Results 41 to 50 of about 13,676 (263)

Zeolite-based catalysis for isobutene conversion into chemicals and fuel additives. A review

open access: yesComptes Rendus. Chimie, 2022
Isobutene (IB), the most reactive molecule in the C4 raffinate, is a raw material of great industrial significance. It is extensively used in the manufacturing process of rubber, fuel additives, fine chemicals, agricultural chemicals, plastics and ...
Hulea, Vasile
doaj   +1 more source

Functionality Enhancement of Pullulan-Based Composites for Food Packaging Applications. [PDF]

open access: yesCompr Rev Food Sci Food Saf
ABSTRACT Contemporary research in food packaging is focused on developing sustainable alternatives to petroleum‐based materials. Pullulan, a microbial biopolymer traditionally employed as a food additive, is harnessing interest for food packaging applications due to its exceptional film‐forming ability, biodegradability, and nontoxic nature.
Shrestha BB, Mitra J, George S.
europepmc   +2 more sources

Curing kinetics, mechanism and chemorheological behavior of methanol etherified amino/novolac epoxy systems [PDF]

open access: yes, 2014
The curing kinetics and mechanism of epoxy novolac resin (DEN) and modified epoxy novolac resin (MDEN) with methanol etherified amino resin were studied by means of differential scanning calorimetry (DSC), Fourier transforminfrared (FT-IR) spectroscopy ...
C. P. Wong   +3 more
core   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

open access: yesAdvanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini   +3 more
wiley   +1 more source

H3PW12O40 (HPA), an efficient and reusable catalyst for biodiesel production related reactions: esterification of oleic acid and etherification of glycerol

open access: yesQuímica Nova, 2011
In esterification of oleic acid with methanol at 25 °C HPA displayed the highest activity. Moreover the HPA could be reused after being transformed into its cesium salt.
Jorge H. Sepúlveda   +5 more
doaj   +1 more source

Microwave-Assisted Glycerol Etherification Over Sulfonic Acid Catalysts [PDF]

open access: yesMaterials, 2020
Glycerol is the main by-product of biodiesel production. For this reason, its valorization into value-added products, by using green procedures, represents an important goal. Different sulfonic acid silica- or titania-based catalysts were prepared, characterized and tested in the glycerol etherification process, assisted by microwaves, in order to ...
Laura Aguado-Deblas   +5 more
openaire   +5 more sources

Smart REASSURED Sensors via Machine‐Augmented Printable On‐Paper Arrays

open access: yesAdvanced Sensor Research, EarlyView.
This perspective highlights the emerging role of pattern‐recognition, printable on‐paper sensor arrays for intelligent PoC diagnostics. It discusses how paper's inherent limitations can be overcome through surface modification and scalable printing, and how machine‐learning analysis of cross‐reactive arrays enables multiplexed, low‐cost, and REASSURED ...
Naimeh Naseri, Saba Ranjbar
wiley   +1 more source

Biodiesel wastes: An abundant and promising source for the preparation of acidic catalysts for utilization in etherification reaction [PDF]

open access: yes, 2014
Environmentally friendly sulfonated black carbon (BC) catalysts were prepared from biodiesel waste, glycerol. These black carbons (BCs) contain a high amount of acidic groups, mainly sulfonated and oxygenated groups.
Carvalho, Wagner Alves   +5 more
core   +2 more sources

SnBr2-catalyzed highly selective synthesis of alkyl ethers from monoterpenes

open access: yesComptes Rendus. Chimie, 2020
An efficient and Brønsted acid-free route to synthesize monoterpene ethers was developed using SnBr2 as inexpensive and commercially affordable catalyst.
da Silva, Márcio J.   +2 more
doaj   +1 more source

Reaction Mechanisms Applied to Starch Modification for Biodegradable Plastics: Etherification and Esterification

open access: yesInternational Journal of Polymer Science, 2022
Although many studies are being actively conducted to develop biodegradable plastic materials, most of these reports focused more on efficiency or performance improvement than on the reaction mechanism. This paper discussed the reaction mechanism applied
Yongeun Kim, Cheolsoo Jung
doaj   +1 more source

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