Utrasonic topic: "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!
24 pages about this topic are being shown:
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…
https://www.hielscher.com/sonication-in-multi-neck-flasks.htm
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…
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…
https://www.hielscher.com/ultrasonic-preparation-of-reinforced-rubber.htm
Ultrasonic Hydrodistillation of Essential Oils
The conventional extraction of essential oils is expensive and time-consuming. Ultrasonic extraction gives higher yields and superior extract quality. Ultrasonic can be carried out as solvent- or water-based extraction method. Alternatively, sonication can be combined with traditional extraction systems…
https://www.hielscher.com/ultrasonic-hydrodistillation-of-essential-oils.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.…
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…
https://www.hielscher.com/ultrasonic-spray-pyrolysis.htm
Ultrasonic Production of Nano-Structured Cellulose
Nanocellulose is a high-performance additive which is successfully used as rheology modifier, reinforcing agent and additive in manifold high-performance materials and applications. The nano-structured fibrils can be very efficiently isolated from any cellulose-containing source by high-power ultrasonic homogenization and…
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…
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. The control over crystallization and precipitation processes is important to ensure a high product quality. The main advantages of ultrasonic crystallization and precipitation beside a full process control…
https://www.hielscher.com/ultrasonic-crystallization-and-precipitation.htm
Ultrasonic Synthesis of Fluorescent Nano Particles
Artifically 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…
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…
https://www.hielscher.com/sonochemistry-application-notes.htm
Ultrasonic Treatment of Nanoparticles for Pharmaceuticals
Ultrasound is an innovative technology that is used successfully for sonochemical synthesis, deagglomeration, dispersion, emulsifying, functionalization and activation of particles. Particularly in nanotechnology, the ultrasonication is an essential technique for the synthesis and processing purposes of nano-size materials. Since…
https://www.hielscher.com/ultrasonic-treatment-of-nanoparticles-for-pharmaceuticals.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…
https://www.hielscher.com/mixing-h2s-scavengers-for-phase-transfer-reaction.htm
Ultrasonic Extraction of Caffeine and Other Active Compounds
Using ultrasonics is an effective method for the extraction of caffeine and other active compounds from coffee. Powerful ultrasonic devices assist the extraction process whilst maximizing yield and shortening processing time. Coffee – made from roasted coffee beans -…
https://www.hielscher.com/ultrasonic-extraction-of-caffeine-and-other-active-compounds.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. Latex particles are widely used as additive…
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…
https://www.hielscher.com/ultrasonication-accelerates-the-suzuki-coupling-reaction.htm
Ultrasonically Assisted Fermentation for Bioethanol Production
Fermentation Fermentation can be an aerobic (= oxidative fermentation) or anaerobic process, which is used for biotechnological applications to convert organic material by bacterial, fungal or other biological cell cultures or by enzymes. By fermentation, energy is extracted from…
https://www.hielscher.com/ultrasonically-assisted-fermentation-for-bioethanol-production.htm
MultiPhaseCavitator-Insert for Ultrasonic Flow Cell
The MultiPhaseCavitator Insert (InsertMPC48) is designed to improve the ultrasonic processing of liquid/liquid or liquid/gas mixes. 48 very fine cannulas inject liquid or gas into a liquid phase right in the cavitation zone. This creates very small suspended droplets or…
https://www.hielscher.com/multiphasecavitator-insert-for-ultrasonic-flow-cell-reactor.htm
Sonochemical Effects on Sol-Gel Processes
Introduction Ultrafine nano-sized particles and spherical shaped particles, thin film coatings, fibers, porous and dense materials, as well extremely porous aerogels and xerogels are highly potential additives for the development and production of high performance materials. Advanced materials, including…
https://www.hielscher.com/sonochemical-effects-on-sol-gel-processes.htm
Ultrasonically Induced and Enhanced Phase Transfer Catalysis
High power ultrasound is well-known for its contribution to various chemical reactions. This is the so-called sonochemistry. Heterogeneous reactions – and especially phase transfer reactions – are highly potential application fields for power ultrasound. Due to the mechanical and…
https://www.hielscher.com/ultrasonically-induced-and-enhanced-phase-transfer-catalysis.htm
Ultrasonically Assisted Oxidative Desulfurization (UAODS)
Sulfur-containing compounds in crude oil, petroleum, diesel and other fuel oils include sulfides, thiols, thiophenes, substituted benzo- and dibenzothiophenes (BTs and DBTs), benzonaphthothiophene (BNT), and many more complex molecules, in which the condensed thiophenes are the most common forms. Hielscher…
https://www.hielscher.com/oil_desulfurization_01.htm
Sonocatalysis – Ultrasonically Assisted Catalysis
Ultrasonication affects the catalyst reactivity during catalysis by enhanced mass-transfer and energy input. In heterogeneous catalysis, where the catalyst is in a different phase to the reactants, ultrasonic dispersion increases the surface area available to the reactants. Background…
https://www.hielscher.com/sonocatalysis_catalysis.htm
Sonochemical Reaction and Synthesis
Sonochemistry is the application of ultrasound to chemical reactions and processes. The mechanism causing sonochemical effects in liquids is the phenomenon of acoustic cavitation. Hielscher ultrasonic laboratory and industrial devices are used in a wide range of…
https://www.hielscher.com/sonochem_01.htm
Ultrasonics: Applications and Processes
Ultrasonication is used in many applications, such as homogenizing, disintegration, sonochemistry, degassing or cleaning. Below, you find a systematic overview over the various ultrasonic applications and processes. Please click at the items of the following list for…
https://www.hielscher.com/technolo.htm