Article
Energy & Fuels
Shuai-Yong Dou, Jia-Yu An, Yan-Ru Feng, Kang Liu, Xuan Wang, Bo-Wen Zhang, Jing-Xuan Zhang, Er-Hong Duan, Ai-Bin Kang
Summary: In this study, a renewable Pickering emulsion system was demonstrated to overcome the mass transfer resistance at the liquid-liquid interface and facilitate catalyst recycling. The design of bifunctional materials, including Janus graphene oxide (GO) 2D-sheets, amino-modified SBA-15 (NH2-SBA-15) mesoporous microspheres, and H3PW12O40 (HPW), allowed for the enlargement of the interfacial contact area and easy recovery of the catalyst. The unique properties of the catalyst, such as large specific surface area, exposed catalytic active sites, and high pore volume, also contributed to the rapid diffusion of reactants and products.
Article
Engineering, Environmental
Yue Du, Jiacheng Hu, Yongxu Jin, Yisi Liu, Qiyun Pan, Kai Wang, Lina Zhou, Zhenhui Liu, Xiaodi Du
Summary: A new solvent-free strategy for synthesizing mesoporous metal-based ionic liquid/TiO2 composite has been developed in this study, showing excellent performance in catalytic oxidation reaction to remove organic sulfur compounds effectively from model fuel.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Suhang Xun, Rongmin Le, Chenchao Hu, Desheng Liu, Songmei Wang, Minqiang He, Wenshuai Zhu, Huaming Li
Summary: In this study, supported catalysts V2O5/3D g-C3N4 were prepared using a solvothermal method and programmed calcination, with a vanadium-based ionic liquid (V-IL) [(C8H17)3NCH3]3H3V10O28 as the vanadium source and 3D porous carbon nitride (3D g-C3N4) as the carrier. The use of V-IL promoted the high dispersion of V2O5 on the carrier and effectively avoided agglomeration. As a result, the catalytic oxidative desulfurization activity of V2O5/3D g-C3N4 was greatly enhanced, reducing the content of dibenzothiophene in model oil to 1.2 ppm under appropriate conditions. The recycling capacity and the possible process of oxidative desulfurization were also discussed.
Article
Energy & Fuels
Suhang Xun, Rongmin Le, Chenchao Hu, Desheng Liu, Songmei Wang, Minqiang He, Wenshuai Zhu, Huaming Li
Summary: A series of supported catalysts V2O5/3D g-C3N4 were prepared using a solvothermal method and programmed calcination. The use of a vanadium-based ionic liquid (V-IL) promoted the high dispersion of V2O5 on the carrier and effectively prevented agglomeration. As a result, the catalytic oxidative desulfurization activity of V2O5/3D g-C3N4 was greatly enhanced, reducing the content of dibenzothiophene in model oil to 1.2 ppm under appropriate conditions. The recycling capacity and the possible process of oxidative desulfurization were also discussed.
Article
Chemistry, Physical
Ting Su, Mingyue Chi, Hongying Chang, Ying Jin, Weiping Liao, Wanzhong Ren, Deyang Zhao, Christophe Len, Hongying Lu
Summary: A novel quantum-scale catalyst named CoMoxOy-TiO2 was successfully synthesized and applied in extraction and catalytic oxidative desulfurization process, achieving 100% desulfurization at 30 degrees Celsius using ionic liquids as extract solvents and reaction media. This work not only provides a new green process for deep desulfurization of diesel, but also offers an effective preparation method for quantum-scale catalyst.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
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
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
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
Energy & Fuels
Qing Liu, Ting Su, Haowei Zhang, Weiping Liao, Wanzhong Ren, Zhiguo Zhu, Kaixuan Yang, Christophe Len, Jia Yu, Deyang Zhao, Hongying Lu
Summary: Photocatalytic oxidative desulfurization (PODS) is a promising method for removing sulfur compounds. By designing a polyoxometalate-modified TiO2 nanomaterial and using visible light irradiation with H2O2, 100% sulfur removal can be achieved in 30 minutes.
Article
Energy & Fuels
Zhaoyang Qi, Huaifang Li, Jie Chen, Changshen Ye, Ting Qiu
Summary: In this study, a carboxyl functionalized ionic liquid was used as a linker to prepare a composite catalyst for the removal of DBT from liquid fuel. The fabricated catalyst exhibited high catalytic activity and remained efficient even after 16 hours of continuous operation. The synergistic catalytic mechanism between HPW and Zr(IV) was investigated, and the distance between active sites was found to play a crucial role in the reaction.
Article
Materials Science, Coatings & Films
I. V. Lukiyanchuk, M. S. Vasilyeva, A. Yu Ustinov, A. A. Bryzhin, I. G. Tarkhanova
Summary: The catalytic properties of Ti/TiO2/NiWO4 + WO3 composites fabricated by plasma electrolytic oxidation (PEO) of titanium in a solution containing 0.1 mol/L Na2WO4 + 0.1 mol/L CH3COOH + 0.05 mol/L Ni(CH3COO)(2) were studied in model reactions, and it was found that such composites are promising for catalytic oxidation of both S-containing and N-containing petroleum compounds. The role of nickel in increasing their activity and stability was demonstrated.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xinpeng Liu, Baohua Wang, Xiaole Dong, Yahui Qiu, Qingmei Meng
Summary: The study investigated the desulfurization and regeneration performance of nanofluids composed of oxidizing ionic liquids and inert nanoparticles. It was found that the addition of SiO2 nanoparticles significantly enhanced the desulfurization and regeneration performance, with an optimal weight ratio of 0.5% and a regeneration efficiency exceeding 88%. The mass transfer coefficient also increased significantly after the addition of nanoparticles.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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
Engineering, Environmental
Zhendong Yu, Suhang Xun, Meizan Jing, Haofeng Chen, Weiyu Song, Yanhong Chao, Mohammad Rahmani, Yuxiao Ding, Mingqing Hua, Jian Liu, Wenshuai Zhu
Summary: A 3D assembly TiO2 nanoflower catalyst with controllable oxygen vacancies was developed for oxidative desulfurization (ODS) in diesel oil. The increased oxygen vacancies and Ti3+ promote the chemical adsorption and reduce the energy barriers, leading to the generation of hydroxyl radicals and superoxide radicals. The experiment showed a 100% ODS rate in only 30 minutes under optimal conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Multidisciplinary Sciences
Sangar S. Ahmed, Omid Amiri, Karwan M. Rahman, Savana J. Ismael, Noor S. Rasul, Darya Mohammad, Karukh A. Babakr, Nabaz A. Abdulrahman
Summary: In this study, we developed a novel piezo-catalyst that can achieve excellent oxidative desulfurization of fuel at room temperature without the need for any oxidants. The study demonstrated that the CeO2/Ce2O3/NiOx nanocomposites exhibited outstanding desulfurization performance for both model and real fuels, and they also showed remarkable reusability. The investigation of the mechanism of sulfur oxidation revealed the involvement of superoxide radicals and holes, and the kinetic study confirmed a second-order reaction kinetic model for sulfur removal by the piezo-catalyst.
SCIENTIFIC REPORTS
(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.