Article
Chemistry, Multidisciplinary
Sungjoon Kweon, Hyejin An, Chae-Ho Shin, Min Bum Park, Hyung-Ki Min
Summary: N-ZSM-5 and N-beta zeolites with enhanced basic properties were prepared by substituting the framework oxygen with nitrogen using high temperature nitridation with ammonia. These basic zeolites, impregnated with Ni, showed superior DRM activity, especially at high temperature, due to enhanced basic property and dispersion of Ni active species.
JOURNAL OF CO2 UTILIZATION
(2021)
Review
Chemistry, Physical
Wan Nabilah Manan, Wan Nor Roslam Wan Isahak, Zahira Yaakob
Summary: This paper reviews the management of CO2 emissions and the recent developments in bimetallic catalysts utilizing cerium oxide in dry reforming methane and steam reforming methane from 2015 to 2021. The focus is on the identification of key trends in catalyst preparation using cerium oxide and the effectiveness of the formulated catalysts.
Article
Chemistry, Applied
Marco Pizzolato, Giulia Da Pian, Elena Ghedini, Alessandro Di Michele, Federica Menegazzo, Giuseppe Cruciani, Michela Signoretto
Summary: The effects of vanadium promotion on gamma-alumina supported nickel catalysts for methane dry reforming were investigated. The introduction of vanadium was crucial to hinder catalyst deactivation by coke deposition. The formation of nanotubes was reduced and hydrogen yield increased. When coupled with calcium, selectivity toward hydrogen/syngas production was improved. Under concentrated gases, vanadium was fundamental for a higher activity, with an increase of 30% and 15% in CH4 and CO2 conversions compared with the non-doped catalyst.
Article
Energy & Fuels
John Tamunosaki Iminabo, Misel Iminabo, Alex C. K. Yip, Shusheng Pang
Summary: This study investigates the production of hydrogen-rich syngas from renewable sources using durable and efficient catalysts. The results show that the 20%Ni-20%Fe-10%Co/ZSM-5 trimetallic catalyst performs the best in the steam methane reforming of simulated producer gas, effectively inhibiting carbon formation and sintering.
Review
Chemistry, Physical
Evandro Alves Nakajima, Ligia Gomes Oliveira, Lazaro Jose Gasparrini, Guilherme Emanuel de Queiros Souza, Antonio Augusto Ignacio, Helton Jose Alves, Carlos Eduardo Borba
Summary: This article investigates the kinetic model for dry methane reforming using Ni/Si-MCM-41 catalysts, with the single-site reversible Langmuir-Hinshelwood model showing the best fit among six models tested. The higher temperatures and lower flow rates resulted in increased methane conversion and hydrogen production, with methane conversions over 85% and H2/CO ratio near 1. The activation energy for the best model was estimated to be 76.6 kJ/mol, demonstrating its potential for mathematical modeling in reactor simulation for syngas or hydrogen-rich gas production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Aaron J. Najfach, Catherine B. Almquist, Richard E. Edelmann
Summary: In this study, the effects of manganese on zeolite-supported nickel catalysts in dry reforming of methane were investigated. It was found that the impact of manganese on catalyst activity depends on the type of zeolite support. Generally, manganese decreased the activity of the catalysts, but improved stability over a 24-hour reaction period.
Article
Chemistry, Physical
Robert Franz, Donato Pinto, Evgeny A. Uslamin, Atsushi Urakawa, Evgeny A. Pidko
Summary: This study investigates the use of Ni/Al2O3 catalysts for dry reforming of methane, with a focus on the effects of different promoters on catalyst stability. Higher iron loading on the catalyst leads to lower coke formation during dry reforming. Additionally, promoters with high CO2 affinity can accelerate catalyst oxidation during regeneration, ultimately leading to sintering and increased coke formation. Promoters with significant CO2 interaction are more effective on sintered catalyst samples compared to unpromoted Ni/Al2O3.
Review
Chemistry, Physical
Fariborz Sharifianjazi, Amirhossein Esmaeilkhanian, Leila Bazli, Sara Eskandarinezhad, Samad Khaksar, Parisa Shafiee, Mohammad Yusuf, Bawadi Abdullah, Peyman Salahshour, Farnaz Sadeghi
Summary: This paper reviews the recent advances in Ni- and Co-based nanocatalysts for dry reforming of CH4, including the use of different supports, promoters, and new structures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yang Liu, Yong Chen, Zirui Gao, Xiao Zhang, Lejian Zhang, Meng Wang, Bingbing Chen, Yanan Diao, Yilong Li, Dequan Xiao, Xinping Wang, Ding Ma, Chuan Shi
Summary: In this study, a controlled 'dissolution-recrystallization' method was developed to embed high loading and uniform Ni NPs into the shell of hollow silicalite-1 (S-1) zeolite. The Ni NPs maintained a size of about 4-5 nm with increasing Ni loading from 3% to 20%, and exhibited a high reaction rate and density of active sites in the dry reforming of methane reaction. The embedded structure also showed good stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Hiroyasu Fujitsuka, Takahito Kobayashi, Teruoki Tago
Summary: The study focused on the development of Ni-based catalysts with high thermal stability and suppression of coke formation for dry reforming of methane (DRM). The encapsulation structure of Ni nanoparticles in porous supports was found to be effective for enhancing DRM activities. Ni@Silicalite-1 exhibited stable and high DRM activity with minimal coke formation, outperforming other Ni-based catalysts.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Environmental
Gabriela Grzybek, Magdalena Greluk, Piotr Patulski, Pawel Stelmachowski, Karolina Tarach, Grzegorz Slowik, Marek Rotko, Susana Valencia, Fernando Rey, Kinga Gora-Marek
Summary: The focus of the ongoing global energy transformation is on hydrogen production in the ethanol steam reforming (ESR) process. Researchers have successfully developed a cobalt catalyst based on the ZSM-5 zeolite support, and analyzed its performance using various physicochemical characterization methods and real-time UV-Vis and FT-IR spectroscopy studies in the ESR conditions. The influence of potassium introduction and the impact of zeolite acidity on the cobalt phase oxidation state were also investigated. The study results challenge the existing paradigm of low activity and stability of zeolite-based ESR catalysts, and provide hope for the development of competitive catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Xianhua Wang, Chun Wang, Yue Liu, Xiong Zhang, Haiping Yang, Yingquan Chen, Hanping Chen
Summary: A micro-mesoporous Ni/ZSM-5 (ST) catalyst prepared with starch template showed high activity for catalytic cracking of toluene. Three metal promoters, Fe, Co, and Ce, were used to prepare nickel-based bimetallic catalysts to improve the stability of the Ni/ZSM-5 (ST) catalyst. Among them, Ni-Co/ZSM-5 (ST) catalyst exhibited the best performance with excellent anti-carbon deposition characteristics.
Article
Energy & Fuels
Junjie Wen, Yu Xie, Yanping Ma, Haiyang Sun, Huimin Wang, Mo Liu, Qiulin Zhang, Jianjun Chen
Summary: Ni-CeZrAl catalyst prepared by co-precipitation method demonstrated high performance in dry reforming of methane, with the highest methane conversion reaching 38.1%. The superior catalytic behavior was attributed to the high dispersion of surface Ni-0 active phase, abundant oxygen vacancies, and basic sites. In contrast, Ni-CeAl and Ni-CeZr showed inferior catalytic performance due to weak interaction and fewer active sites.
Article
Energy & Fuels
Fatemeh Zarei-Jelyani, Fatemeh Salahi, Mohammad Farsi, Mohammad Reza Rahimpour
Summary: Steam methane reforming is an important reaction for producing environmentally-friendly hydrogen from methane. In this study, Ni-Co co-impregnated catalysts were synthesized using a hollow sphere alumina support, leading to improved stability and performance. Among the catalysts tested, Ni-2-Co-1/H-Al2O3 showed the highest methane conversion and hydrogen yield at 700 ℃.
Article
Engineering, Environmental
Sungjoon Kweon, Sohun Oh, Siyeon Lee, Hyung-Ki Min, Min Bum Park
Summary: In this study, magnesium silicate delaminated MWW layers with two-dimensional crystal morphology were successfully synthesized. The crystal structures of Mg-DMLs and their magnesium content and basicity were found to change with increasing hydrothermal temperature. The X-ray photoelectron spectroscopy study showed the impact of magnesium species abundance on catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ningbo Gao, Mwenya Humphrey Milandile, Ayesha Tariq Sipra, Sheng Su, Norbert Miskolczi, Cui Quan
Summary: This study developed a new catalyst to produce syngas through the co-pyrolysis of municipal solid waste and biomass. It offers a sustainable approach to waste management and energy production by utilizing valuable resources and reducing the concentration of complex compounds and heavy hydrocarbons.
Review
Chemistry, Physical
Rifat Mehdi, Asif Hussain Khoja, Salman Raza Naqvi, Ningbo Gao, Nor Aishah Saidina Amin
Summary: This article provides a detailed review of surface modification methods and the application of modified BC for the synthesis of electrodes in supercapacitors. By improving the surface features and structure of biochar, enhanced electrochemical performance can be achieved.
Article
Chemistry, Analytical
Ayesha Tariq Sipra, Lianhang Xu, Cui Quan, Jiawei Wang, Ningbo Gao
Summary: This study investigates the energy storage potential of waste plastics-derived carbon nano-materials (CNMs), pyrolyzed directly on nickel foam coated with nickel alumina catalyst. The effect of increasing nickel to aluminum molar ratio on energy storage capacity is studied, and the results show that a molar ratio of 0.1 has the highest specific capacitance. The fabricated electrode using this method exhibits stability, durability, and higher performance than commercial CNMs, without the need for post-treatment. Therefore, this study presents a new approach to fabricating environmentally friendly and economically effective supercapacitors.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Analytical
Cui Quan, Yingying Zhou, Chunfei Wu, Guoren Xu, Dongdong Feng, Yu Zhang, Ningbo Gao
Summary: Anaerobic digestion of agricultural waste can produce biogas as renewable energy source, along with a large amount of solid digestate. This study explores the fabrication of activated carbon from solid digestate using phosphoric acid activation. The influence of H3PO4/digestate char impregnation ratio on the properties of activated carbon was evaluated, and its potential for CO2 capture was examined. The results showed that an appropriate ratio of H3PO4/digestate char can promote the formation of pore structure and achieve high surface area.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Engineering, Marine
Yongtao Zhang, Ning Li, Ningbo Gao, Hong Zhang
Summary: NewWave groups were simulated using a numerical wave tank based on the CFD method. Theoretical results were compared with numerical results of multiple sets of NewWave groups with varying input wave amplitudes. It was found that the theoretical focusing time and location drifted backward as the input wave amplitudes increased. Nonlinearity should not be ignored when simulating NewWave groups for large extreme wave heights. The horizontal and vertical forces on the pile-cap foundation of a sea-crossing bridge caused by the NewWave group were investigated. The research lays a solid foundation for studying the impact of NewWave on offshore structures.
Review
Chemistry, Multidisciplinary
Cui Quan, Yingying Zhou, Jiawei Wang, Chunfei Wu, Ningbo Gao
Summary: Carbon capture and sequestration technologies are crucial for reducing CO2 emissions and mitigating global warming. Carbon-based materials, produced from biomass through technologies like pyrolysis and hydrothermal carbonization, have been identified as effective tools in CO2 reduction. This review analyzes recent research on the use of biomass-based materials for CO2 capture, focusing on biomass conversion processes and carbon material modification methods. The mechanisms of CO2 capture and the potential future research directions are also discussed.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Agricultural Engineering
Cui Quan, Weiding Wang, Jinzhan Su, Ningbo Gao, Chunfei Wu, Guoren Xu
Summary: This study used Camellia oleifera cake to prepare activated carbon for nickel removal. The activated carbon with NaOH activation showed the highest specific surface area and pore volume. The adsorption of Ni(II) on the activated carbon is better suited by the pseudo-second-order model, and ion precipitation is the adsorption mechanism.
BIOMASS & BIOENERGY
(2023)
Article
Energy & Fuels
Cui Quan, Jin Zhang, Zimou Tang, Aneta Magdziarz, Chunfei Wu, Ningbo Gao
Summary: This study investigates the influence of alkali and alkaline earth metals (AAEMs) in the gasification behavior of char derived from solid digestate. It was found that char acid washing reduced the amount of AAEMs, leading to an increase in the activation energy and decrease in reactivity of the gasification reaction, resulting in a longer gasification reaction time for the acid-washed char compared to the original char.
Article
Energy & Fuels
Yihang Duan, Yongan Ning, Ningbo Gao, Cui Quan, Panagiotis Grammelis, Panagiotis Boutikos
Summary: The effect of HT-MC pretreatment method on the pyrolysis characteristics of OS was investigated. The results showed that HT-MC shifted the temperature range in different pyrolysis stages to a lower level and decreased the weight loss rate. The yield of char increased while the yield of oil decreased with increasing hydrothermal temperature.
Article
Engineering, Environmental
Yihang Duan, Ningbo Gao, Cui Quan
Summary: In this study, a novel collaborative process (HCP treatment method) combining hydrothermal treatment and in situ pyrolysis was developed. The influences of hydrothermal temperature and pyrolysis temperature on the product distribution of OS were studied using a self-designed reactor. The results showed that the HCP treatment method achieved higher H2 production and increased content of olefins compared to traditional pyrolysis method. Energy consumption analysis also showed that the HCP treatment is a clean production process of OS with low energy consumption.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Thermodynamics
Zhicheng Xu, Ningbo Gao, Yan Ma, Weitao Wang, Cui Quan, Xin Tu, Norbert Miskolczi
Summary: This paper studied the application of a newly developed integrated pyrolysis and plasma-catalysis system for H2 production from real biomass volatiles, and investigated the roles of temperature and catalyst. The results showed that proper input of discharge power and steam can promote H2 production. After packing bimetallic Ni-Fe/gamma-Al2O3 catalyst into plasma, optimal 47.65 mmol/g of H2 can be attained at reforming temperature of 500 degrees Celsius.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Applied
Liujie Xu, Yi Li, Mingzheng Liao, Qingbin Song, Chao Wang, Jiahong Weng, Ming Zhao, Ningbo Gao
Summary: Waste cooking oil (WCO) energy development is an effective method for producing renewable fuels. This study developed a novel bimetallic Fe(Ni)Ru/ZSM-5 catalyst for H-2-rich syngas production from WCO. The Fe-Ru/ZSM-5 catalyst showed a higher maximum H-2 yield than the Ni-Ru/ZSM-5 catalyst. Fe-Ru/ZSM-5 had a more prolific microporous distribution and improved the conversion ratio of benzene and the anti-carbon deposition capability of the catalyst. The study also discussed the mechanism of bimetallic-loaded catalysts in WCO pyrolysis.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Yu Zhang, Ningbo Gao, Cui Quan, Xueqiang Li, Jie Xu
Summary: The thermal transportation of pulverized semi-coke is critical for coal pyrolysis and downstream application technology. This study investigated the properties and influencing factors of semi-coke during the thermal transportation process. Compared to feed coal, semi-coke had lower total moisture (1.5%), higher calorific value (29.80MJ/kg), and comparable combustion performance parameters, making it a high-quality fuel. The characterization results revealed that semi-coke had a surface covered by a large amount of volatile matter, similar particle size with more concentrated distribution, and a higher degree of aromatization. Thermo gravimetric analysis and tube furnace tests showed that the oxidative combustion intensity of semi-coke increased with specific contact area, temperature, and oxygen concentration. Pulverized semi-coke started oxidative combustion above 350 degrees C in air atmosphere, and significant oxidative combustion occurred when the oxygen concentration exceeded 10% at a constant temperature of 350 degrees C.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Jamilu Salisu, Ningbo Gao, Cui Quan, Jale Yanik, Nancy Artioli
Summary: This study presents a novel model for simulating the co-gasification of rice husk and plastic using Aspen Plus. The model utilizes an artificial neural network (ANN) to predict the pyrolysis process involved in gasification, resulting in a more realistic model. Three ANN models were developed, using inputs of ultimate analysis, higher heating value, and pyrolysis temperature. The developed models showed good agreement with actual data and achieved a maximum hydrogen content of 69.42 vol% at 750 degrees C, with a least root mean square error of 2.62.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Energy & Fuels
Cui Quan, Mingchen Wang, Ningbo Gao, Tianhua Yang, Rundong Li
Summary: This study aims to develop a novel composite catalyst (Ni-Ce-Ca-ceramic membrane) and evaluate its catalytic activity and CO2 adsorption capability during biomass gasification. The results show that the catalyst can not only adsorb CO2 but also promote hydrogen production in biomass gasification and improve the composition of the syngas. By optimizing the operating conditions, the CO2 content can be reduced and the hydrogen yield can be increased. Therefore, this research is of great significance for reducing CO2 emission, promoting the use of biomass energy, and reducing fossil fuel consumption.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
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.