Results 51 to 60 of about 64,106 (285)

Optimization with Response Surface Methodology of Microwave-Assisted Conversion of Xylose to Furfural

open access: yesMolecules, 2020
The production of furfural from renewable sources, such as lignocellulosic biomass, has gained great interest within the concept of biorefineries. In lignocellulosic materials, xylose is the most abundant pentose, which forms the hemicellulosic part. One
Carmen Padilla-Rascón   +3 more
doaj   +1 more source

Simulation and optimization of temperature control and industrial design of hydrogen production of biomass via microwaves

open access: yes工程科学学报, 2023
Hydrogen production of biomass via microwaves is an efficient, rapid, and environmentally friendly chemical engineering technology. Lignin is the only renewable aromatic hydrocarbon resource in the nature, and thus, the lignin-based forest biomass, which
Si-kan WU   +5 more
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Constraints on mixing angles of Majorana neutrinos [PDF]

open access: yes, 1998
By combining the inputs from the neutrinoless double beta decay and the fits of cosmological models of dark matter with solar and atmospheric neutrino data, we obtain constraints on two of the mixing angles of Majorana neutrinos, which become stronger ...
A. Balysh   +42 more
core   +2 more sources

Organometallic Precursor‐Induced Gradient Architecture on Multilayer Nanoporous Graphene Membranes for Precise Organic Solvent Nanofiltration

open access: yesAdvanced Functional Materials, EarlyView.
Alumina growth narrows surface pores and seals non‐selective defects, enhancing selectivity while preserving the nanoporous graphene architecture. Additionally, the deposition enables gradient‐controlled structural modification, with intergrown alumina acting as a physical cross‐linker that stabilizes the laminar structure.
Junhyeok Kang   +8 more
wiley   +1 more source

Temperature measurements with two different IR sensors in a continuous-flow microwave heated system

open access: yesBeilstein Journal of Organic Chemistry, 2013
In a continuous-flow system equipped with a nonresonant microwave applicator we have investigated how to best assess the actual temperature of microwave heated organic solvents with different characteristics.
Jonas Rydfjord   +5 more
doaj   +1 more source

Optimization of Solid-Supported Glaser-Hay Reactions in the Microwave

open access: yesMolecules, 2015
The translation of organometallic reactions into a microwave reactor has numerous advantages. Herein, we describe the application of a previously developed solid-supported Glaser-Hay reaction to microwave conditions.
Jessica S. Lampkowski   +3 more
doaj   +1 more source

Ultrasound- and microwave-assisted preparation of lead-free palladium catalysts: effects on the kinetics of diphenylacetylene semi-hydrogenation [PDF]

open access: yes, 2015
The effect of environmentally benign enabling technologies such as ultrasound and microwaves on the preparation of the lead-free Pd catalyst has been studied.
Bonrath, Werner   +6 more
core   +1 more source

Microfluidical Microwave Reactor for Accelerating Chemical Reactions

open access: yesProcedia Engineering, 2015
AbstractMicrowave treatment can reduce the time of selected syntheses, for instance of the gold nanoparticles, from several hours to the few minutes. We propose microfluidic structure for enhancing rate of chemical reactions using microwave power. This reactor is designed to control microwave power with much higher accuracy than in standard devices ...
Macioszczyk, Jan   +3 more
openaire   +1 more source

Effects of Molecular Designs and Double‐Network Morphologies for Bioadhesive Semiconductors

open access: yesAdvanced Functional Materials, EarlyView.
This study establishes molecular‐to‐mesoscale design rules for bioadhesive semiconducting polymers (BASCs). It identifies how side‐chain length, double‐network formation, and film thickness modulate adhesion strength and electronic performance, providing insight into the rational design of intrinsically adhesive semiconductors for stable and efficient ...
Zhichang Liu   +8 more
wiley   +1 more source

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