Results 131 to 140 of about 138,710 (287)

Electron transport through rectifying self-assembled monolayer diodes on silicon: Fermi level pinning at the molecule-metal interface

open access: yes, 2006
We report the synthesis and characterization of molecular rectifying diodes on silicon using sequential grafting of self-assembled monolayers of alkyl chains bearing a pi group at their outer end (Si/sigma-pi/metal junctions).
Bouloussa, O.   +8 more
core   +4 more sources

Conformation‐Modulated Lignin for Durable and High‐Output Cellulosic Triboelectric Materials Toward Self‐Powered Sensing

open access: yesAdvanced Science, EarlyView.
Conformation‐engineered alkali lignin with flexible aliphatic side chains is integrated into cellulose to suppress tribo‐induced fiber fibrillation and interfacial wear. Dynamic chain adaptability enhances frictional energy dissipation and dielectric polarization, enabling durable, high‐output triboelectric sensing with excellent recyclability and ...
Lujie Wang   +11 more
wiley   +1 more source

Stage‐Specific Roles of Deep Eutectic Solvents in Recycling of Spent Lithium‐Ion Batteries

open access: yesAdvanced Energy Materials, EarlyView.
Deep eutectic solvents (DESs) offer tunable acidity, redox, and coordination properties for selective recycling of spent lithium‐ion battery cathodes. Through co‐dissolution, single‐ and two‐metal separations, DESs enable sustainable recovery of critical metals for closed‐loop regeneration of battery‐grade materials, advancing a circular economy for ...
Jingxiu Wang   +4 more
wiley   +1 more source

Esterification of Free Fatty Acid in Crude Palm Oil Off Grade

open access: yesJurnal Rekayasa Kimia & Lingkungan, 2009
The esterification of free fatty acids (FFA) found in crude palm oil (CPO) off grade with methanol is a promising technique to convert FFA into valuable fatty acid methyl ester (FAME, biodiesel) and obtain a FFA-free oil that can be further ...
Muhammad Dani Supardan   +1 more
doaj  

Breaking Down Lignin: A Macromolecule's Path to the Nanoscale

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
This section highlights lignin's critical role as a sustainable, multifunctional precursor for nanomaterial design. Its unique structure and abundance enable the creation of lignin‐based, lignin‐derived, and hybrid nanomaterials with tunable properties. Emphasis is placed on lignin's potential to drive innovation in nanotechnology, offering ecofriendly
Jelena Papan Djaniš   +3 more
wiley   +1 more source

Production of biodiesel from waste cooking oil using simultaneous esterification and transesterification process: an optimization study based on response surface methodology

open access: yesTạp chí Khoa học và Công nghệ
Waste cooking oil (WCO) is an abundant, low-cost feedstock for biodiesel, but its high free fatty acid (FFA) content challenges conventional base-catalyzed transesterification, often causing soap formation and low yield.
Dang Nguyen Thoai, Nguyen Thi Thuy Hong
doaj   +1 more source

Exploiting of Wasted Cooking Oil at Making Biodiesel Through Transesterification Process with Applies K2CO3 Catalyst as Fuel Diesel of Renewable [PDF]

open access: yes, 2011
This research aim is to know the influence from various USAge of K2CO3 catalyst and methanol solvent to biodiesel from wasted cooking oil. The making of biodiesel from waste cooking oil as raw material this before all was done by using esterification ...
ST.,M.T., Zulkarnain
core  

Influence of the esterification method on the quantification of olive oil fatty acids

open access: yesSemina: Ciências Exatas e Tecnológicas, 2011
To analyze fatty acids by gas chromatography, it is necessary to apply esterification procedures to convert fatty acids into more volatile compounds, such as fatty acid methyl esters (FAME).
Maria Cristina Milinsk   +6 more
doaj  

Cs2CO3‐N,N‐Dimethylacetamide‐Promoted Esterification of Arylformic Acids with a‐Bromo Esters via Nucleophilic Substitution

open access: yesChemistryOpen
Herein, a nucleophilic substitution reaction between arylformic acids and α‐bromo esters, facilitated by a Cs2CO3‐DMA system, is reported. This reaction occurs under mild conditions, yielding a diverse range of valuable lactic acid derivatives (34 ...
Xinyan Song   +10 more
doaj   +1 more source

Effects of detergents on activity, thermostability and aggregation of immobilized lipases [PDF]

open access: yes, 2014
Predmetom tejto diplomovej práce bolo štúdium vplyvu detergentov na aktivitu, termostabilitu a agregáciu voľnej a imobilizovanej formy komerčného preparátu lipázy izolovanej z mikroskopickej huby Rhizopus arrhizus. Teoretická časť obsahuje ucelenú rešerš
Bančáková, Anna
core  

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