Results 41 to 50 of about 8,294 (210)

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

EcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang, Ji‐Xiang Guo, Qiming Huang, Kunpeng Li, Chi Li, Yajie Wu   +5 more
wiley   +1 more source

Comparative studies on compounds occluded inside asphaltenes hierarchically released by increasing amounts of H2O2/CH3COOH

, 2010
International audienceBeing the heaviest fraction of crude oils, asphaltenes are liable to aggregate, and other molecules in the oils can be steadily adsorbed onto, and even occluded inside the macromolecular structures of the asphaltenes. These occluded
Alain Graciaa, Graciaa, Alain, Jing Zhao, Zhang, Luehui, Patrice Creux, Anna Chrostowska, Creux, Patrice, Zhang, Haizu, Liao Zewen, Z., Lühui Zhang, Liao, Zewen, Haizu Zhang, Zhao, Jing, Zewen Liao, Zhang, L., Yang, C., Yang, Chupeng, Chrostowska, Anna, Zhao, J., Zhang, H., Chupeng Yang   +20 more
core   +1 more source

La influencia de los productos químicos en la precipitación de asfaltenos: una comparación entre las técnicas de microscopía de fuerza atómica y de infrarrojo cercano

Revista Fuentes El Reventón Energético, 2017
Asphaltenes can cause serious problems to petroleum industry. Indication of asphaltenes stability can be obtained by precipitation induced by n-heptane, monitored by near-infrared (NIR).
Jeniffer N. Figueira, Renata A. Simão, Bluma G. Soares, Elizabete F. Lucas   +3 more
doaj   +1 more source

Experimental measurement and modeling of asphaltene adsorption onto iron oxide and lime nanoparticles in the presence and absence of water

Scientific Reports, 2023
Asphaltene precipitation and its adsorption on different surfaces are challenging topics in the upstream and downstream of the oil industries and the environment.
Sajjad Ansari, Mohammad-Reza Mohammadi, Hamid Bahmaninia, Abdolhossein Hemmati-Sarapardeh, Mahin Schaffie, Saeid Norouzi-Apourvari, Mohammad Ranjbar   +6 more
doaj   +1 more source

Anode Materials Requirements for Potassium Ion Batteries: Challenges and Future Possibilities

EcoEnergy, EarlyView.
This work identifies a critical scale‐up gap between laboratory battery research and industrial targets, driven by low active‐mass loadings and the omission of full‐cell metrics. We outline concrete strategies to bridge this divide, shifting focus toward high‐loading electrodes (> 3 mg cm−2) to ensure practical commercial viability of potassium ion ...
Md. Robiul Alam, Sahithi Thatipamula, Muhammad Waqas Khan, Suraj Loomba, Sharafadeen Gbadamasi, Muhammad Haris, Xian Jian, Asif Mahmood, Mahdokht Shaibani, Nasir Mahmood   +9 more
wiley   +1 more source

Catagenetic trends in composition and structure parameters of asphaltenes

Georesursy
Сatagenetic transformations of asphaltenes of organic matter (OM) from recent sediments and fossil rocks were studied on rocks sampled from different sedimentary basins (Timan-Pechora, Mezen, West Siberian, Kuznetsk, Aldan-Maya and Middle Amur) of Russia.
L. S. Borisova, I. D. Timoshina
doaj   +1 more source

Quantitative Insights into Atomic Scale Oil–Clay Adhesion Governing Shale Oil Retention and Mobility

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Atomic force microscopy reveals a clear adhesion hierarchy between shale oil and clay minerals, governed by nanoscale surface chemistry. Strong interactions on chlorite and illite arise from abundant polar sites and cation bridging, whereas weaker coupling on montmorillonite limits interfacial binding.
Chen Lv, Guanwen Lu, Guandong Su
wiley   +1 more source

Spatially Coupled Cl2 Confinement and Activation at Curved Ni Single‐Atom Sites for Highly Reversible Li–Cl2 Batteries

Angewandte Chemie, Volume 138, Issue 40, 28 September 2026.
A robust cathode featuring curvature‐engineered Ni single‐atoms anchored within hierarchical pores effectively confines Cl2 and accelerates Cl0/Cl−1 redox kinetics. This synergistic architecture unlocks the potential of Li‐Cl2 secondary batteries with an unprecedented 1×106 mAh g−1 cumulative capacity, all‐climate resilience (–40°C to + 70°C), and 7.65
Minggang Xie, Keren Jiang, Xuehai Tan, Xuesong Xie, Zheng Cheng, Xianbin Meng, Yuxuan Xue, Yi Guan, Zhixuan Chen, Yifan Li, Renfei Feng, Zhi Li   +11 more
wiley   +2 more sources

Synergistic Molecular Modulation of ππ Stacking for High‐Performance Pitch‐Derived Hard Carbon Anodes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A synergistic molecular strategy is demonstrated to disrupt intrinsic ππ stacking in pitch, boosting 6‐fold sulfonation, yielding a hard carbon with 0.371 nm interlayer spacing and maximized closed pores, and achieving a high reversible capacity, remarkable rate capability (205.6 mAh g−1 at 2 A g−1) and cyclic stability.
Xiang Wang, Yangyang Chu, Shuaipeng Liu, Ruyao Zhang, Zeyu Zhu, Qiang Li, Weixiang Li, Ya‐Xia Yin, Sailong Xu   +8 more
wiley   +1 more source

Next‐Generation Carbon‐Based Anodes for Alkali Metal‐Ion Batteries: Recent Progress on Biphenylene and Emerging Materials

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Recent advances in carbon‐based anodes for alkali metal‐ion batteries are critically reviewed, with emphasis on biphenylene and other emerging carbon allotropes. Biphenylene exhibits exceptional theoretical electrochemical properties beyond conventional graphite, highlighting its strong potential as a next‐generation anode material once scalable ...
Adewale Hammed Pasanaje, Nirpendra Singh
wiley   +1 more source