Article
Chemistry, Physical
Ahmad S. Darwish, Farah Abu Hatab, Tarek Lemaoui, Omar A. Z. Ibrahim, Ghaiath Almustafa, Botagoz Zhuman, Samah E. E. Warrag, Mohamed K. Hadj-Kali, Yacine Benguerba, Inas M. Alnashef
Summary: Eutectic solvents have been studied for fuel purification, with this work focusing on the extraction of multiple aromatics from n-decane using a salt-acid-based ES. Experimental and theoretical studies showed different extraction mechanisms for different impurities, with full recovery achieved for pyrrole and quinoline after 2 stages of extraction and lower efficiencies for thiophene and toluene.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Fatemeh Arian, Mosadegh Keshavarz, Haleh Sanaeishoar, Neda Hasanzadeh
Summary: Three novel sultone based Bronsted acidic ionic liquids were prepared and characterized, showing good catalytic efficiency and thermal stability for the synthesis of polycyclic compounds. These introduced acidic ionic liquids are green, environmentally friendly, task specific, and easily recoverable up to six consecutive runs without significant decrease in catalytic activity.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Layla A. Taib, Mosadegh Keshavarz
Summary: Three novel 1,4-butane sultone-based Bronsted acidic ionic liquids with Perchlorate counter-anion were synthesized in this study, showing good thermal stability and high catalytic efficiency. These acidic ionic liquids are environmentally friendly, task-specific and easily separable from organic phase, providing target products in short reaction times at high yields.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Energy & Fuels
Wenlei Xie, Hao Wang
Summary: The study aims to prepare an efficient and magnetically separable Bronsted acid catalyst for converting low-quality oils to biodiesel. By coating silica shells on magnetic Fe3O4 nanoparticles and grafting copolymerization of dual acidic ionic liquids, a solid catalyst with strong catalytic activity was obtained. This catalyst shows good catalytic activities towards transesterification of soybean oil and esterification of free fatty acids, making it a robust solid acid catalyst for one-pot biodiesel production from low-quality acidic oils.
Article
Energy & Fuels
Guojia Yu, Dongyu Jin, Fan Zhang, Qunsheng Li, Zhiyong Zhou, Zhongqi Ren
Summary: In this study, a novel green deep eutectic solvent (DES) was proposed and successfully applied in fuel desulfurization. The results showed that the DES exhibited excellent desulfurization efficiency and strong acidity, achieving superior desulfurization effect through synergistic effect. Moreover, by adjusting the viscosity of DES, the treatment efficiency was further improved and the amount of DES used was reduced.
Article
Energy & Fuels
Subhajit Kundu, Debarati Mitra
Summary: A novel diesel desulfurization process at ambient temperature was developed without using catalyst, which involved solvent extraction using an ionic liquid to eliminate sulfur compounds, with the synthesized ionic liquid showing a high biodegradability rate.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Engineering, Chemical
Tarek Lemaoui, Yacine Benguerba, Ahmad S. Darwish, Farah Abu Hatab, Samah E. E. Warrag, Maaike C. Kroon, Inas M. Alnashef
Summary: This study investigated the application of deep eutectic solvents (DESs) in the simultaneous dearomatization, desulfurization, and denitrogenation of fuels, particularly diesel. It found that acidic DESs can effectively remove pyrrole and pyridine, and achieve high extraction efficiencies for toluene and thiophene.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Agricultural Engineering
Morteza Maleki, Shohreh Ariaeenejad, Ghasem Hosseini Salekdeh
Summary: This study identified two cellulase enzymes with ionic liquid tolerance, which exhibited higher activity and improved stability in the presence of ionic liquids. These enzymes could enhance the saccharification rate of biomass in a one-pot wash-free method, making them attractive candidates for industrial applications.
BIORESOURCE TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Omid Azadi, Alireza Taheri, Ali Babaei
Summary: In this study, a catalytic oxidative desulfurization (CODS) process using an organic-inorganic hybrid nanocatalyst was proposed to remove thiophene (T) and benzothiophene (BT) from diesel fuel. The nanocatalyst, synthesized using CuO nanoparticles as a support and a mono copper-substituted polyoxotungstate ([PW11CuO39]) as an active component, showed high desulfurization efficiency. The experimental conditions for the CODS process were optimized using response surface methodology, and a removal efficiency of 98% for thiophene and 99% for benzothiophene was achieved. The synthesized heterogeneous nanocatalyst could be separated and recycled successfully, making it a promising strategy for the preparation of clean gasoline fuel.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Qinghua Liu, Chengmin Gui, Guoxuan Li, Zhigang Lei
Summary: In order to improve the quality of fluid catalytic cracking (FCC) diesel, promising neoteric solvents called ionic liquids (ILs) were used to extract certain compounds from FCC model oil. The selection of the most suitable extraction solvent was based on various factors including thermodynamic and physical properties. Experimental data and theoretical calculations were used to understand the extraction mechanism and differences in efficiency for different compounds.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Ao Li, Hongyan Song, Hong Meng, Yingzhou Lu, Chunxi Li
Summary: The preparation of SiO2@V-PIL nano core-shell catalyst can significantly enhance the oxidation rate of sulfides and retain 99% of catalytic performance after 5 recycled uses, showing potential for upgrading the catalytic activity of composite catalysts.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Engineering, Chemical
Sarrthesvaarni Rajasuriyan, Hayyiratul Fatimah Mohd Zaid, Mohd Faridzuan Majid, Raihan Mahirah Ramli, Khairulazhar Jumbri, Jun Wei Lim, Mardawani Mohamad, Pau Loke Show, Brian Yuliarto
Summary: The biggest challenge faced in oil refineries is the removal of sulfur compounds in fuel oil. Researchers have studied a new desulfurization process that combines extractive desulfurization and oxidative desulfurization using a combination of ionic liquids and a photocatalyst to achieve efficient desulfurization.
Review
Chemistry, Analytical
Muhammad Shahid Nazir, Sadaf Ahmad, Zaman Tahir, Sadaf ul Hassan, Zulfiqar Ali, Majid Niaz Akhtar, Kashuf Azam, Mohd. Azmuddin Abdullah
Summary: This review paper highlights recent advancements in the desulfurization of diesel oil, aiming to explore less energy-intensive and more economical processes. The main techniques for desulfurization of diesel oil include hydrodesulfurzation, oxidative desulfurization, biodesulfurization, ionic liquid desulfurization, and adsorption desulfurization. Adsorptive desulfurization technique is considered greener, less energy intensive, and more economical compared to other desulfurization techniques.
CURRENT ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Chunxiao Ren, Zhiyuan Wang, Qingwei Gao, Jisheng Li, Siqi Jiang, Qizhong Huang, Ye Yang, Jiahui Zhang, Yajing Wang, Yufeng Hu, Zhichang Liu, Xin Guo
Summary: Exploring environmentally friendly, efficient, cheap and recyclable catalysts are essential for the development of green, sustainable and mild processes for the liquid-phase Beckmann rearrangement. In this study, a novel caprolactam-based Bronsted acidic ionic liquid ([CPL][2MSA]) was developed as a catalyst and mild reaction medium for the conversion of cyclohexanone oxime (CHO) to caprolactam (CPL). The [CPL][2MSA] exhibited high conversion (100%) and selectivity (95%) without any other co-catalysts or metals. The occurrence route of the liquid-phase Beckmann rearrangement for CHO in [CPL][2MSA] was revealed by in situ FT-Raman, and the dominating H-bond combination between CHO and [CPL][2MSA] was confirmed by COSMO-RS model. The [CPL][2MSA] with acidic catalytic active species is an environmentally friendly and efficient candidate for the liquid-phase Beckmann rearrangement.
Article
Chemistry, Multidisciplinary
Yan Gao, Lilong Yang, Zhe Liu, Ruimin Gao, Guangfa Hu, Jianshe Zhao
Summary: A series of PIL-based POM salts were designed and synthesized, and supported catalysts were prepared for oxidative organic sulfide extraction in fuel oils. The supported catalyst showed better performance with maximum sulfur removal efficiencies up to 98.32% to 99.98%. The catalyst can be easily recovered and reused without significant activity decrease.
NEW JOURNAL OF CHEMISTRY
(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.