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 13 - 24.
Sonochemically Improved Mannich Reactions
Mannich reaction are important carbon–carbon bond forming reactions, which are widely used in industries such as the pharmaceutical production and the synthesis of natural products. Whilst most of one-pot Mannich reactions are very slow, the positive effects of ultrasonication on…
https://www.hielscher.com/sonochemically-improved-mannich-reactions.htm
Ultrasonic Preparation of Catalysts for Dimethyl Ether (DME) Conversion
Dimethyl ether (DME) is a favourable alternative fuel, which can be synthesised from methanol, CO2 or syngas through catalysis. For the catalytic conversion to DME, potent catalysts are required. Nano-sized mesoporous catalysts such as mesoporous acidic zeolites, decorated zeolites or…
https://www.hielscher.com/ultrasonic-preparation-of-catalysts-for-dimethyl-ether-dme-conversion.htm
Continuously Stirred-Tank Reactors Agitated with Ultrasound
Continuously stirred tank reactors (CSTR) are widely applied for various chemical reactions including catalysis, emulsion chemistry, polymerization, synthesis, extraction and crystallization. Slow reaction kinetics is a common problem in CSTR, which can easily be overcome by the application of power-ultrasonication.…
https://www.hielscher.com/continuously-stirred-tank-reactors-agitated-with-ultrasound.htm
Sonochemistry and Sonochemical Reactors
Sonochemistry is the field of chemistry where high-intensity ultrasound is used to induce, accelerate and modify chemical reactions (synthesis, catalysis, degradation, polymerization, hydrolysis etc.). Ultrasonically generated cavitation is characterized by unique energy-dense conditions, which promote and intensify chemical reactions. Faster…
https://www.hielscher.com/sonochemistry-and-sonochemical-reactors.htm
Flow Cells and Inline Reactors for Lab Ultrasonicators
Ultrasonic lab homogenizers can be used for batch and inline processing of liquids and slurries. Typical applications include homogenization, dispersing, emulsification, dissolving as well as sonochemical reactions. For the continuous inline sonication, flow cells and in-line reactors in various sizes…
https://www.hielscher.com/flow-cells-and-inline-reactors-for-lab-ultrasonicators.htm
Synthesis and Functionalization of Zeolites using Sonication
Zeolites including nano-zeolites and zeolite derivatives can be efficiently and reliable synthesized, functionalized and deagglomerated using high-performance ultrasonication. Ultrasonic zeolite synthesis and treatment excels conventional hydrothermal synthesis by efficiency, simplicity, and simple linear scalability to large production. Ultrasonically synthesized zeolites…
https://www.hielscher.com/synthesis-and-functionalization-of-zeolites-using-sonication.htm
Biodiesel via Ultrasonically Improved (Trans-)Esterification
Biodiesel is synthesized via transesterification using a base-catalyst. However, if the raw material such as low-grade waste vegetable with a high free fatty acid content are used, a chemical pre-treatment step of esterification using an acid-catatlyst is required. Ultrasonication and…
https://www.hielscher.com/biodiesel-via-ultrasonically-improved-trans-esterification.htm
Ramp-up Slow and Insufficient Manufacturing Processes
Ultrasonication is a well-established process intensifying technique, which is used in many kinds of liquid applications such as homogenization, mixing, dispersing, wet-milling, emulsification as well as improving heterogeneous chemical reactions. If your production process is underperforming and does not achieve…
https://www.hielscher.com/ramp-up-slow-and-insufficient-manufacturing-processes.htm
Nano-Sized Magnesium Hydride as Efficient Hydrogen Storage
Sonication is applied to magnesium hydride in order to accelerate the hydrolysis of magnesium hydride to enhance hydrogen generation. Additionally, ultrasonically nanostructured magnesium hydride, i.e. MgH2 nanoparticles, show improved hydrogen storage capacity. Magnesium Hydride for Hydrogen Storage Magnesium hydride, MgH2,…
https://www.hielscher.com/magnesium-hydride-synthesis-via-hydrolysis.htm
Application of Power Ultrasound using Ultrasonic Horns
Ultrasonic horns or probes are used widely for manifold liquid processing applications including homogenization, dispersing, wet-milling, emulsification, extraction, disintegration, dissolving, and de-aeration. Learn the basics about ultrasonic horns, ultrasonic probes and their applications. Ultrasonic Horn vs Ultrasonic Probe Often, the…
https://www.hielscher.com/application-of-power-ultrasound-using-ultrasonic-horns.htm
Sonoelectrochemistry Setup – 2000 Watts Ultrasound
Sonoelectrochemistry combines the benefits of electrochemistry with sonochemistry. The biggest advantage in these techniques is their simplicity, low cost, reproducibility and scalability. Hielscher Ultrasonics offers complete sonoelectrochemical setup for batch and inline use. It consists of: an advanced ultrasonic generator…
https://www.hielscher.com/sonoelectrochemistry-setup-2000-watts-ultrasound.htm
Sono-Electrochemistry and its Advantages
Here you will find all you need to know about ultrasonic electrochemistry (sonoelectrochemistry): working principle, applications, advantages and sono-electrochemical equipment - all relevant information about sonoelectrochemistry on one page. Why Applying Ultrasonics to Electrochemistry? The combination of low-frequency, high-intensity ultrasound…
https://www.hielscher.com/sono-electrochemistry-and-its-advantages.htm