Results 41 to 50 of about 12,533 (231)

Optimization of Adsorption and Desorption Time in the Extraction of Volatile Compounds in Brewed Java Arabica Coffee Using the HS-SPME/GC-MS Technique

open access: yesJurnal Kimia Sains dan Aplikasi, 2022
The headspace solid phase microextraction (HS-SPME) technique has been recognized as a reliable technique for characterizing the aroma profile of Arabica coffee beans.
Lidwina Angelica Soetantijo   +4 more
doaj   +1 more source

Review: Insight on Porous Carbon Positive Electrode for Sodium‐Ion Capacitors: Interplay Between Synthesis, Properties, and Performance

open access: yesAdvanced Science, EarlyView.
Sodium ion capacitor (SIC) is currently constrained by the low discharge capacity of commercial activated carbon as positive electrode material. This review provides a holistic summary of research efforts on alternative porous carbon materials for SIC. Image created by the authors with www.biorender.com.
Ademola Adeniji   +2 more
wiley   +1 more source

Investigation on the Low-Temperature Transformations of Poly(furfuryl alcohol) Deposited on MCM-41 [PDF]

open access: yes, 2013
MCM-41-type mesoporous silica was used as a support for poly(furfuryl alcohol) deposition. This material was produced by precipitation–polycondensation of furfuryl alcohol (FA) in aqueous slurry of the SiO2 support followed by controlled partial ...
Cool, Pegie   +7 more
core   +2 more sources

Proximity Engineering of Fe‒N4 Twins for Oriented Generation of Singlet Oxygen for Hospital Wastewater Treatment

open access: yesAngewandte Chemie, Volume 138, Issue 12, 16 March 2026.
Precise modulation of Fe–N4 site distances constructs spin‐regulated Fe–N4 twins, triggering a volcano‐type Fenton‐like activity and promoting oriented singlet oxygen generation. The twin‐site catalyst enables highly selective and efficient hospital wastewater purification with simultaneous pharmaceutical degradation and disinfection under low ...
Xinhao Wang   +10 more
wiley   +2 more sources

Enhanced selective hydrogenation of furfural to furfuryl alcohol in the organic-solvent-free system over Co/NC via hydrogen spillover and acid-base modification

open access: yesResources Chemicals and Materials
: The aqueous-phase hydrogenation of furfural to furfuryl alcohol using non-noble metal catalysts is constrained by the low activity of catalysts, necessitating high temperatures and high hydrogen pressures, and posing challenges in controlling furfuryl ...
Yanliang Yang   +8 more
doaj   +1 more source

Emission of BTEX and PAHs from molding sands with furan cold setting resins containing different contents of free furfuryl alcohol during production of cast iron [PDF]

open access: yesChina Foundry, 2015
At present, furan resin is the largest selling no-bake system of moulding sands. The most commonly used furan no-bake binders (FNB) are condensation products of furfuryl alcohol (FA) urea, formaldehyde and phenol.
Mariusz Holtzer   +2 more
doaj  

Highly efficient catalytic valorization of biomass-derived hexoses and furfuryl alcohol in the presence of polymer-based catalysts

open access: yesGreen Energy & Environment, 2019
The catalytic transformation of furfuryl alcohol and hexose into value-added chemicals have been investigated with a series of polymer-based catalysts including poly(styrenesulfonic acid) (PSS), graphite oxide-doped poly(styrenesulfonic acid) (PSS-GO ...
Yangyang Zhang   +5 more
doaj   +1 more source

A RENEWABLE CATALYST FOR A RENEWABLE CHEMICAL: GRAM-SCALE CONVERSION OF FURFURAL TO FURFURYL ALCOHOL BY THE CARROT (Daucus carota) [PDF]

open access: yesQuímica Nova, 2020
The bioconversion of furfural to furfuryl alcohol using only carrot bits in water at room temperature and ambient pressure is presented. This reaction led to the bioreduction of furfural with 99% conversion and 99% selectivity to an alcohol.
Alvaro T. Omori   +3 more
doaj   +1 more source

The influence of metallic promoters on activity and selectivity of palladium catalyst in furfural reduction [PDF]

open access: yesJournal on Processing and Energy in Agriculture, 2015
The studies presented in this paper concern the choice of an effective bimetallic catalyst for the reduction of furfural to furfuryl alcohol (FA) and tetrahydrofurfuryl alcohol (THFA) in the liquid phase.
Modelska Magdalena   +5 more
doaj  

Formaldehyde free tannin-based adhesive with epoxy as hardener for plywood

open access: yesMaderas: Ciencia y Tecnología, 2022
A renewable tannin-based resin adhesive with enhanced bonding strength, good water resistance and long storage life has been prepared based on tannin, furfural and furfuryl alcohol coming from forest and agricultural products. Fourier transform infrared
Bowen Liu   +7 more
doaj  

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