Results 21 to 30 of about 408,343 (365)

Subcritical liquified dimethyl ether and supercritical fluid carbon dioxide extraction of gamma oryzanol from rice bran acid oil

open access: yesJournal of Agriculture and Food Research, 2023
Gamma oryzanol (γ-oryzanol) is a bioactive compound in rice bran acid oil, a by-product of the rice bran oil refining process that possesses various pharmacological properties.
Sudthida Kamchonemenukool   +3 more
doaj   +1 more source

Cellulosic materials as biopolymers and supercritical CO2as a green process: chemistry and applications [PDF]

open access: yes, 2012
In this review, we describe the use of supercritical CO2 (scCO2) in several cellulose applications. The focus is on different technologies that either exist or are expected to emerge in the near future.
Camy, Séverine   +2 more
core   +3 more sources

Methods for synthesizing diethyl carbonate from ethanol and supercritical carbon dioxide by one-pot or two-step reactions in the presence of potassium carbonate [PDF]

open access: yes, 2009
Carbon dioxide sequestration was studied by synthesizing diethyl carbonate (DEC) from ethanol and CO2 under supercritical conditions in the presence of potassium carbonate as a base. The co-reagent was ethyl iodide or a concentrated strong acid.
Gasc, Fabien   +2 more
core   +1 more source

Glycerol as a cheap, safe and sustainable solvent for the catalytic and regioselective β,β-diarylation of acrylates over palladium nanoparticles [PDF]

open access: yes, 2010
Herein we show that glycerol can be considered as a promising cheap and green solvent for the regioselective β,β-diarylation of alkenes. Whereas this reaction is generally catalyzed under an inert atmosphere by expensive phosphine or carbene-palladium ...
Barrault, Joel   +7 more
core   +2 more sources

Application of Genetic Algorithm on Model-Based Optimisation of Supercritical Carbon Dioxide Extraction: An Overview

open access: yesChemical Engineering Transactions, 2017
Green supercritical carbon dioxide extraction technology has gained enormous interest especially in the application of extraction of natural products. The use of carbon dioxide as solvent in the extraction process is very advantageous as carbon dioxide ...
M.A. Mohamed Zahari, L.M. Salleh
doaj   +1 more source

Review of experimental research on supercritical and transcritical thermodynamic cycles designed for heat recovery application [PDF]

open access: yes, 2019
Supercritical operation is considered a main technique to achieve higher cycle efficiency in various thermodynamic systems. The present paper is a review of experimental investigations on supercritical operation considering both heat-to-upgraded heat and
De Paepe, Michel   +6 more
core   +2 more sources

Subcritical water and supercritical carbon dioxide: efficient and selective eco-compatible solvents for coffee and coffee by-products valorization

open access: yes, 2020
This review aims to establish the state of the art of the existing literature on the valorization of coffee and coffee by-products (i.e. green coffee, coffee husk, pulp, silverskin and spent coffee grounds) through the use of pressurized fluids as ...
Alexandre Vandeponseele   +3 more
semanticscholar   +1 more source

Optimization Design Research of Supercritical Carbon Dioxide Power Cycle under Low-temperature Heat Sink Environment

open access: yesYuanzineng kexue jishu, 2023
This paper presents a cold-end optimization design study of a nuclear energy power conversion system in the context of low-temperature heat sink applications.
WANG Dianle;HUANG Yanping;YIN Kaikai;LIU Minyun;ZHOU Yuan;LAI Xiangpeng;LI Yong
doaj  

The possibility of hydrocarbon systems formation by thermometamorphical genesis and the role of hydrothermal super critical fluids [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
Using the example of supercritical fluids of carbon dioxide and water acssociation from the standpoint of supercritical fluid extraction of organic substances from sedimentary rocks and supercritical cracking of hydrocarbons, the possibility of formation
Abramov V.Yu., Pyataev A.A.
doaj   +1 more source

Process analysis of pressurized oxy-coal power cycle for carbon capture application integrated with liquid air power generation and binary cycle engines [PDF]

open access: yes, 2015
In this paper, the thermodynamic advantage of integrating liquid air power generation (LAPG) process and binary cycle waste heat recovery technology to a standalone pressurized oxy-coal combustion supercritical steam power generation cycle is ...
Aneke, Mathew, Wang, Meihong
core   +1 more source

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