibo Zhao, Chuguang Zheng
Summary: This work investigates the behavior of coal-derived chlorine in chemical looping combustion (CLC) and the potential adverse impacts of primary gaseous chlorine (HCl) on a Cu-based oxygen carrier (OC). The inactivation mechanism of the sol-gel-derived CuO/Al2O3 OC is studied. It is found that HCl is the main gaseous chlorine in coal CLC and shows high reactivity towards CuO. The presence of HCl can result in corrosion and degradation of the OC.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Chemistry, Applied
Daofeng Mei, Amir H. Soleimanisalim, Carl Linderholm, Anders Lyngfelt, Tobias Mattisson
Summary: Testing a new manganese ore as oxygen carrier in Chemical Looping Combustion (CLC) with different biomass fuels showed high reactivity and low oxygen demand. Controlling temperature, solids circulation, and fuel power can improve carbon capture efficiency in the experiment.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Thermodynamics
Yngve Larring, Mehdi Pishahang, Julian Tolchard, Anna M. Lind, Martin F. Sunding, Ruth E. Stensrod, Marijke Jacobs, Frans Snijkers, Tjalling van der Kolk, Knuth Albertsen
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2020)
Article
Chemistry, Physical
Espen Sagvolden, Martin F. Sunding, Ole Swang
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Thermodynamics
Lei Liu, Zhenshan Li, Zuoan Li, Yngve Larring, Ye Li, Ningsheng Cai
Summary: The study investigated the redox kinetics of a new perovskite oxygen carrier and found that its oxidation rate is much faster than that of natural manganese ore and ilmenite, with only a fast initial stage observed. The effects of temperature, O2 concentrations, and reducing gas type were explored using MFB-TGA method, providing important insights for reactor design in CLC applications.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2021)
Article
Chemistry, Physical
Maria Kalyva, Martin F. Sunding, Annette E. Gunnaes, Spyros Diplas, Evgeniy A. Redekop
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Robert Otto, Vegard Brotan, Patricia A. Carvalho, Magnus Reiersen, Joachim S. Graff, Martin F. Sunding, Olav Asebo Berg, Spyros Diplas, Amin S. Azar
Summary: Introducing a new alloy for additive manufacturing requires iterative builds to avoid micro-cracks.
MATERIALS & DESIGN
(2021)
Review
Materials Science, Multidisciplinary
Elena Stefan, Belma Talic, Yngve Larring, Andrea Gruber, Thijs A. Peters
Summary: The paper discusses the potential materials challenges of gas turbines fueled with hydrogen, provides an updated overview of the most promising alloys and coatings for this application, and highlights topics requiring further research and development.
INTERNATIONAL MATERIALS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
J. Mayandi, T. G. Finstad, M. Stange, G. C. Vasque, M. F. Sunding, O. M. Lovvik, S. Diplas, P. A. Carvalho
Summary: Oxide-containing films were prepared by reactively sputtering a high-entropy alloy target and subjected to different heat treatments in oxidizing and reducing atmospheres, leading to significant changes in electrical properties. Temperature-dependent Hall effect measurements were used to study transport mechanisms and correlated with structural measurements, showing that variations in resistivity and temperature coefficient are related to film morphology and topology. Charge carrier conduction is dominated by weak localization and alloy scattering, influenced by the disorder level in the metallic high-entropy alloy and its topology.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jonathan M. Polfus, Marta Benthem Muniz, Ayaz Ali, Daniel A. Barragan-Yani, Per Erik Vullum, Martin F. Sunding, Takashi Taniguchi, Kenji Watanabe, Branson D. Belle
Summary: This study presents direct measurements of adhesion between 2D materials and reveals a significant reduction in adhesion energies with increasing temperature, mainly attributed to thermally induced ripples in the materials.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
J. Mayandi, M. Dias, M. Stange, A. Lind, M. F. Sunding, A. C. Cerdeira, M. Schrade, B. D. Belle, T. G. Finstad, L. C. J. Pereira, S. Diplas, P. A. Carvalho
Summary: The study proposes a new approach to developing nanostructured ferromagnetic composites based on progressive oxidation of high entropy alloys, destabilizing solid solutions and inducing phase separation at the nanoscale. By investigating immiscibility routes in multidimensional phase diagrams, the strategy can promote intimate contact between mixed oxides and metallic solid solutions with desired magnetic properties. The results highlight directions for tuning composition to achieve phases with specific magnetic properties in complex microstructures.
Article
Materials Science, Multidisciplinary
Einar Vollestad, Vegar Oygarden, Joachim Seland Graff, Martin Fleissner Sunding, John D. Pietras, Jonathan M. Polfus, Marie-Laure Fontaine
Summary: This study thoroughly investigates the impact of MnO2 as a co-dopant on the sinterability, thermal expansion, crystal structure, and ionic conductivity of ScSZ electrolytes. The results show that the addition of 2 mol% MnO2 significantly enhances the oxide ion conductivity, lowers the peak sintering temperature, and stabilizes the cubic structure. It is also found that manganese predominantly enters the structure as Mn2+ and higher valence states are present at the surface and grain boundaries.
Article
Materials Science, Coatings & Films
Jeyanthinath Mayandi, Matthias Schrade, Ponniah Vajeeston, Marit Stange, Anna M. Lind, Martin F. Sunding, Jonas Deuermeier, Elvira Fortunato, Ole M. Lovvik, Alexander G. Ulyashin, Spyros Diplas, Patricia A. Carvalho, Terje G. Finstad
Summary: HEA films of CrFeCoNiCu were deposited by sputtering. Their structure and electric transport properties were studied. The films showed a solid solution with an fcc structure. The dominant scattering mechanism of charge carriers was alloy scattering due to chemical disorder in the HEA. Annealing in different atmospheres caused varying changes in the properties of the films.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Nanoscience & Nanotechnology
Prashant Bisht, Arvind Kumar, Abhishek Ghosh, Per Erik Vullum, Martin Fleissner Sunding, Branson D. Belle, Bodh Raj Mehta
Summary: In this study, WS2 thin films with controllable growth orientation were synthesized using pulsed laser deposition. The effect of growth parameters on the formation and properties of the films was investigated. The study found significant differences in the growth mechanisms, gas sensing parameters, and underlying mechanisms between vertically and horizontally grown films.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Mehdi Pishahang, Yngve Larring, Schalk Cloete, Martin Fleissner Sunding, Christelle Denonville, Zuoan Li
Summary: The double-perovskite Ca2AlMnO5+delta has demonstrated excellent oxygen uptake and release capacity at intermediate temperatures (400-700 degrees C), making it a potential candidate for in situ oxygen production in IGCC processes.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Materials Science, Multidisciplinary
Amin S. Azar, Angeliki Lekatou, Martin F. Sunding, Joachim S. Graff, Nicky Tzima, Spyros Diplas
Summary: The study showed that the corrosion of both the AA5083 alloy deposited layers and the AA6061 substrate was mainly influenced by Al(Fe, Mn)Si particles, with the deposited layers exhibiting lighter corrosion compared to the substrate. Additionally, the fine precipitates around the particles at the interlayer boundaries caused material removal on the surface, and there were differences in anodic and cathodic polarization behavior of the deposited block on different cross-sectional planes.
NPJ MATERIALS DEGRADATION
(2021)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.
