Article
Chemistry, Applied
Imteaz Ahmed, Pillaiyar Puthiaraj, Young-Min Chung, Wha-Seung Ahn
Summary: A new cross-linked aromatic porous polymer (CAPP) functionalized with diethyltriamine (DETA) was used as a catalyst for the removal of thiophenic sulfur compounds via oxidative desulfurization. The reaction conditions include temperature range of 80 to 140 degrees C, catalyst amount of 10 to 50 mg, and the catalyst is reusable for four repetitive cycles.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Energy & Fuels
Zijia Liu, Yingnan Zhang, Jiabao Bai, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Ying Liang, Hou Chen
Summary: This work introduces a highly efficient and durable catalyst, MoOx nanoclusters decorated on spinel-type porous metal oxide nanosheets, for aerobic oxidative desulfurization reactions. The electronic structure of the MoOx nanoclusters can be modulated by the metal oxide carriers, with Mo(V) species identified as the active center. The catalyst MoOx/CuCo2O4, with air as the oxidant source under atmospheric pressure, achieves the aerobic transformation of dibenzothiophene at 90°C with a turnover frequency of 16.2 h-1 and shows no performance attenuation or structural deformation in six successive reuses.
Article
Chemistry, Physical
Suting Xie, Xinyu Zhao, Jiabao Bai, Zhihua Yang, Hou Chen, Lixia Yang, Ying Liang, Liangjiu Bai, Huawei Yang
Summary: This study presents the synthesis of polyoxometalate (POM) derived Co,N-codoped MoOx nanoclusters on graphene sheets as catalysts for boosting the AODS reactions. Through experimental characterization and DFT calculations, it is demonstrated that the optimized catalyst exhibits enhanced catalytic activity by effectively activating O2 and optimizing the electronic structure. The catalyst shows impressive activity, durability, and deep desulfurization effect on real diesel.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Yiru Zou, Chao Wang, Hanxiang Chen, Haiyan Ji, Qian Zhu, Wenshu Yang, Linlin Chen, Zhigang Chen, Wenshuai Zhu
Summary: In this study, V2O5 nanoparticles with oxygen vacancies were successfully prepared using a facile ball milling strategy, showing remarkable sulfur removal efficiency for fuel oils, with sulfur removal reaching up to 99.7%.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Nanoscience & Nanotechnology
Yu Liu, Jiabao Bai, Ya Song, Huawei Yang, Lixia Yang, Liangjiu Bai, Donglei Wei, Wenxiang Wang, Xinxiang Cao, Ying Liang, Hou Chen
Summary: Iron-intercalated molybdenum oxides nanobelts have been reported as a durable and robust catalyst for aerobic oxidative desulfurization, catalyzing the reaction efficiently at 80 degrees C by precisely modulating the electronic structure to increase surface oxygen vacancy density. The optimized doping amount enables the catalyst with excellent catalytic performance through thorough conversion of various sulfides, making it a candidate for sustainable fuel desulfurization. The strategy demonstrated here provides practical guidance for the rational design and optimization of Mo-based catalysts to promote aerobic oxidation reactions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Haofeng Chen, Chao Liang, Suhang Xun, Zhendong Yu, Cancan Wu, Minqiang He, Huaming Li, Wenshuai Zhu
Summary: This article proposes an oxygen vacancies (OVs) regulation strategy to enhance the catalytic activity of bimetallic oxide for oxidative desulfurization of fuel. By synthesizing V-Nb mixed oxide with different crystal phases, it was found that the tetragonal V-Nb mixed oxide (T-VNbOx) has lower OVs formation energy and larger OVs concentration, leading to significantly improved catalytic activity and cycling stability for ultra-deep oxidative desulfurization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Chunmei Deng, Juan Li, Lihua Kang, Mingyuan Zhu
Summary: Co/SBA-15 is a catalyst used for aerobic oxidative desulfurization (AODS) reaction, which can achieve high desulfurization rate under mild reaction conditions. The mechanism involves the adsorption of dibenzothiophene on the catalyst and its oxidation to polar sulfone by superoxide radicals.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Xiang Gao, Wei Jiang, Xin An, Kun Zhu, Linhua Zhu, Peiwen Wu, Wenshuai Zhu, Huaming Li
Summary: NHPI/PC catalysts, loaded with organic molecular catalyst NHPI on the surface of petroleum coke-based porous carbon, showed high efficiency and recyclability in aerobic oxidative desulfurization of model diesel oil under optimal conditions. The catalyst exhibited strong adsorption of oxidative products, resulting in a significant decrease in sulfur content. Free radical trapping experiments confirmed the presence of superoxide radicals as the main active species. Reusability tests demonstrated the catalyst's potential for industrial application after 9 cycles. Actual diesel oil sulfur content could be reduced from 852 mg kg(-1) to 91 mg kg(-1) with the catalyst, indicating promising industrial prospects.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Siyu Xu, Liangtao Wen, Chen Yu, Song Li, Jingchun Tang
Summary: In this study, a novel metallic oxide catalyst MnFe2O4@biochar composite was synthesized and used to activate peroxymonosulfate (PMS) for efficient degradation of bisphenol A. The composite showed homogeneously distributed metal oxide particles, strong magnetism, and wide adaptability, effectively removing organic pollutants.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Ming Zhang, Wanying Liao, Yanchen Wei, Chao Wang, Yujie Fu, Yongkang Gao, Linhua Zhu, Wenshuai Zhu, Huaming Li
Summary: In this study, 3DOM WOx-400 catalysts with abundant oxygen defects and high desulfurization activity were successfully prepared, achieving over 99% aerobic oxidative desulfurization rate within 4 hours. The material showed potential for recycling and efficient desulfurization, providing a feasible route for developing nanoporous materials for fuel desulfurization.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Chang Deng, Peiwen Wu, Hongping Li, Haonan Zhu, Yanhong Chao, Duanjian Tao, Ziran Chen, Mingqing Hua, Jixing Liu, Jianjun Liu, Wenshuai Zhu
Summary: In this study, a unique 26-faceted polyhedral high entropy oxide catalyst with highly active site exposure was fabricated using a mechanochemistry-assisted strategy. The catalyst exhibited more oxygen vacancies and the high-index facets facilitated the adsorption and activation of oxygen, leading to significantly enhanced oxidation activity of organic sulfides.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Qin Gao, Zhenyu Wang, Yongfang Rao, Yulei Zhao, Junji Cao, Kin-Fai Ho, Yue Zhai, Mingyu Xiong, Juntang Li, Yu Huang
Summary: Understanding the antibacterial mechanisms of nanomaterials is crucial for the development of antibacterial materials. This study successfully demonstrated the antibacterial activity of alpha-MoO3 by generating superoxide radicals and attacking bacterial membranes.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Review
Green & Sustainable Science & Technology
Iqrash Sha, Sumeer Shafique, Parveen Akhter, Manzar Ishaq, Wenshu Yang, Murid Hussain
Summary: The production of greener refinery products is crucial for maintaining a healthy environment globally. The challenges in amputating refractory organosulfur compounds have led to the development of deep oxidative desulfurization technology using molecular oxygen as an alternative oxidant. However, activating molecular oxygen under mild circumstances remains a challenge, despite recent advances in efficient materials for deep aerobic desulfurization.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Ruiyang Xiao, Yifu Fu, Lu Bai, Chu Chu, Junye Ma, Zongsu Wei, Richard Spinney, Dionysios D. Dionysiou, Jiaxi Pu
Summary: Ascorbate (Asc) is an important antioxidant that can counteract reactive oxygen species (ROS). Its reactivity with superoxide radical (O-2(center dot-)) is influenced by the acidity of the environment, which has implications for its ecotoxicological function and environmental potentials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jinghui Wu, Yue Li, Menting Jiang, Yang Huo, Xianze Wang, Xiaohong Wang
Summary: Designing green and efficient catalytic systems that can utilize molecular oxygen for deep desulfurization is highly desirable. The inverse-micellar polyoxometalate (POM) (CTA)PMo4V8 demonstrated excellent activity in removing organic sulfur from real oils with super-low sulfur content, showing high stability and reusability. The (CTA)PMo4V8 catalytic system has great potential for practical applications in the oxidative desulfurization of oil.
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.