Article
Biochemistry & Molecular Biology
Meiling Zhang, Seung-Hyun Jun, Youngho Wee, Han Sol Kim, Ee Taek Hwang, Jongmin Shim, Sang Youn Hwang, Jinwoo Lee, Jungbae Kim
Summary: In this study, a nanoscale enzyme reactor (NER) for lipase from Rhizopus oryzae was prepared, which showed high stability and activity. The NER demonstrated great potential as an environmentally-friendly nanobiocatalyst for various lipase applications, including biodiesel production.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Energy & Fuels
Ehsan Parandi, Maryam Safaripour, Magda H. Abdellattif, Majid Saidi, Alireza Bozorgian, Hamid Rashidi Nodeh, Shahabaldin Rezania
Summary: The main objective of this study was to produce biodiesel from waste cooking oil using immobilized lipase on a magnetic nanocomposite. The synthesized biocatalyst showed high efficiency in producing biodiesel at lower temperatures and optimal reaction conditions.
Article
Chemistry, Multidisciplinary
Sara Malekkhaiat Haffner, Elisa Parra-Ortiz, Kathryn L. Browning, Elin Jorgensen, Maximilian W. A. Skoda, Costanza Montis, Xiaomin Li, Debora Berti, Dongyuan Zhao, Martin Malmsten
Summary: The study showed that the topography of nanoparticles strongly influences their interaction with bacteria-mimicking lipid bilayers, especially in the presence of antimicrobial peptides. Virus-like mesoporous nanoparticles exhibit a more pronounced membrane disruption after loading with LL-37 compared to smooth nanoparticles.
Review
Energy & Fuels
Francisco Thalysson Tavares Cavalcante, Francisco Simao Neto, Italo Rafael de Aguiar Falca, Jose Erick da Silva Souza, Lourembergue Saraiva de Moura Junior, Patrick da Silva Sousa, Thales Guimaraes Rocha, Isamayra Germano de Sousa, Pedro Henrique de Lima Gomes, Maria Cristiane Martins de Souza, Jose C. S. dos Santos
Summary: This article discusses the key issues in enzyme-catalyzed biodiesel production, including addressing challenges in the production process and improving efficiency. This includes using lipases as substitutes for chemical catalysts and solving these problems by using low-cost raw materials, new supports, and optimized design.
Article
Chemistry, Multidisciplinary
Muhammad Bilal, Ehsan Ullah Rashid, Jakub Zdarta, Jose C. S. dos Santos, Pedro C. B. Fernandes, Hairong Cheng, Teofil Jesionowski
Summary: This paper provides an overview of the development and application of multifunctional magnetic nanobiocatalytic systems. Magnetic nanomaterials, with their substantial surface area and high mass transferring ability, have been widely used as support matrices for enzyme immobilization. Magnetic nanoparticles incorporated biocatalysts exhibit broad-working temperature and pH profiles and enhanced storage and thermal stabilities. The potential applications of magnetic nanobiocatalytic systems in various industrial sectors are comprehensively explored, including wastewater treatment, biodiesel and butanol production, hydrolysis of lignocellulosic biomass, glucose monitoring, fruit juice extraction and clarification, and synthesis of non-natural benzylisoquinoline alkaloid.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Green & Sustainable Science & Technology
Le Zhong, Xiaobo Jiao, Hongtong Hu, Xuejian Shen, Juan Zhao, Yuxiao Feng, Conghai Li, Yingjie Du, Jiandong Cui, Shiru Jia
Summary: In this study, surfactant activated lipase from Aspergillus oryzae was used to prepare magnetic hybrid nanoflowers with Fe3O4 magnetic nanoparticles embedded, showing high catalytic efficiency, tolerance, and reusability. The magnetic hybrid nanoflowers exhibited excellent performance in producing biodiesel from soybean oil, with a high yield even after multiple cycles of reuse.
Article
Chemistry, Applied
Giulio Pota, Aurelio Bifulco, Dambarudhar Parida, Shanyu Zhao, Daniel Rentsch, Eugenio Amendola, Valeria Califano, Aniello Costantini
Summary: Hydrophobic wrinkled silica nanoparticles were prepared through surface functionalization, and lipase immobilization in open active conformation was facilitated by interfacial activation. The effects of support hydrophobicity and n-hexane addition on lipase adsorption were investigated in this study.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Energy & Fuels
Mohsin Raza, Labeeb Ali, Abrar Inayat, Lisandra Rocha-Meneses, Shams Forruque Ahmed, Md Mofijur, Farrukh Jamil, Chukwuma Leonard Azimoh
Summary: Biodiesel is a sustainable energy substitute with environmentally friendly characteristics. Immobilized-enzyme technology improves the stability, reactivity, and reusability of biodiesel production. The potential and importance of immobilized-enzyme technology in biodiesel production are significant.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Brandon Lowe, Jabbar Gardy, Ali Hassanpour
Summary: There is an urgent need to reduce global greenhouse gas emissions, but the decarbonization of the transportation industry has been slow. Nanomaterials offer a potential solution for chemical catalysis in biodiesel production. Acidic sulfated nanocatalysts have shown promise, but further research is needed.
Article
Green & Sustainable Science & Technology
Xiyue Cao, Hui Xu, Fosheng Li, Yulu Ran, Xiaorui Ma, Yu Cao, Qingrui Xu, Dairong Qiao, Yi Cao
Summary: A method for direct transesterification of wet yeast using immobilized lipase was developed in this study, which improved the efficiency of biodiesel production. The immobilized lipase covalently cross-linked with Fe3O4@SiO2-CHO showed high enzyme activity and immobilization rate. The optimal temperature for the immobilized lipase was 60 degrees C, and it still retained 80% activity after storage.
Article
Engineering, Chemical
Vasudeo Zambare, Rutuja Patankar, Bhushan Bhusare, Lew Christopher
Summary: This work reviews the recent progress in feedstock development for biodiesel production, lipase research, and development, as well as current challenges and opportunities for biodiesel commercialization from technological, economic, and social perspectives. It critically discusses biodiesel producers, markets, challenges, and opportunities, including environmental considerations.
Article
Engineering, Environmental
Nijad Ishak, Jane Estephane, Eliane Dahdah, Lena Moussa Chalouhi, Salim Nassreddine, Bilal El Khoury, Samer Aouad
Summary: In this study, a highly efficient biodiesel catalyst was prepared by impregnating KOH on fumed silica followed by calcination, with the 30% KOH/FS catalyst showing the best performance. Optimum conditions for biodiesel production over this catalyst were identified, leading to a final FAME yield of 99.9%. The catalyst showed slight deactivation after 3 consecutive runs, but coating the catalyst with biodiesel improved its stability, maintaining a maximum FAME yield of 99.9% over multiple runs. The properties of the produced biodiesel met ASTM requirements, demonstrating the catalyst's potential for industrial application in transesterification of waste cooking oil.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Mu Naushad, Tansir Ahamad, Mohammad Rizwan Khan
Summary: In this study, novel magnetic ionic liquid based nanocomposites were fabricated for the efficient production of biodiesel from palm oil. The results showed that [NiFe2O4@BMSI]HSO4 exhibited higher catalytic performance and reusability compared to NiFe2O4@BMSI]Br, making it a promising catalyst for transesterification reactions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Green & Sustainable Science & Technology
Hyunjun Ko, Mi-Jin Kim, Hyun-Jin Kim, Jin Kang, Ho-Yeon Lee, Jin Hyuk Lee, Jung-Hoon Bae, Bong Hyun Sung, Jung-Hoon Sohn
Summary: Food waste oil is a suitable raw material for biodiesel production, but water inhibits the reaction. By developing a mutant lipase CALB1422, ester synthesis can be catalyzed in the presence of water, resulting in higher conversion rates and yields of biodiesel from waste oil.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Pingbo Zhang, Peng Liu, Mingming Fan, Pingping Jiang, Agus Haryono
Summary: Magnetic mesoporous solid acid catalysts, modified by two different methods, exhibited ordered mesoporous structure and excellent paramagnetic properties, leading to high catalytic activity in the transesterification of palm oil with methanol for biodiesel production. Particularly, the catalyst prepared by the grafting method showed excellent reusability with over 80% biodiesel yield after 6 cycles, demonstrating promising industrial application prospects.
Article
Pharmacology & Pharmacy
N. Ghanbari, Z. Salehi, A. A. Khodadadi, M. A. Shokrgozar, A. A. Saboury, F. Farzaneh
Summary: In this study, Tryptophan-conjugated graphene quantum dots (Trp-GQDs) loaded with Curcumin (Cur) as an anticancer agent were successfully fabricated and evaluated for their drug loading capacity, release kinetics, and cytotoxicity on human breast cancer cells. The nano-assemblies showed high drug loading capacity, pH-sensitive release, and non-toxicity on MCF-7 cells, indicating their potential as promising candidates for drug delivery applications.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Zahra Farshidrokh, Mohammad Reza Khani, Abbasali Khodadadi, Mahtab Gharibi, Babak Shokri
Summary: The study investigated dry reforming of methane (DRM) over Ni/gamma-MgO catalysts in a coaxial dielectric barrier discharge (DBD) reactor and compared it with DRM without catalysts. The presence of catalysts in the plasma reactor increased the yield and selectivity of H-2 and CO. The reduced catalyst Ni/7%CeO2/MgO showed excellent CH4 conversion performance, providing a new approach to further improve the methane conversion rate.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Materials Science, Biomaterials
Narges Ghanbari, Zeinab Salehi, Abbas Ali Khodadadi, Mohammad Ali Shokrgozar, Ali Akbar Saboury
Summary: A novel targeted, trackable, and pH-responsive drug delivery system based on glucoseamine conjugated graphene quantum dots was developed for breast cancer cell-targeted therapy. Fluorescence microscopy and flow cytometry confirmed higher cellular internalization and cytotoxicity of the targeted nanocarrier compared to the non-targeted one.
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Reza Khaleghi Abasabadi, Abbas Ali Khodadadi, Yadollah Mortazavi
Summary: The study explores the impact of different types of carbon-nitrogen bonds on the activity and selectivity of the palladium active phase in the hydrogenation of cinnamaldehyde. Pyridinic nitrogen has a positive effect on the uniform distribution of Pd. The catalyst treated at 500 degrees Celsius shows high conversion and selectivity in the reaction.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Physical
Hadis Mousavi, Yadollah Mortazavi, Abbas Ali Khodadadi, Mohammad Hossein Saberi, Samira Alirezaei
Summary: In this study, cheap sensors were used to detect pollutants in automotive exhaust gases. It was found that the reduced Pt/SnO2 sample showed significantly enhanced stable responses to CO and greater selectivities to CO compared to C3H8 and NO. This was attributed to the formation of a SnO-SnO2 p-n junction.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Mijin Kim, Jens-Uwe Repke, Reinhard Schomaecker, Abbas Ali Khodadadi, Guenter Wozny, Oliver Goerke, Hamid Reza Godini
Summary: A pseudo-homogeneous model was used to represent the thermal reaction performance of an oxidative coupling of methane (OCM) packed-bed catalytic reactor, taking into account the axial and radial heat and mass transfer characteristics. The model-based analysis was supported by extensive experimentation, aiming to differentiate the direct contribution of catalytic reactions and indirect contribution of the reactor's structural characteristics on the overall OCM reactor performance.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Thermodynamics
Mohammad Saleh Khodaparasti, Mohammad Reza Shirazvatan, Omid Tavakoli, Abbas Ali Khodadadi
Summary: Co-pyrolysis of microalgae Chlorella vulgaris and municipal sewage sludge was studied in a fixed-bed reactor to investigate the effects of temperature, mixing ratio, and Argon flow rate on pyrolysis products. The process was optimized using response surface methodology, and artificial neural network models were developed to simulate and predict pyrolysis yields. The study found that the mixing ratio had the most significant impact on bio-oil yield, while temperature had the highest influence on both biochar and biogas efficiency. The results demonstrate the potential for co-pyrolysis of microalgae and sewage sludge as a sustainable waste-to-energy conversion process.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Environmental Sciences
Zahra Eshaghi Gorji, Abbas Ali Khodadadi, Siavash Riahi, Timo Repo, Yadollah Mortazavi, Marianna Kemell
Summary: In this study, a series of organic compounds were immobilized on N-doped graphene quantum dots to prepare a multifunctional organocatalyst for the coupling reaction between CO2 and propylene oxide. The proposed catalysts demonstrated high activity and yielded excellent results under optimal conditions.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Chemistry, Physical
Fatemeh Gashoul Daresibi, Abbas Ali Khodadadi, Yadollah Mortazavi, Simo Huotari, Mikko Ritala
Summary: This study focuses on the CO2-oxidative dehydrogenation of propane (CO2-ODHP) using CrOx/SiO2 catalyst synthesized through atomic layer deposition (ALD) technique. The ALD catalysts exhibited higher acidity and reducibility compared to impregnation catalysts, as well as better dispersion of chromium oxide particles. The CO2-ODHP reactions using the ALD catalysts demonstrated improved propane conversion and propylene yield.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Analytical
Mehrdad Asgari, Fahimeh Hooriabad Saboor, Seyed Parsa Amouzesh, Martin Watt Coull, Abbas Ali Khodadadi, Yadollah Mortazavi, Takeo Hyodo, Yasuhiro Shimizu
Summary: SiO2/ZnO core/shell sensors were synthesized using ultrasonic-assisted deposition-precipitation method. The addition of silica as the core material enhanced the selectivity, stability, and reversibility of the sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Fatemeh Gashoul Daresibi, Abbas Ali Khodadadi, Yadollah Mortazavi
Summary: Ga2O3 was synthesized on a gamma-Al2O3 support using the atomic layer deposition method (ALD) for the CO2-oxidative dehydrogenation of propane (CO2-ODHP). The Ga loading was controlled by the number of ALD cycles, ranging from 1 to 2.9 wt%. The ALD catalysts exhibited higher activity and selectivity in the CO2-ODHP reaction compared to catalysts prepared with impregnation method, attributed to the higher surface total moderate acidity, Ga-O-Al linkages, and Ga2O3 dispersion. The ALD-3C catalyst, with 2.9% Ga loading, achieved 38% conversion and 82% selectivity to propylene after 120 minutes of CO2-ODHP reaction at 600 degrees Celsius, corresponding to a 96% improvement in propylene yield.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Hamide Mohammad Aliha, Abbas Ali Khodadadi, Yadollah Mortazavi, Mohammad Nader Lotfollahi
Summary: The aim of this study is to investigate a new method of fabricating SnO2/polyaniline (PAni) nanocomposite sensors for detecting ammonia at room temperature. The synthesis of PAni is conducted through oxidative polymerization, and SnO2/PAni hybrid nanocomposites with varying percentages of polymer are fabricated using a deposition-precipitation method in the presence of SnCl4 solution. XRD, BET, FTIR, Raman, TGA, and FESEM tests are carried out to characterize the produced powders. The results show that increasing the PAni content in the nanocomposites leads to a decrease in SnO2 crystallite size, an increase in surface area, and improved thermal stability. The SnO2/8 wt% PAni exhibits the highest sensitivity, with a response of approximately 187% for 100 ppm NH3 at room temperature. The optimal heteronucleation and decoration of SnO2 on the PAni surface enhance the sensor's response. Additionally, the sensor demonstrates selectivity in the presence of interfering gases such as CO, ethanol, methane, toluene, and trichloroethylene.
APPLIED SURFACE SCIENCE
(2023)
Article
Business
Mohammad Saleh Khodaparasti, Reza Khorasani, Omid Tavakoli, Abbas Ali Khodadadi
Summary: The effect of co-pyrolysis of municipal sewage sludge (MSS) and microalgae Chlorella Vulgaris (MCV) on pyrolysis products and synergistic effects was investigated. Changes in gas components at different temperatures and reaction times were analyzed using GC analysis. The co-pyrolysis bio-oil was found to be rich in fatty acids and amides compounds, providing a new direction for the high value-added utilization of biomass.
JOURNAL OF BUSINESS RESEARCH
(2023)
Article
Chemistry, Physical
S. Samaneh Bahrani, Abbas Ali Khodadadi, Yadolah Mortazavi
Summary: It has been found that selective deposition of NiO on MoOx/?-Al2O3 enhances the formation of active NiMoS catalytic phase, leading to improved hydrodesulfurization activity. Catalysts prepared by selective atomic layer deposition (S-ALD) showed higher desulfurization conversions at lower reaction temperatures and pressures compared to those prepared by impregnation. HR-TEM and XPS characterization revealed that the enhanced activity of S-ALD catalysts is attributed to the formation of more active NiMoS catalytic phase with higher sulfidability than their impregnation counterparts.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Nasim Afzali, Mostafa Torka Beydokhti, Abbas Ali Khodadadi, Yadollah Mortazavi
Summary: In this study, flower-like Ni-doped SnS2 was synthesized using a hydrothermal method, and its oxidation extent was controlled by air oxidation. The results showed that partial oxidation increased the surface area of SnS2 and enhanced its photocatalytic activity. Tuning the oxidation extent and Ni doping can regulate the band gap and defect recombination rate of heterostructures. The Ni-doped 0.34 wt% SnS2 with 43% oxidation showed the highest photocatalytic conversion.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
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.