Results 81 to 90 of about 89,931 (179)

Challenges, models, and algorithms for flow and transport simulations in deep reservoirs

open access: yesDeep Underground Science and Engineering, EarlyView.
Deep reservoirs are considered a promising resource for future energy supply, but current reservoir simulation technologies may face certain challenges if they are directly used in specific scenarios in deep reservoir development. Models and algorithms were developed to resolve these challenges, including a better phase equilibrium model, a better ...
Tao Zhang, Jie Liu, Shuyu Sun
wiley   +1 more source

Gels for CO2 geo‐storage and conformance control: A systemic review of behavior and performance

open access: yesDeep Underground Science and Engineering, EarlyView.
This review provides a systemic evaluation of potential sealants used in CO2 subsurface storage practices. Critical analyses of how external factors like CO2, pH, brine salinity and hardness, rock mineralogy, pressure, temperature, and injectivity could affect the performance of different sealants are provided. Abstract Carbon capture and storage (CCS)
Funsho Afolabi   +6 more
wiley   +1 more source

2‐Formyl‐5‐(hydroxymethyl)furan (HMF) Derivatives as Active Complexing Agent for CO2 Insertion Reaction

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Renewable‐based furanics derived from 5‐HMF are used to synthesize cyclic organic carbonates (COCs) via CO2 insertion into epoxides. The BHTHF/NaBr complexing system shows high activity, achieving 94–99% epoxide conversion and 70–99% COC selectivity under mild conditions.
Nicola Bragato   +7 more
wiley   +1 more source

Transition‐Metal‐Free Carboxylation of Aryl Boronates in Supercritical CO2

open access: yesEuropean Journal of Organic Chemistry, Accepted Article.
Carboxylation using stable and abundant CO2 as a carbon source would be an attractive option in synthetic organic chemistry if the use of highly reactive organometals or toxic and expensive transition metals can be avoided. Herein we report a transition‐metal‐free direct carboxylation of aryl trialkoxyboronates in supercritical CO2 (scCO2), promoted by
Jun Odake   +2 more
wiley   +1 more source

Enantioselective Anion‐Binding‐Catalyzed Nucleophilic Addition to 4‐Quinolones

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The first organocatalytic enantioselective formal 1,4‐addition to 4‐quinolones has been developed. This method relies on chiral triazole‐based anion‐binding catalysis using enol nucleophiles, complementing previous metal catalytic approaches. Moderate to good yields and enantioselectivities were achieved by in situ silylation and formation of a key ...
Martin Aleksiev   +2 more
wiley   +1 more source

Insights Into the Enantioseparation of Polyhalogenated 4,4′‐Bipyridines With a Cellulose Tris(3,5‐Dimethylphenylcarbamate)‐Based Chiral Column by Using Supercritical Fluid Chromatography

open access: yesELECTROPHORESIS, EarlyView.
ABSTRACT In the last decade, by integrating experimental and computational analyses, it was demonstrated that halogen bond (HaB) may contribute to binding and enantiorecognition mechanisms underlying the HPLC enantioseparation of halogenated chiral analytes by using cellulose tris(3,5‐dimethylphenylcarbamate) (CDMPC)‐based chiral columns and n‐hexane ...
Emmanuelle Lipka   +7 more
wiley   +1 more source

Evaluating the sensitivity of surrogate optimization target properties characterizing droplet formation, evaporation, and chemical reactions to biodiesel composition reduction

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract Liquid fuels contain a large number of components. However, it is not computationally feasible to implement the detailed composition into numerical solvers in combustion chamber design. Surrogate mixtures are used to facilitate calculations, which can reproduce the fuel characteristics with fewer components providing reasonable accuracy ...
Dávid Csemány
wiley   +1 more source

Development of a test facility for analyzing supercritical fluid blowdown [PDF]

open access: yes
The generation IV nuclear reactors under development mostly use supercritical fluids as the working fluid because higher temperatures improve the thermal efficiency.
Lapa, Celso Marcelo
core  

Hydrous Carbonatitic Liquids Drive CO2 Recycling From Subducted Marls and Limestones

open access: yesGeophysical Monograph Series, Page 209-221., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Erwin Schettino, Stefano Poli
wiley  

+5 more sources

Experimental Investigation and Characterization of Biodiesel From Aregmone ocheroleuca

open access: yesEnergy Science &Engineering, EarlyView.
The experimental investigation and characterization of biodiesel derived from Aregmone ochroleuca, a plant known for its oil‐rich seeds. The production of biodiesel from argemone oil, methanol, and potassium hydroxide catalysis through transesterification methods, and then characterized their properties, like the Effect of Reaction Temperature on ...
Eyob Hailemichael Yimer   +2 more
wiley   +1 more source

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