Results 31 to 40 of about 60,233 (206)

Applications of Supercritical Fluids in Powder Processing

open access: yesKONA Powder and Particle Journal, 2014
This paper reviews methods of producing particles using supercritical fluids. First it explains the properties of supercritical fluids, phase behaviors of supercritical solutions, and reaction equilibrium and ...
Tadafumi Adschiri
doaj   +1 more source

A Review of Biodiesel Production from Renewable Resources: Chemical Reactions

open access: yesChemical Engineering Transactions, 2021
Biodiesel has become an attractive renewable fuel due to carbon footprint reduction. Greenhouse gas footprint is minimised when the locally available renewable feedstock is utilised for cleaner biodiesel production.
Lai Fatt Chuah   +3 more
doaj   +1 more source

Dynamic modelling of a fractionation process for a liquid mixture using supercritical carbon dioxide [PDF]

open access: yes, 2001
This work presents a simple dynamic modelling of a process of separation of a quaternary mixture using supercritical CO2. Thermodynamic description is accomplished using efficient available models (SRK equation of state with MHV2 mixing rules).
Abrams   +18 more
core   +3 more sources

Continuous catalyst-free biodiesel synthesis from rice bran oil fatty acid distillate in a microreactor

open access: yesEnergy Reports, 2020
This work proposed the catalyst-free biodiesel synthesis from the low-grade feedstock. Rice bran oil fatty acid distillate (RBOFAD) containing 65.5% of free fatty acids and ethanol were applied as a feedstock.
Nattee Akkarawatkhoosith   +2 more
doaj   +1 more source

Fluid phase equilibria of the reacting mixture in the dimethyl carbonate synthesis from supercritical CO2 [PDF]

open access: yes, 2003
In order to investigate the dimethyl carbonate synthesis from methanol and supercritical CO2, the thermodynamic behaviour of the reacting mixture, i.e. the quaternary methanol/CO2/DMC/water mixture, has to be known.
Badens, François   +3 more
core   +2 more sources

Cleaner Routes for Friedel-Crafts Acylation [PDF]

open access: yes, 2010
Friedel-Crafts acylation is among the most fundamental and useful reactions to yield aromatic ketones but it is one of the less acceptable in terms of unwanted polluting by-products or atom economy because of the overconsumption of catalyst which is used
Aribert, Nicolas   +4 more
core   +2 more sources

Lipopeptide overproduction by cell immobilization on iron-enriched light polymer particles [PDF]

open access: yes, 2009
The study concerns surfactin and/or fengycin batch production by immobilized cells of Bacillus subtilis ATCC 21332. Light carriers designed for a three phase inverse fluidized bed biofilm reactor (TPFIBR) were used.
Gancel, Frédérique   +4 more
core   +1 more source

Decoding the N-doping mechanism for enhanced CO2 adsorption on biochar

open access: yesCarbon Capture Science & Technology
The growing demand for efficient carbon capture technologies has led to the exploration of biochar as a promising material for CO2 adsorption, particularly through modifications such as nitrogen doping to enhance its performance.
Shuo Xiang   +7 more
doaj   +1 more source

Process Synthesis of an S-CO2Brayton Cycle Operating at an Ultra-Supercritical Steam Cycle Level

open access: yesChemical Engineering Transactions, 2019
Supercritical CO2 (S-CO2) Brayton cycle perceives the advantages of high cycle efficiency and compact turbine machinery. In certain temperature ranges, its cycle efficiency can be higher than that of a steam Rankine cycle.
Senjing Qin, Pei Liu
doaj   +1 more source

Inclusion of [H3PW12O40] and [H4SiW12O40] into a silica gel matrix via "sol-gel" methodology [PDF]

open access: yes, 2017
Indexación: Web of Science; Scopus.Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods.
Carey, D.M.   +4 more
core   +1 more source

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