Results 131 to 140 of about 112,781 (355)

Method for growth of crystals by pressure reduction of supercritical or subcritical solution [PDF]

open access: yes, 1985
Crystals of high morphological quality are grown by dissolution of a substance to be grown into the crystal in a suitable solvent under high pressure, and by subsequent slow, time-controlled reduction of the pressure of the resulting solution. During the
Shlichta, P. J.
core   +1 more source

Two‐Step Synthesis of 2,5‐Furandicarboxylic Acid Through Biomass‐Derived 5‐(Hydroxymethyl)furfural in a Green Isopropanol–Water Solvent System

open access: yesChemCatChem, EarlyView.
This work introduces a green catalytic route for producing FDCA from whey permeate powder using an isopropanolwater solvent and a reusable CuFeO catalyst. The process converts dairy waste into valuable bio‐based monomers through sequential HMF formation and oxidation, offering an efficient, sustainable pathway for renewable materials production ...
Surabhi Pandey   +3 more
wiley   +1 more source

Well‐Defined Rhodium and Iridium Complexes Containing Chiral Cyclic(Alkyl)(Amino)Carbenes for Asymmetric Hydrogenation

open access: yesChemistryEurope, EarlyView.
A set of fourteen well‐defined rhodium and iridium complexes containing various enantiopure cyclic(alkyl)(amino)carbene (ChiCAAC) ligands (>96% ee to > 99.5% ee) has been synthesized and fully characterized. While no enantioselectivity is observed with chiral Rh‐CAAC, the Ir‐CAAC counterparts demonstrated good performances in the asymmetric ...
Fanny Morvan   +7 more
wiley   +1 more source

Harnessing the Power of 2D Materials for Flexible Energy Harvesting Applications

open access: yesCarbon Energy, EarlyView.
Ambient energy harvesting offers transformative potential for sustainable energy solutions, with 2D materials emerging as a game‐changing platform due to their atomic‐scale thickness, tunable properties, and versatility. This review explores the mechanisms, advantages, and challenges of 2D material–based energy harvesting technologies, emphasizing ...
Muhammad Zubair   +2 more
wiley   +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

State Estimation of a Packed-Bed Reactor Using Ensemble Kalman Filter

open access: yesJournal of Chemical Engineering of Japan
This paper describes a method of estimation of concentration and temperature distribution in a packed-bed reactor with high exothermic reactions.
Masatoshi Yoshida   +3 more
doaj   +1 more source

Integrated and closed‐loop biorefinery strategies for efficient waste valorization and biofuel production

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Advancements in biofuel production technologies are essential for reducing global dependence on fossil fuels and addressing their overexploitation. Many valuable components of biomass, such as cellulose, hemicellulose, and lignin, remain underused in traditional biorefineries, which typically rely on a single feedstock to produce a primary ...
Marcos Paulo Patta Granado   +5 more
wiley   +1 more source

Effect of supercritical fluid density on nanoencapsulated drug particle size using the supercritical antisolvent method

open access: yesInternational Journal of Nanomedicine, 2012
Mahshid Kalani, Robiah YunusChemical and Environmental Engineering, Faculty of Engineering, University Putra Malaysia, Selangor Darul Ehsan, MalaysiaAbstract: The reported work demonstrates and discusses the effect of supercritical fluid density ...
Kalani M, Yunus R
doaj  

High-fidelity database of supercritical homogeneous isotropic turbulence in the pseudo-boiling region

open access: yesScientific Data
Supercritical fluids operate above their critical point and are characterized by strong nonlinearities in the equation of state, highly non-ideal fluid behavior, and a tight coupling between thermodynamics and transport properties.
David Martín, Lluís Jofre
doaj   +1 more source

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