Results 91 to 100 of about 2,562,018 (303)

Spatial-temporal evolution and damage mechanism of pore-throat networks in unconsolidated sandstones during seawater reinjection based on in-situ CT

Applied Ocean Research
Seawater is widely used as an injection fluid in offshore subsurface systems because of its stable availability and low operational cost. However, direct pore-scale evidence of structural evolution and seepage degradation in unconsolidated sandstones ...
Huiyong Zeng, Lifeng Chen, Yongqing Bai, Zhaonian Zhang, Minghao Xue, Lu Lai, Tengfei Wang   +6 more
doaj   +1 more source

Numerical Simulation of Two-Phase Flow Pattern of Supercritical Carbon Dioxide With PAG-Type Lubricating Oil in Gas Cooler [PDF]

, 2012
It has been reported that lubricating oil has a significant influence on the cooling heat transfer of supercritical carbon dioxide. In this study, numerical analysis of the flow pattern of a carbon dioxide (CO2)-oil mixture in a gas cooler was conducted ...
Dang, Chaobin, Hihara, Eiji, Arai, Shintaro   +2 more
core  

Methanesulfonic Acid as a Dual‐Role Reagent for Porous Polymer Network Design

Advanced Materials, EarlyView.
The design of porous polymer networks (PPNs) using methanesulfonic acid (MSA) as a dual‐role reagent facilitates the synthesis of robust PPNs for specific applications. It also makes the scale‐up process techno‐economically feasible because MSA functions simultaneously as both a solvent and a catalyst for the reaction.
Kelechi Festus, Arnab Ghosh, Ankit Mondal, Theresa Ariri, Suman Mandal, Ahana Sarkar, Urme Podder, Qingsheng Wang, Hong‐Cai Zhou   +8 more
wiley   +1 more source

Curvature‐Controlled Field Effect Enables Thermal Localization for Low‐Temperature C─F Bond Activation

Advanced Science
Geometric singularities are known to concentrate electric and optical fields, but whether curvature alone can localize thermal energy and thereby influence chemical kinetics remains unresolved.
Hang Zhang, Jialin Zheng, Xiaojian Wang, Hao Yu, Diya Xie, Wenjie Luo, Minghui Yang, Kang Liu, Yuxia Duan, Zhang Lin, Liyuan Chai, Emiliano Cortés, Min Liu   +12 more
doaj   +1 more source

Recent advances in CO2 hydrogenation to ethanol over non-precious metal catalysts

Sustainable Chemistry for Energy Materials
In response to the rising atmospheric CO2 concentration resulting from excessive consumption of fossil energy, the hydrogenation of CO2 to ethanol presents a promising pathway for carbon resource utilization.
Haokai Niu, Xing Yu, Peng Gao, Ph. D.
doaj   +1 more source

Over 95% Optical Reflectance From Structurally Modulated All‐Biopolymer Multilayers

Advanced Materials, EarlyView.
A new dense–porous design turns ordinary polysaccharides into highly reflective photonic multilayers. Alternating dense pectin and porous cellulose nanofiber layers create strong refractive‐index contrast without inorganic or synthetic polymers, enabling nearly perfect visible reflection, high near‐infrared reflection, broadband metallic‐like colors ...
Takaaki Kasuga, Ami Mizui, Shun Ishioka, Yintong Huang, Yuto Kaku, Tsuguyuki Saito, Tatsuya Namba, Yohsuke Goi, Hirotaka Koga, Masaya Nogi   +9 more
wiley   +1 more source

Transport properties of supercritical carbon dioxide

A review focuses on expts. describing the hydrodynamic behavior and the heat transfer properties of supercrit. CO2 and the application of supercrit.
de Koeijer, Evert, Fourcade, Eric, Meyer, Thierry, Wijers, Johan, Keurentjes, Jos, Lavanchy, Frederic   +5 more
core  

The Effect on Asset Values of the Allocation of Carbon Dioxide Emission Allowances [PDF]

Paradoxically, owners of existing generation assets may be better off paying for carbon dioxide emission allowances than having them distributed for free.
Paul, Anthony, Palmer, Karen, Burtraw, Dallas, Bharvirkar, Ranjit   +3 more
core  

EFFECT OF SOLVENT FLOW RATE ON THE SUPERCRITICAL CARBON DIOXIDE EXTRACTION OF ANDROGRAPHOLIDE FROM ANDROGRAPHIS PANICULATA [PDF]

, 2006
Malaysia is one of the major medicinal plants (Andrographis paniculata) producers in the world. Extraction of bioactive component (andrographolide) from ground dried leaves of this plant using supercritical carbon dioxide has been studied.
Kumoro, A.C., Hasan, M.
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source