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 65 hits. Showing results 13 - 24.
Optimized Chemical Reactor Efficiency by High-Power Ultrasonication
Ultrasonication is well known to intensify and/or initiate chemical reactions. Therefore, the integration of high-performance ultrasound is considered as reliable tool to promote chemical reactors for improved reaction outcomes. Hielscher Ultrasonics offers various reactor solutions to tweak your chemical process.…
https://www.hielscher.com/optimized-chemical-reactor-efficiency-by-high-power-ultrasonication.htm
Organocatalytic Reactions Promoted by Sonication
In organic chemistry, organocatalysis is a form of catalysis in which the rate of a chemical reaction is increased by an organic catalyst. This "organocatalyst" consists of carbon, hydrogen, sulfur and other nonmetal elements found in organic compounds. The application…
https://www.hielscher.com/organocatalytic-reactions-promoted-by-sonication.htm
Ultrasonically Promoted Michael Addition Reaction
Asymmetric Michael reactions are a type of organocatalytic reactions, which can benefit heavily from sonication. The Michael reaction or Michael addition is widely used for chemical syntheses, where carbon-carbon bonds are formed under mild conditions. Ultrasonication and its sonochemical effects…
https://www.hielscher.com/ultrasonically-promoted-michael-addition-reaction.htm
Sonochemically Improved Diels-Alder Reactions
Diels-Alder reactions are widely used for chemical syntheses, where atomic carbon-carbon bonds must be formed. Ultrasonication and its sonochemical effects are highly efficacious in driving and promoting Diels-Alder reactions resulting in higher yields, significantly reduced reaction time and at the…
https://www.hielscher.com/sonochemically-improved-diels-alder-reactions.htm
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