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 25 - 36.
Efficient Hydrogen Production with Ultrasonics
Hydrogen is an alternative fuel that is preferable due to its environmental-friendliness and zero carbon dioxide emission. However, conventional hydrogen generation is not efficient for economical mass production. The ultrasonically promoted electrolysis of water and alkaline water solutions results in…
https://www.hielscher.com/efficient-hydrogen-production-with-ultrasonics.htm
Ultrasonic Synthesis of Molecularly Imprinted Polymers (MIPs)
Molecularly Imprinted Polymers (MIPs) are artificially designed receptors with a predetermined selectivity and specificity for a given biological or chemical molecule structure. Ultrasonication can improve various synthesis pathways of molecularly imprinted polymers making the polymerization more efficient and reliable. What…
https://www.hielscher.com/ultrasonic-synthesis-of-molecularly-imprinted-polymers-mips.htm
High Shear Mixing with Ultrasonics
High shear mixers apply high shear forces into liquids and slurries in order to provide the uniform dispersing, blending, and emulsification of two or more liquid-solid or liquid-liquid phases. Ultrasonication generates high shear forces via acoustic cavitation, which occurs when…
https://www.hielscher.com/high-shear-mixing-with-ultrasonics.htm
Ultrasonic Disintegration: Wetting, Dissolving, Dispersing
Ultrasonic integrators are widely used to wet, disperse or dissolve particles and powders into liquids. High-performance ultrasonicators create intense shear forces, which break and shatter aggregates, agglomerates and primary particles to microscopic or nano size. The uniform particle processing in…
https://www.hielscher.com/disintegration-wetting-dissolving-dispersing.htm
Synthesizing Nano-Silver with Honey and Ultrasonics
Nano-silver is use for its anti-bacterial properties to reinforce materials in medicine and material science. Ultrasonication allows for a rapid, efficacious, safe, and environmental-friendly synthesis of spherical silver nanoparticles in water. Ultrasonic nanoparticle synthesis can be easily scaled from small…
https://www.hielscher.com/synthesizing-nano-silver-with-honey-and-ultrasonics.htm
Coronavirus (COVID-19, SARS-CoV-2) and Ultrasonics
Ultrasonication is a powerful tool used in biology, molecular chemistry and biochemistry as well as in the production of pharmaceuticals. Bio-sciences use ultrasonic homogenizers to lyse cells and extract proteins and other intracellular materials, the pharma industry applied ultrasonics to…
https://www.hielscher.com/coronavirus-covid-19-sars-cov-2-and-ultrasonics.htm
Ultrasonic Effects on Precipitation and Froth Flotation
Industrial waste waters are often heavily acidified due to the excessive use of sulphuric acid. Acidified wastewater containing heavy metals are commonly treated by chemical precipitation after coagulation and flocculation. Ultrasonic conditioning before the flotation resulted in a significant improved…
https://www.hielscher.com/ultrasonic-effects-on-precipitation-and-froth-flotation.htm
Perovskite Synthesis by Ultrasonication
Ultrasonically induced and intensified reactions offer a facile, precisely controllable and versatile synthesis method for the production of light-activated materials, which often cannot prepared by conventional techniques. The ultrasonic crystallization and precipitation of perovskite crystals is a highly effective and…
https://www.hielscher.com/perovskite-synthesis-by-ultrasonication.htm
Ultrasonic Marine Fuel Desulphurization
Marine fuels are affected by new regulations, which require a sulphur content of 0.5%m/m or less. Ultrasound-assisted oxidative desulfurization (UAOD) is an established method that accelerates the oxidation reaction and is an economical and safe process. UAOD processes can be…
https://www.hielscher.com/ultrasonic-marine-fuel-desulphurization.htm
Ultrasonic Phosphor Recovery from Sewage Sludge
The worldwide demand for phosphor is increasing, whilst the supply of natural phosphorus resources are getting scarce. Sewage sludge and sewage sludge ash are rich in phosphorus and can be therefore used as source to reclaim phosphorus. The ultrasonic wet-chemical…
https://www.hielscher.com/ultrasonic-phosphor-recovery-from-sewage-sludge.htm
Ultrasonically Polyhydroxylated C60 (Fullerenol)
Water-soluble polyhydroxylated C60 fullerene, called fullerenol or fullerol, is a strong free radical scavenger and is therefore used as an antioxidant in supplements and pharmaceuticals. Ultrasonic hydroxylation is a rapid and simple one-step reaction, which is used to produce water-soluble…
https://www.hielscher.com/ultrasonic-polyhydroxylated-c60-fullerenol.htm
Sonication in Multi-Neck Flasks
Sonication is widely used for chemical and biochemical reactions. Hielscher supplies standardized ground joint adapters to insert the ultrasonic sonotrode into reaction vessels such as round-bottom flasks, multi-neck flasks and other lab glass ware. For a sophisticated setup of an…
https://www.hielscher.com/sonication-in-multi-neck-flasks.htm