Ultrasonic topic: "What is Sonochemistry?"
Sonochemistry is the application of ultrasound to chemical reactions and processes. SOnication is used to intensify chemical reactions such as synthesis and catalysis. When intense ultrasound waves are couples into liquids, the phenomenon of acoustic cavitation occurs. Ultrasonic cavitation improves mass transfer between reactants, speeds up the reaction and/or allows to change the chemicals pathway.
Learn more about Hielscher ultrasonic laboratory and industrial devices and how they are used in manifold sonochemical processes!
Found 60 hits. Showing results 37 - 48.
Ultrasonically Intensified Fixed Bed Reactors
Ultrasonic mixing and dispersion activates and intensifies the catalytic reaction in fixed bed reactors. The sonication improves the mass transfer and increases thereby efficiency, conversion rate and yield. An additional benefit is the removal of passivating fouling layers from the…
https://www.hielscher.com/ultrasonically-intensified-fixed-bed-reactors.htm
Ultrasonic Preparation of Reinforced Rubber
Reinforced rubbers show higher tensile strength, elongation, abrasion resistance and better aging stability. Fillers such as carbon black (e.g. CNTs, MWNTs), graphene, or silica must be homogeneously dispersed in the matrix to provide the desired material properties. Power ultrasonics gives…
https://www.hielscher.com/ultrasonic-preparation-of-reinforced-rubber.htm
Green Sonochemical Route to Silver Nanoparticles
Silver nanoparticles (AgNPs) are frequently utilized nanomaterials due to their anti-microbial properties, optical properties and high electrical conductivity. The sonochemical route using kappa carrageenan is a simple, convenient and environmental-friendly synthesis method for the preparation of silver nano particles. κ-carrageenan…
https://www.hielscher.com/green-sonochemical-route-to-silver-nanoparticles.htm
Ultrasonic Spray Pyrolysis
Ultrasonic Spray Pyrolysis (USP) is one of the important techniques to synthesize nano materials and to coat substrates with thin film coatings. Ultrasonic spraying and atomization allows for full process control resulting in homogeneous high-quality output. Ultrasonic spray pyrolysis excels…
https://www.hielscher.com/ultrasonic-spray-pyrolysis.htm
Ultrasonic Production of Nano-Structured Cellulose
Nanocellulose, a remarkable high-performance additive, has gained prominence for its versatile applications as a rheology modifier, reinforcing agent, and key component in various advanced materials. These nano-structured fibrils, derived from any cellulose-containing source, can be efficiently isolated through high-power ultrasonic…
https://www.hielscher.com/ultrasonic-production-of-nano-structured-cellulose.htm
Ultrasonic Preparation of Metal-Organic Frameworks (MOFs)
Metal-Organic Frameworks are compounds formed from metal ions and organic molecules so that a one-, two, or three-dimensional hybrid material is created. These hybrid structures can be porous or non-porous and offer manifold functionalities. The sonochemical synthesis of MOFs is…
https://www.hielscher.com/ultrasonic-preparation-of-metal-organic-frameworks-mofs.htm
Ultrasonic Crystallization and Precipitation
Ultrasound initiates and promotes the nucleation and crystallization of organic molecules. Having control over this process is vital to make sure the final product is of high quality. The advantages of using sonication for crystallization and making solids from liquids…
https://www.hielscher.com/ultrasonic-crystallization-and-precipitation.htm
Ultrasonic Synthesis of Fluorescent Nano Particles
Artificially synthesized fluorescent nano particles have manifold potential applications in the manufacturing of electrooptics, optical data storage, as well as for biochemical, bioanalytical and medical applications. Sonication is an effective and reliable method to synthesize fluorescent nano particles of high…
https://www.hielscher.com/ultrasonic-synthesis-of-fluorescent-nano-particles.htm
Sonochemistry: Application Notes
Sonochemistry is the effect of ultrasonic cavitation on chemical systems. Due to the extreme conditions that occur in the cavitational "hot spot", power ultrasound is an very effective method to improve reaction outcome (higher yield, better quality), conversion and duration…
https://www.hielscher.com/sonochemistry-application-notes.htm
Mixing H2S Scavengers for Phase-Transfer-Reaction
Hydrogen sulfide (H2S) is a colorless gas that occurs in crude oil and natural gas. H2S is poisonous, corrosive, flammable and explosive. It can be removed from oil and gas by scavengers, hydrodesulfurization, activated carbon filtration or reaction with iron…
https://www.hielscher.com/mixing-h2s-scavengers-for-phase-transfer-reaction.htm
Sonochemical Synthesis of Latex
Ultrasound induces and promotes the chemical reaction for the polymerization of latex. By sonochemical forces, the latex synthesis occurs faster and more efficient. Even the handling of the chemical reaction becomes easier. How Sonication Improves the Synthesis of Latex Ultrasound…
https://www.hielscher.com/sonochemical-synthesis-of-latex.htm
Ultrasonication Accelerates the Suzuki Coupling Reaction
The Suzuki Cross-Coupling (also known as Suzuki-Miyaura Coupling) is an organic reaction with the aim to synthesize biphenyl derivatives, vinyl aromates (e.g. styrenes), poly-olefins, as well as alkyl bromides. The reaction base materials are an aryl- or vinyl-boronic acid with…
https://www.hielscher.com/ultrasonication-accelerates-the-suzuki-coupling-reaction.htm