Article
Materials Science, Ceramics
Josefa Ortiz-Bustos, Isabel del Hierro, Yolanda Perez
Summary: The incorporation of iron and sulphate ions on TiO2 nanoparticles improved the catalytic performance, and a multifunctional and visible-light active photocatalyst was designed to remove pollutants from transportation fuels and water. Doping with a low amount of iron enhanced the photocatalytic performance, with the 1.2%S-0.5%Fe-TiO2 photocatalyst showing the highest activity under visible light irradiation. The improved electron charge transfer behavior of this photocatalyst was confirmed by electrochemistry measurements, and the stability and recyclability of the best photocatalyst were evaluated.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Suting Xie, Xinyu Zhao, Dongxiao Wang, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Ying Liang, Hou Chen, Shaojun Guo
Summary: Photocatalytic aerobic oxidation desulfurization (PAODS) is a sustainable alternative for desulfurization, but current photocatalysts have limitations in generating reactive oxygen species and sulfide oxidation rate. Researchers have developed a MoOx nanocluster decorated Mo-doped TiO2 catalyst that efficiently promotes the photocatalytic oxidation of sulfides, achieving a record oxidation activity.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Energy & Fuels
Xiaoyu Zhou, Hang Liu, Sixiao Liu, Lei Zhang, Tianyi Wang, Chengyin Wang, Dawei Su
Summary: By using the α-Fe2O3/g-C3N4/HNTs composite material, efficient photocatalytic desulfurization of dibenzothiophene in model oil under visible light can be achieved. The unique structure of the composite material promotes the transfer and separation of photogenerated carriers, thereby enhancing the efficiency of photocatalytic reactions.
Article
Chemistry, Physical
Yue Liu, Jing-zhi Tian, Yong-jie Zheng, He-shan Zheng, Shuo Li, Tao Jing, Hong-rui Zhang, Jing-ying Shao
Summary: A core-shell porous catalyst coated with TiO2-fibrous silica (KCC-1) was prepared and showed excellent catalytic desulfurization performance. The unit desulfurization rate was significantly improved without additional oxidants. The adsorption-catalysis-resorption desulfurization system was effective, enhancing the reaction rate and achieving selective adsorption and coupling desulfurization. Furthermore, the spent catalyst could be regenerated without a decrease in desulfurization rate.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Armin Raeisi, Alireza Najafi Chermahini, Marzieh Esmaeilzadeh Khabazi, Mohamad Mohsen Momeni, Rafael Luque, Antonio Pineda, Enrique Rodriguez Castellon, Carolina Vargas Fernandez
Summary: This investigation successfully removes sulfur-based compounds by a combination of absorptive and oxidative desulfurization processes using a series of novel Bi-based bifunctional photo electrocatalysts. The results showed that the catalysts had higher efficiency in absorptive desulfurization and better results in oxidative desulfurization. Among the catalysts, photoelectrocatalytic desulfurization performed best in dibenzothiophene removal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Chemical
Ge Zhang, Fan Yang, Xiaodong Liu, Haiyong Zhao, Sai Che, Jianzhong Li, Xingru Yan, Siyuan Sun, Fengjiang Chen, Chong Xu, Hongchen Liu, Qiang Wei, Yongfeng Li
Summary: This study synthesized N, P co-doped porous carbon network as an efficient absorbent for dibenzothiophene (DBT) removal from oil. The unique micro-mesoporous structure ensured shape-selective adsorption and enhanced DBT adsorption strength. The synergistic effect of N, P co-doping greatly reduced the adsorption energy for DBT, showing significant affinity to DBT.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Zahra Khalilian, Alireza Najafi Chermahini, Mohamad Mohsen Momeni, Jaleh Najafi Sarpiri, Majid Motalebian
Summary: TiO2 nanotube arrays were successfully synthesized and used as catalyst for oxidative desulfurization. The results showed high catalytic activity and recyclability under specific conditions.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Environmental Sciences
Xinsheng Li, Shuo Ai, Yongchun Huang, Chengdu Huang, Wanguo Yu, Zhijuan Mao
Summary: In this study, metallic copper loaded on SBA-15 mesoporous silica proved to be an efficient adsorbent for the removal of DBT in fuel oils. Analysis using Raman spectroscopy, XPS, and Auger spectroscopy provided insights into the interaction mechanism between DBT and copper, and the complete recovery of adsorption capacity was achieved successfully.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Taner Sar, Murat Ozturk, Benjamin C. Stark, Meltem Yesilcimen Akbas
Summary: This study investigated improvements in desulfurization of DBT and DBTS by Paenibacillus strains through immobilization and nanoparticle coating, showing promising results for enhancing biodesulfurization efficiency.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Energy & Fuels
Ze Fang, Zhiguo Zhao, Nan Li, Zhexin Zhu, Wangyang Lu, Fengtao Chen, Wenxing Chen
Summary: An environmentally friendly desulfurization technology was developed using a biomimetic catalytic system, ethanol and water solvent, achieving a high removal rate of dibenzothiophene. The research provides a new idea for the design of efficient, energy-saving, and environmentally friendly desulfurization systems.
Article
Energy & Fuels
Fina J. Lesafi, Tatiana Pogrebnaya, Cecil K. King'ondu
Summary: A novel SnO2-MoO3 catalyst was synthesized for oxidative desulfurization of fuel, showing excellent catalytic activity and reusability.
Article
Energy & Fuels
Qingwen Shan, Juan Zhang, Yajuan Wang, Wenqiang Liu
Summary: Two ionic liquid-type UiO-66 (Mod-UiO-66@(IL)) were synthesized by the hydrothermal method for studying the adsorption desulfurization performance of DBT in model oil. Among them, Mod-UiO-66@(IL1) showed the best adsorption performance with a maximum adsorption capacity of 43.52 mg/g for DBT, and also exhibited good removal effect on different sulfur compounds.
Article
Energy & Fuels
M. L. S. N. Vishnu Priya, B. Arunraj, N. Rajesh
Summary: A mesoporous carbon material produced from newspaper waste was utilized for desulfurization, showing efficient removal of DBT and good regeneration properties. Characterization techniques confirmed the effectiveness of the mesoporous carbon in the desulfurization process.
Article
Engineering, Chemical
Juncong Zou, Yan Lin, Shaohua Wu, Mengjie Wu, Chunping Yang
Summary: The developed catalyst Mo/KIT-6-Ti shows excellent oxidative desulfurization performance, achieving efficient conversion of sulfides without the need for organic solvents, demonstrating great potential for practical fuel applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Marzieh Shams Harandi, Esmaeil Shams, Ensiyeh Sharifi, Fariborz Momenbeik
Summary: An extraction-electrooxidation system was introduced for the removal of dibenzothiophene from model fuel, achieving 100% removal efficiency. The method utilizes a polar solvent and electrochemical medium, demonstrating feasibility and innovation for deep desulfurization of liquid fossil fuels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Boqian Jia, Lei Bai, Zheng Han, Ren Li, Junxiu Huangfu, Chongao Li, Jiming Zheng, Yunteng Qu, Kunyue Leng, Yi Wang, Jinbo Bai
Summary: This study predicts the performance of Co, Fe, and Cu single-atom catalysts (SACs) in styrene epoxidation using density functional theory calculations. The results show that the Co-N structure prefers the formation of styrene oxide. Catalytic evaluations confirm this finding, with Co SACs displaying higher selectivity compared to Fe and Cu SACs. Additionally, the activity of Co SAC can be enhanced by constructing unsaturated vacancy-defect cobalt single sites, resulting in excellent conversion and selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Kunyue Leng, Jianting Zhang, Yi Wang, Dingding Li, Lei Bai, Jingbo Shi, Xiaolin Li, Lirong Zheng, Jinbo Bai, Yunteng Qu
Summary: An interfacial cladding strategy is used to construct monodispersed dual-atom metal sites in dual-atom catalysts (DACs), which exhibit remarkable activity in electrocatalytic oxygen reduction reaction, providing a new approach for the design of dual-atom catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Electrochemistry
Dengfeng Yu, Bo Yang, Huimin Liang, Gongyuan Zhao, Hong Zhang, Yuanlin Wang, Ye Sun, Miao Yu
Summary: This study reports the fabrication of Co0.85Se double-walled hollow cages coated by a nitrogen-doped carbon layer as high-performance anode materials for sodium-ion batteries. The double-walled hollow structure with abundant lacunas on the walls provides an increased accessible area, shortened ion transport path, and appropriate buffer space against volume expansion. The C protective layer enhances conductivity, chemical stability, and robustness during charge/discharge process. The Co0.85Se@CN anode exhibits a high reversible capacity and good cycling stability for sodium-ion batteries.
ELECTROCHIMICA ACTA
(2022)
Article
Multidisciplinary Sciences
Zishuai Zhang, Yilong Zhu, Miao Yu, Yan Jiao, Yan Huang
Summary: Rechargeable aqueous metal parallel to I-2 electrochemical energy storage systems offer a cost-effective alternative for grid energy storage. The use of 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) as a negative electrode active material and a KCl/I-2 aqueous electrolyte solution can overcome the drawbacks of metallic deposition and the formation of electrochemically inactive by-products. The proposed system shows promising performance with high discharge capacity and voltage.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yi Li, Weidong Niu, Tao Chen, Ye Sun, Miao Yu
Summary: In this study, a new electrocatalyst, sulfur-deficient tin disulfide covered nitrogen-doped hollow carbon spheres, was reported for CO2 reduction reaction. By combining experimental analysis and calculations, it was found that this material can decrease the reaction barrier, increase CO2 adsorption capacity and affinity with the intermediate, and promote the reaction rate. Under -1.2V potential, the electrocatalyst exhibited high current density and high Faradaic efficiency for formate in a large potential range.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Jianting Zhang, Jingbo Shi, Hang Zhao, Jinbo Bai, Xiaolin Li, Kunyue Leng
Summary: This study reports a crystal growth blocking strategy for the preparation of hierarchical UiO-66 MOFs using a solvent-free method. The addition of FeCl3 limits the overgrowth of UiO-66 crystals, resulting in particles with a size of approximately 12 nm. After removing Fe, these small particles loosely aggregate and gain intercrystalline mesopores. The optimized sample Mes-UiO-66 exhibits a well-developed hierarchical structure, with a BET surface area of 1161.9 m2 g-1 and a mesopore volume of 1.21 cm3 g-1. The catalytic performance and stability of Mes-UiO-66 are demonstrated by the oxidation of DBT, achieving a DBT conversion of over 99% with only a slight decrease after five cycles. This finding provides a novel platform for efficiently fabricating hierarchical MOFs for large-molecule catalysis.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Yi Li, Yanghan Chen, Tao Chen, Guoqiang Shi, Lin Zhu, Ye Sun, Miao Yu
Summary: This study presents a highly efficient strategy for the conversion of CO2 to ethanol, achieving a high yield. By decorating Cu nanosheets with small Cu2S nanocrystals, the electrocatalyst demonstrated a relatively high positive charge on Cu, abundant interfaces, and a non-flat, stepped surface, enhancing the affinity of *CO and decreasing the barrier for *COCO formation. The strategy delivered a high partial current density of approximately 20.7 mA cm-2 and a Faraday efficiency of 46% for ethanol production.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Dingding Li, Run-Xi Zhu, Zheng Han, Lei Bai, Jianting Zhang, Ruixin Xu, Weilong Ma, Liangpeng Nie, Yi Wang, Jinbo Bai, Hang Zhao, Ji-Quan Liu, Kunyue Leng, Ya-Qiong Su, Yunteng Qu
Summary: By modulating the local coordination number of the single-metal sites, single-atom catalysts with a tunable coordination structure have shown promising potential in altering the selectivity of oxygen reduction reaction. In this study, Nb single-atom catalysts (SACs) with external-shell oxygen modulated unsaturated NbN3 and NbN4 sites were prepared. The NbN3 SACs exhibited excellent 2e- oxygen reduction reaction activity, with a close to zero onset overpotential and high H2O2 selectivity. Density functional theory calculations suggested that the unsaturated Nb-N3 moieties and adjacent oxygen groups optimized the interface bond strength of pivotal intermediates for producing H2O2, thus facilitating the 2e- oxygen reduction pathway. These findings provide a novel platform for developing highly active and selectively tunable SACs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Ahmed S. Abou-Elyazed, Ebtehal A. Shaban, Yinyong Sun, Ahmed M. El-Nahas, Tahani I. Kashar
Summary: It has been found that the introduction of tin species into the structure of UiO-66(Zr) can enhance its catalytic performance. UiO-66(Zr) with tin sites was successfully synthesized under solvent-free conditions, exhibiting a large specific surface area and pore volume, as well as an increased number of acid sites. Compared to UiO-66(Zr), UiO-66(Zr/Sn) shows higher catalytic efficiency in the esterification reaction.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zheng Han, Yi Wang, Jiming Zheng, Ren Li, Boqian Jia, Dingding Li, Lei Bai, Xuting Guo, Lirong Zheng, Jinbo Bai, Kunyue Leng, Yunteng Qu
Summary: Understanding the dynamic evolution from metal ions to single atoms is crucial for the rational synthesis of single atom catalysts (SACs) to prevent metal sintering during pyrolysis. This study reveals a two-step process for the formation of SACs, involving metal sintering into nanoparticles at lower temperatures and the conversion of nanoparticles into metal single atoms at higher temperatures. The conversion mechanisms involve carbon reduction for ion-to-nanoparticle conversion and the generation of more thermodynamically stable configurations for nanoparticle-to-single atom conversion. Based on this understanding, a two-step pyrolysis strategy is developed to fabricate Cu SACs with excellent oxygen reduction reaction performance.
Article
Biophysics
Hong Zhang, Chenggang Zhang, Zhaotong Wang, Wenwu Cao, Miao Yu, Ye Sun
Summary: We report the ultrasensitive and anti-interference detection of SARS-CoV2 spike protein in untreated saliva using an antibody/aptamer-free (AAF) SERS substrate, applying the evanescent field induced by the high-order waveguide modes of well-defined nanorods for SERS for the first time. A detection limit of 3.6 x 10-17 M and 1.6 x 10-16 M are achieved in phosphate buffered saline and untreated saliva, respectively, which are three orders of magnitude better than the best records from AAF substrates. This work unlocks an exciting path for designing AAF SERS substrates for ultrasensitive biosensing, not limited to the detection of viral antigens.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Dengfeng Yu, Huimin Liang, Gongyuan Zhao, Hong Zhang, Xinsong Wei, Di Zhao, Miao Yu, Ye Sun
Summary: The hierarchical, hollow structured nanocages of nickel-cobalt bimetallic selenide covered by nitrogen-doped carbon shell (NiCo3Se4@NC) show enhanced rate performance and cycle stability as an anode material for sodium-ion batteries, thanks to the short transfer distance for Na+ ions, buffer of volume expansion, and improved charge transfer.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Zhuo Li, Zhaoyan Gao, Jinping Hu, Cristina Mattioli, Pengcheng Ding, Wenpeng Xu, Ye Sun, Junjie Li, Dingyong Zhong, Yudong Huang, Geng Li, Fei Song, Andre Gourdon, Lev N. Kantorovich, Flemming Besenbacher, Miao Yu
Summary: In this study, we report the large-distance confinement of electronic states in a single-layer graphene (SLG) by an extended molecular adlayer. Despite being 6.7A away from Cu(111) with the graphene sheet in between, the defined corrals can still effectively trap the free electron gas of the Cu surface, lifting the dispersive band of Cu. The migrated electrons from the Cu substrate to SLG are shown to accumulate above the SLG surface instead of at the Cu-SLG interface. The physisorbed molecular layer sharpens the dispersion of graphene electronic states. These results open up new possibilities for the design of hybrid electronic devices and graphene modification.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yi Li, Yanghan Chen, Tao Chen, Guoqiang Shi, Lin Zhu, Ye Sun, Miao Yu
Summary: By decorating small Cu2S nanocrystals uniformly on Cu nanosheets, this electrocatalyst integrates three desirable features, including a high positive local charge on Cu (Cu delta+), abundant interfaces between Cu delta+ and zero-valence Cu0, and a non-flat, stepped catalyst surface. This promotes the affinity of *CO, decreases *COCO formation barrier, and thermodynamically prefers *CH2CHO-to-*CH3CHO conversion. As a result, a high partial current density of about 20.7 mA cm-2 and a Faraday efficiency of 46% for C2H5OH are achieved at -1.2 V vs reversible hydrogen electrode in an H-cell containing a 0.1 M KHCO3 solution. This study proposes an efficient strategy for high-yield CO2-to-C2H5OH conversion, highlighting the potential for industrial production of alcohol and related products from CO2.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Xin Qiao, Xiaoliang Wang, Haixu Chen, Yan Huang, Shangsong Li, Luxuan Li, Yinyong Sun, Xiaoman Liu, Xin Huang
Summary: Modulated membrane functionalization is crucial for the application of hollow microcompartments. This study demonstrates the generation of phospholipid hybrid proteinosomes, which possess the combined advantages of liposomes and proteinosomes. The incorporation of phospholipids improves membrane fluidity and permeability, enabling stepwise release of encapsulated compounds and cascaded enzymatic reactions. These phospholipid hybrid proteinosomes can serve as an improved microcompartmental model for advanced artificial cell design and microreactor applications.
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.
