Article
Energy & Fuels
Xiang Yan, Caili Dai, Ruoyu Wang, He Liu, Siwei Meng, Xu Jin, Yong Hu, Yining Wu
Summary: This article investigates the countercurrent imbibition of different imbibition agents in order to enhance oil production in tight oil reservoirs. By measuring oil signal profiles and determining the imbibition distance and water saturation, the researchers found that NS-surfactant complexes displayed the highest imbibition efficiency. Furthermore, the study evaluated the ability of the imbibition agents to reduce interfacial tension and alter wettability, with wettability alteration being the primary mechanism to enhance oil recovery. This research provides guidance on selecting the appropriate imbibition agent to improve imbibition efficiency.
Article
Energy & Fuels
Shengpeng Mo, Lili Huang, Xin Zhao, Jun Li, Xuegang Ding, Xiaobin Zhou, Yanan Zhang, Yinming Fan, Mingming Fu, Hongxiang Zhu, Qinglin Xie, Daiqi Ye
Summary: This study presents a novel strategy for designing well-designed hierarchically porous hybrid photocatalysts with efficient separation and transfer of photoinduced charge carriers, which is of critical significance for solar energy utilization and CO2-to-fuel conversion.
Article
Energy & Fuels
Rajarshi Roy, Spencer Bandi, Xiaolong Li, Brian Schooff, Regan Kuttler, Megan Aichele, Scott Montgomery, Jacob Tuttle, Stacey J. Smith, Jost O. L. Wendt, Brian D. Iverson, Andrew Fry
Summary: The objective of this study was to investigate the synergistic effect of reducing sulfur dioxide (SO2) emissions during the combustion of biomass-coal blends. The results showed that blending woody biomass with coal can effectively reduce SO2 emissions and lower desulfurization costs, helping coal-fired utility boilers meet environmental emission standards.
Article
Energy & Fuels
Alice Moya Nunez, Eric Borjesson, Hanna Kinnunen, Daniel Lindberg, Rikard Norling
Summary: Aggressive corrosion can occur when firing waste or bio-based fuels due to the presence of high concentrations of heavy metals, alkali metals, and chlorides. This study investigates the effect of lead chloride, potassium chloride, and their mixture on the high temperature corrosion of alloy 625. The results show that the salt mixture induces severe corrosion, potentially due to the formation of lead chromates and eutectic melts.
Article
Energy & Fuels
Sachin Rameshrao Geed, Jitendra Singh Verma
Summary: Crude oil pollution has significant impacts on ecosystems, and its remediation is urgently needed. We developed an efficient bacterial consortium from petroleum refinery waste that can biodegrade crude oil. By optimizing process parameters and using a mathematical model, we established a scalable biodegradation process in a batch bioreactor. Experimental validation confirmed the effectiveness of the process in removing petroleum hydrocarbons.
Article
Energy & Fuels
Hamidreza Hassanloo, Xinyan Wang
Summary: Nanobubbles have attracted researchers' attention in various fields. Molecular dynamics simulations were used to investigate the behavior of formed NBs and their effects on the properties of dodecane and isooctane samples. The results showed that adding CO2 gas decreased the viscosity of dodecane, while dispersing oxygen gas increased viscosity. Moreover, samples containing hydrogen NBs had the highest improvement in specific heat capacity.
Article
Energy & Fuels
Mads Carsten Jespersen, Thomas Osterby Holst Rasmussen, Anders Ivarsson
Summary: This study investigates the lean-burn characteristics of ammonia in a pre-mixed SI engine and the influence of spark energy and discharge characteristics on engine performance and emissions. The results show that by optimizing the spark ignition system, the need for an ignition improver can be mitigated. The emissions of unburned ammonia and NOx are kept at low levels, and the balance between NH3 and NOx emissions is achieved by advancing the ignition timing.
Article
Energy & Fuels
Ramin Khodabandehlou, Dominik Kirschenmann, Ronny Schimpke, Andreas Richter, Massoud Massoudi Farid, Hamid Reza Norouzi, Stefan Guhl, Afsanehsadat Larimi, Navid Mostoufi
Summary: This study investigates ash agglomeration as a potential problem in fluidized bed gasifiers. The results show that the defluidization temperature for ash agglomeration increases with the gas velocity, but remains constant after a certain fluidization number.
Article
Energy & Fuels
Pan Gao, Aikeremu Abulaiti, Feiyu Gao, Xin Liu, Shaoxia Yang, Changqing Dong
Summary: This study systematically investigates the adsorption behavior and splitting reaction mechanism of H2O and CO2 in biomass chemical looping gasification, using density functional theory calculations. The findings provide a deeper understanding of the operating principle and potential optimization of this important technology.
Article
Energy & Fuels
Youcef Sehili, Khaled Loubar, Mohand Said Lounici, Lyes Tarabet, Mahfoudh Cerdoun, Clement Lacroix
Summary: In this study, a thermodynamic modeling and auto-ignition delay model based on Arrhenius equation were developed to predict and prevent knocking in dual fuel engine. The model was validated using experimental results and coupled with a CFD calculation model. Water injection technique was employed to prevent knocking, and the precision of the model allowed for optimal timing of water injection.
Article
Energy & Fuels
Wentao Xu, Yaji Huang, Siheng Song
Summary: This article proposes a new-style online combustion optimization framework for boiler combustion system to improve the combustion environment. Experimental results show that the proposed online combustion optimization approach can increase thermal efficiency and reduce NOx emissions.
Article
Energy & Fuels
Chenxi Zhao, Wenjun Zhu, Changhai Liang
Summary: This study investigates the influence of different crystalline ZrO2 supports on the catalytic performance of NiMo/ZrO2 catalyst for hydrodeoxygenation. Monoclinic ZrO2 is found to exhibit better catalytic activity and selectivity. NiMo/m-ZrO2 shows higher hydrogenation conversion and liquid alkanes selectivity, as well as excellent catalytic stability.
Article
Energy & Fuels
Xinqi Yao, Shuaishuai Yuan, Chuandong Li, Lei Wang, Xinhai Yu, Pengfei Tian, Shan-tung Tu
Summary: Methanol steam reforming (MSR) is an efficient method for hydrogen production in fuel cell applications, and Pd-Zn catalysts are commonly used. To minimize Pd loading, PdZn nanoparticles (NPs) and Pd1/ZnO single-atom catalysts (SACs) were prepared through ball milling. The 2PdZn/Al2O3 NP catalyst exhibited excellent antioxidation ability and stability at 350 degrees C, with methanol conversion maintained at 99.5% and CO concentration below 0.71%. It showed promising potential for on-board hydrogen production for fuel cell vehicles.
Article
Energy & Fuels
Xiaoqian Ju, Zhiyuan Yang, Xinbo Duan, Jingwen Wang, Yangyang Xin, Dechao Wang
Summary: Metal-organic polyhedra (MOP) have attracted attention due to their customizable functionality and good chemical stability. However, their skeleton structure is prone to collapse at high temperatures and the activation process can weaken their CO2 adsorption capacity and selectivity. In this study, an effective strategy was developed to overcome these challenges by uniformly dispersing MOP on the surface of layered double hydroxide nanosheets (LDHNS) using microwave-assisted synthesis. The resulting LDHNS/Zr-MOP-NH2 composites demonstrated improved CO2 capacity, selectivity, cycle ability, and thermal stability compared to the original Zr-MOP-NH2. This is the first report on the combination of MOP and LDH for CO2 storage, which offers new insights in this field. Moreover, the method can be extended to other porous materials for reducing carbon emissions and utilizing mineral resources more efficiently.
Article
Energy & Fuels
Ravinder Kumar, Mahesh M. Haridasan, Inzamam Ahmad, Atul Bhargav, Suman Roy Choudhuri
Summary: Logistic fuels such as JP8 and diesel, with their high energy density and wide availability, are still crucial as energy carriers in strategic applications. However, in some fuel cell system applications, these fuels need to be reformed on-board to produce hydrogen-rich syngas. The current catalytic reforming process faces challenges such as soot formation and catalyst deactivation, especially when commercial or military grade diesel is used. To address these challenges, a non-catalytic autothermal reformer has been designed and built for liquid hydrocarbons. Experimental data show that factors such as reactant mixing, turbulent Reynolds number, Damkohler number, oxygen-to-carbon ratio, and steam-to-carbon ratio play important roles in the performance of the reformer.
Article
Energy & Fuels
Yinan Wang, Xuteng Zhao, Ting Chen, Zuwei Zheng, Rijing Zhan, He Lin
Summary: This study revealed that proper Al distribution on SSZ-13 can significantly improve the performance and stability of PNA catalysts, by enhancing ion-exchange level and increasing Z2Pd2+ sites, which leads to enhanced NOx adsorption capacity and water resistance.
Article
Energy & Fuels
Ali Cherif, Mohammadamin Zarei, Joo-Sung Lee, Ha -Jun Yoon, Chul-Jin Lee
Summary: This study numerically modeled and analyzed the production of hydrogen through electrically heated ammonia decomposition. A novel design with an in-situ electric heater embedded in the catalyst was proposed and compared to traditional configurations. The optimized design showed significantly improved performance in terms of ammonia conversion and hydrogen yield.
Article
Energy & Fuels
Qing Liu, Tinghao Jia, Lun Pan, Zhouyang Shen, Zehao Han, Xiangwen Zhang, Ji-Jun Zou
Summary: This study investigated the pyrolysis performance of high-energy-density fuels with different cyclic structures and revealed the relationship between molecular structure and reactivity. The results showed that the pyrolysis conversion of the fuels is closely related to their carbon and hydrogen atom numbers, and the decomposition reaction pathways were proposed. Additionally, the heat sink of the fuels was correlated with the product of their carbon and hydrogen atom numbers. This study provides guidance for the design and development of high-energy-density fuels for high-performance aerospace vehicles with long flight distance and hypersonic speed.
Article
Energy & Fuels
Bingxian Peng, Yongbo Zhu, Lixia Tang
Summary: This paper investigates the conversion of P and the release of F and Cl after sludge incineration, and discusses the agricultural application and environmental pollution caused by sludge incineration ash.
Article
Energy & Fuels
Amir Salar Abdulghaffari, Mohammad Kazemeini
Summary: This research introduces a computational framework to identify the optimal model for catalyst deactivation and coke formation kinetics. The framework leverages the concept of active site loss and demonstrates high accuracy and simplicity. It also transforms deactivated catalyst data into a unified dataset, positively impacting the kinetic study of main reactions.
