Results 101 to 110 of about 68,000 (273)

Titanium Dioxide Induced Immobilization of Small Platinum Nanoparticles on Carbon Spherogels: A Strategy Towards Stable and Efficient Electrocatalysts for the Hydrogen Evolution Reaction

open access: yesSmall, EarlyView.
Platinum nanoparticles are immobilized on hollow carbon spherogels using supercritical deposition, enabling precise control over nanoparticle size, loading, and spatial distribution. Incorporation of an internal TiO2 sublayer in the hollow sphere support induces enhanced metal–support interactions, markedly improving hydrogen evolution activity and ...
Philip S. Pein   +11 more
wiley   +1 more source

Recent advances of emergent extraction technologies to enhance bioactive compounds extraction of microalgae—An overview towards application in cosmetics

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Microalgae extracts show immense potential in cosmetics for their bioactivities; emerging extraction techniques enhance bioactive compound yield from microalgae. Abstract Microalgae have attracted significant interest in numerous sectors, particularly in the cosmetic industries, owing to their rich composition of bioactive compounds. This paper aims to
Alireza Mousakhani Ganjeh   +5 more
wiley   +1 more source

Optimizing the process of supercritical extraction of lemon balm (Melissa Officinalis L.) [PDF]

open access: yes, 2010
This work investigates the process of extraction of lemon balm (Melissa officinalis L.) by treatment with carbon dioxide at supercritical conditions. The process kinetics is studied at different operational conditions, and the influence of some important
Angelov, George   +3 more
core   +1 more source

Probing Active Sites During Palladium-Catalyzed Alcohol Oxidation in "Supercritical” Carbon Dioxide [PDF]

open access: yes, 2018
Structural information has been gained during aerobic benzyl alcohol oxidation in "supercritical” carbon dioxide at 150 bar on alumina-supported palladium by X-ray absorption spectroscopy while monitoring simultaneously the performance of the catalyst ...
Baiker, Alfons   +3 more
core  

Spherically averaged versus angle-dependent interactions in quadrupolar fluids

open access: yes, 2008
Employing simplified models in computer simulation is on the one hand often enforced by computer time limitations but on the other hand it offers insights into the molecular properties determining a given physical phenomenon.
Binder, Kurt   +5 more
core   +1 more source

Short-term interactions between Longmaxi shale and carbon dioxide-based fracturing fluids

open access: yesHeliyon
The shale is a dense quarried rock material containing abundant shale oil/gas. Extracting shale gas usually requires fracturing the rock formation to speed up gas desorption and migration.
Guojun Liu   +4 more
doaj   +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

Non-conventional approaches to food processing in CELSS, 1. Algal proteins: Characterization and process optimization [PDF]

open access: yes
Protein isolate obtained from green algae cultivated under controlled conditions was characterized. Molecular weight determination of fractionated algal proteins using SDS-polyacrylamide gel electrophoresis revealed a wide spectrum of molecular weights ...
Karel, M., Krukonis, V. J., Nakhost, Z.
core   +1 more source

Study on Rock Characteristics of Borehole Wall during Supercritical Carbon Dioxide Drilling

open access: yesShiyou jixie, 2022
Borehole instability seriously affects the drilling production. Studying the influence of supercritical carbon dioxide on the rock characteristics of drilling borehole is beneficial to ensure the borehole stability.
Meng Zhaofeng
doaj  

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