Results 81 to 90 of about 340,792 (319)

Review and bibliometric study of CO2 supercritical energy cycles. Current state of research and development

open access: yesАвіаційно-космічна техніка та технологія
Recent decades have been characterized by growing interest in research into improving the efficiency of these cycles. The purpose of this work is a bibliometric analysis based on Scopus data (2001-2024) and an overview of the main trends associated with ...
Hanna Vorobiova
doaj   +1 more source

Understanding the Role of Morphology in the Direct Synthesis of Diethyl Carbonate Over Ceria‐Based Catalysts: An In Situ Infrared and High‐Resolution TEM Study

open access: yesChemCatChem, EarlyView.
Pure and Zr‐doped ceria‐based catalysts with different morphologies were developed for the direct synthesis of diethyl carbonate from ethanol and CO2. Rod‐shaped pure CeO2 outperformed the other samples, thanks to abundant structural defects and high basicity.
Mara Arduino   +4 more
wiley   +1 more source

Development and Validation of a Laboratory‐Scale Methanol Synthesis Mini‐Plant and Digital Twin Simulation

open access: yesChemie Ingenieur Technik, EarlyView.
A methanol mini‐plant and its digital twin were developed to study flexible feedstocks, reactant recycling, and product condensation. Experimental results show good agreement with simulations, allowing systematic investigation of process parameters. Tests with biomass‐derived syngas demonstrated the feasibility of industrial COx sources.
Timothy A. Nowak   +5 more
wiley   +1 more source

Corn cob pyrolysis: A systematic literature review of methods and applications

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Mapping the research landscape of corn cob pyrolysis. Abstractas The agricultural sector is experiencing a surge in waste generation due to population growth, creating an urgent need to convert byproducts into value‐added products. Maize (Zea mays L.), a leading global crop, produces significant byproducts, such as corn cob, which are often undervalued.
Vilmar Steffen   +5 more
wiley   +1 more source

Comparison of the Anti-Inflammatory Activities of Supercritical Carbon Dioxide versus Ethanol Extracts from Leaves of Perilla frutescens Britt. Radiation Mutant

open access: yesMolecules, 2017
In this study, we aimed to compare supercritical carbon dioxide extraction and ethanol extraction for isoegomaketone (IK) content in perilla leaf extracts and to identify the optimal method.
Chang Hyun Jin   +5 more
doaj   +1 more source

Local sensitivity analysis of a supercritical extraction model

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from chamomile flowers. A parameter‐distributed model, consisting of a set of partial differential equations, was used to describe the governing mass transfer phenomena between solid and fluid phases under supercritical conditions using carbon dioxide as the solvent.
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Supercritical Calorimetry: An Emerging Field

open access: yesCHIMIA, 2002
Calorimetry (adiabatic, isothermal, differential, oscillating or acoustic) is generally based on heat-flow measurements of the studied system. Most of its applications are dedicated to kinetic-parameter determination, safety studies and process ...
Frédéric Lavanchy   +2 more
doaj   +1 more source

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo   +4 more
wiley   +1 more source

A laboratory approach on the improvement of oil recovery and carbon dioxide storage capacity improvement by cyclic carbon dioxide injection

open access: yesEnergy Reports, 2021
This paper experimentally investigated influential thermodynamic reservoir characteristics such as pressure, temperature, soaking time, core stimulation, number of cycles, shale particle size, and carbon dioxide phase during the cycling carbon dioxide ...
Qing Guo   +6 more
doaj  

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