Results 111 to 120 of about 941,371 (339)

Molecular insight into the competitive adsorption mechanism of supercritical CO2/Crude oil in shale composite model

open access: yesPetroleum
With the continuous growth of global energy demand, shale oil, as an important unconventional oil and gas resource, is increasingly highlighting its strategic position.
Yuanxiu Sun   +5 more
doaj   +1 more source

Fracionamento do óleo essencial de Patchouli [Pogostemon cablin (Blanco) Benth.] obtido por extração supercrítica [PDF]

open access: yes, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.O fracionamento do óleo essencial de patchouli [Pogostemon cablin (Blanco) Benth.] extraído com dióxido de carbono ...
Araujo, Alex Copetti de
core  

Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater

open access: yesChemie Ingenieur Technik, EarlyView.
This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley   +1 more source

Experimental study on the influence of venting on temperature and pressure changes in impurity-containing supercritical CO2 pipeline

open access: yesYou-qi chuyun
Objective Impurities are inevitably present in CO2 transmitted through pipelines, and these substances have significant impacts on the venting process of supercritical CO2 pipelines, including temperature reductions, pressure drops, and phase changes of ...
Qihui HU   +5 more
doaj   +1 more source

Application of artificial neural network and general machine learning modelling on CO2 adsorption in moisture equilibrated South African high and medium rank coals

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the effect of moisture on CO2 adsorption in South African coals using both experimental and machine learning approaches. Three coal samples (SL, TN, and EM) with varying ranks (RoVmr: 3.49%, 1.26%, and 0.64%, respectively) were collected from different regions of South Africa.
Kasturie Premlall   +3 more
wiley   +1 more source

Impregnation of non-steroidal anti-inflammatory drugs (ibuprofen and ketoprofen) onto mesoporous silica SBA-15 using supercritical CO2

open access: yesJournal of CO2 Utilization
Ibuprofen and ketoprofen were impregnated onto SBA-15 type mesoporous silica using the supercritical fluid deposition (SCFD) method with supercritical carbon dioxide (CO2) as the solvent at temperatures ranging from 313 K to 343 K and a pressure of 15 ...
Kairi Yamamoto, Ikuo Ushiki
doaj   +1 more source

Extração e microencapsulamento de extratos de interesse biológico provenientes de pimenta-do-reino (Piper nigrum L.) e de pimenta rosa (Schinus terebinthifolius R.) [PDF]

open access: yes, 2015
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2015.O comércio de especiarias está em constante crescimento, e as pimentas figuram entre as mais ...
Andrade, Kátia Suzana
core  

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

Extração e avaliação do potencial antioxidante dos extratos obtidos da semente do tamarindo doce (Tamarindus indica) [PDF]

open access: yes, 2013
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2013.O objetivo deste trabalho foi avaliar a atividade antioxidante dos extratos da semente do ...
Reis, Páulia Maria Cardoso Lima
core  

Extraction of sunflower oil with supercritical CO2: Experiments and modeling

open access: yes, 2006
Extraction of sunflower oil from sunflower seeds (Heliantus annuus L.) using supercritical CO2 was studied. The shrinking core model was applied to the modeling of the packed-bed extraction process.
Doker, Onur, Salgin, Ugur, Calimli, Ayla
core   +1 more source

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