Results 61 to 70 of about 795,994 (232)

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

Advanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu, Fan Yang, Deep M. Patel, Mohammad Albloushi, Qiqi Mao, Shan Jiang, Christian J. Breckner, Connor W. Schroeder, Ruoyu Cui, Tao Ma, Dapeng Jing, Wenyu Huang, Jeffrey T. Miller, Wenzhen Li, Luke T. Roling, Yue Wu   +15 more
wiley   +1 more source

Study on the Stabilization Mechanism of CO2 Foam Fracturing Fluid Modified by Nano⁃Graphene Oxide

Shiyou huagong gaodeng xuexiao xuebao
Carbon dioxide (CO2) foam fracturing fluid features the advantages of low water consumption, weak reservoir damage, and excellent stimulation performance, making it particularly suitable for the extraction of water⁃sensitive unconventional shale oil and ...
Fan LI, Zhiguo WANG, Ran ZHOU, Qian ZOU, Dongyao JIA   +4 more
doaj   +1 more source

RESEARCH ON CO2 FLOODING FOR IMPROVED OIL RECOVERY IN WATER FLOODING ABANDONED RESERVOIRS [PDF]

Journal of Petroleum Science and Technology, 2014
CO2 injection is an effective technique for improved oil recovery in light oil reservoirs, especially for water flooding abandoned reservoirs. In this study, the lower part of Es1 reservoirs in Pucheng oilfield was introduced as the target reservoir.
Baolun Niu, Ruijian Deng, Yiqing Lin, Xinrong Wu, Zhang Zhang, Changhua Yang, Weidong Yang, Zhaomin Li, Shaoran Ren   +8 more
doaj   +1 more source

Efficient Hydroxyl Diffusion Triggers Surface Hydronium Enrichment and Bulk Proton Participation to Boost Alkaline Hydrogen‐Evolving Reaction

Advanced Materials, EarlyView.
For the first time, we shed light on the surface‐to‐bulk diffusion, induction, and reaction behaviors of OH−, H+, and H2O species on model oxides for alkaline hydrogen‐evolving reaction (HER). We first demonstrate that bulk OH− diffusion significantly affects the generation of proton sources and the diffusion/reaction behaviors of protons, thus ...
Daqin Guan, Hengyue Xu, Xiao Sun, Leqi Zhao, Chun‐Kuo Peng, Chao Jing, Yu‐Cheng Huang, Jiayi Tang, Nai Shi, Zezhou Lin, Xiaomin Xu, Zhiwei Hu, Zongping Shao   +12 more
wiley   +1 more source

Foam extrusion behavior and correlation between foam morphology and foam properties of externally plasticized cellulose acetate using inert gases

, 2022
S.213-218Today, polystyrene (PS) and polypropylene (PP) are the standard polymers for producing extruded foam sheets for packaging. Basically, these polymers are based on non-renewable resources and are non-biodegradable.
Berdel, K., Kabasci, S., Radusch, H.J., Hildebrand, T., Luck, F. van, Wodke, Thomas, Zepnik, S.   +6 more
core   +1 more source

Beyond Nanoporosity: A CO2‐Conditioned Glassy Matrix Contributes to the Brittle‐to‐Ductile Transition of Nanocellular Polyetherimide

Advanced Materials, EarlyView.
The mechanical performance of nanocellular polyetherimide cannot be explained by nanoporosity alone. It is shown that CO2 saturation and desorption leave a distinct mechanical signature in the glassy matrix before foaming. This matrix contribution provides a new route to understand and optimize the brittle to ductile transition in nanocellular polymers.
Félix Lizalde‐Arroyo, Frederik Van Loock, Victoria Bernardo, Tuuli Peltola, René Bes, Alberto Tena, Miguel Ángel Rodríguez‐Pérez, Judith Martín‐de León   +7 more
wiley   +1 more source

Performance Optimisation of Low-Damage Foam Fracturing Fluid System in Unconventional Reservoirs

International Journal of Chemical Engineering
Foam fracturing fluid is a prospective substitute for water-based fracturing fluid, with the potential to effectively mitigate the adverse effects associated with unconventional reservoirs.
Xuefeng Gong, Liping Mu, Lirong Liu
doaj   +1 more source

Lattice Strain and Built‐In Field Synergistically Boost Urea Oxidation via Dynamic NiOOH Mediation at Multiphase Heterointerfaces

Advanced Materials, EarlyView.
A sulfur‐doped lignin‐derived carbon‐coated Ni‐NiO‐MoO2 nanorod array was synthesized, exhibiting enhanced UOR performance ‐ due to lattice‐strain and built‐in electric field effects by multiphase heterogeneous interface in Ni‐NiO‐MoO2@SC, excellent corrosion resistance, mass‐transport ability, and long‐term stability (500 mA cm−2 at 1.53 V for 500 h ...
Jiawei Li, Liancen Li, Guangfu Qian, Zishan Cai, Yiping Cao, Yihao Xu, Ruyu Zhang, Jinli Chen, Changzhou Chen, Panagiotis Tsiakaras   +9 more
wiley   +1 more source

Pigs exposed to nitrogen, argon or carbon dioxide filled high-expansion foam: behavioural responses, stun process and blood lactate concentration

Animal
According to the EU legislation, all animals farmed for food production must be stunned before being exsanguinated (exempt slaughter prescribed by religious rites). Stunning methods must be reliable, effective, and free from avoidable pain, distress, and
C. Lindahl, E. Sindhøj, M.A. Gerritzen, H.G.M. Reimert, C. Berg, M. Blad, A. Wallenbeck   +6 more
doaj   +1 more source

Life Cycle Assessment of Foam Concrete Production in Latvia

Environmental and Climate Technologies, 2019
Global warming being increasingly discussed, solutions for reducing emission greenhouse gases become more important in all industry sectors. The total energy consumed in the construction sector contribute up to 1/3 from all greenhouse gases emissions ...
Zimele Zinta, Sinka Maris, Korjakins Aleksandrs, Bajare Diana, Sahmenko Genadijs   +4 more
doaj   +1 more source