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Author: Ants Tuulmets Publisher: Nova Science Publishers ISBN: 9781617611759 Category : Ionic solutions Languages : en Pages : 0
Book Description
Sonochemistry and solution chemistry have been explicitly brought together by analysing the effect of ultrasound on kinetics of ester hydrolysis and benzoin condensation, measured by the authors, and similar kinetic data for the solvolysis of tert-butyl chloride, compiled from literature. For the first time the power ultrasound, reaction kinetics and linear free-energy relationships were simultaneously exploited to study ionic reactions in water and aqueous-organic binary solvents and the importance of hydrophobic ground-state stabilisation of reagents in aqueous solutions was discussed. This book presents and discusses this approach, which has opened novel perspectives for wider understanding of the effect of sonication on chemical reactions in solution, as well as on solvation phenomena in general.
Author: Ants Tuulmets Publisher: Nova Science Publishers ISBN: 9781617611759 Category : Ionic solutions Languages : en Pages : 0
Book Description
Sonochemistry and solution chemistry have been explicitly brought together by analysing the effect of ultrasound on kinetics of ester hydrolysis and benzoin condensation, measured by the authors, and similar kinetic data for the solvolysis of tert-butyl chloride, compiled from literature. For the first time the power ultrasound, reaction kinetics and linear free-energy relationships were simultaneously exploited to study ionic reactions in water and aqueous-organic binary solvents and the importance of hydrophobic ground-state stabilisation of reagents in aqueous solutions was discussed. This book presents and discusses this approach, which has opened novel perspectives for wider understanding of the effect of sonication on chemical reactions in solution, as well as on solvation phenomena in general.
Author: Jean-Marc Lévêque Publisher: Springer ISBN: 331998554X Category : Science Languages : en Pages : 130
Book Description
This book provides informative, useful, and stimulating reading on the topic of organic sonochemistry – the core of ultrasound-based applications. Given the increasing interest in new and improved technologies, allied to their green and sustainable character (not always a valid premise), there is a great attraction for organic chemists to apply these protocols in synthesis and process chemistry. Unfortunately, as with other enabling technologies, many researchers new to the field have received a simple and dishonest message: just switch on! Therefore a significant portion of sonochemical syntheses lack reproducibility (surprisingly cavitation control and/or ultrasonic parameters are omitted) and the actual role of sonication remains uncertain. While this book does not provide a detailed description of fundamentals, the introductory remarks highlight the importance of cavitational effects and their experimental control. It presents a number of concepts of sonochemical reactivity and empirical rules with pertinent examples, often from classical and recent literature. It then focuses on scenarios of current interest where organic chemistry, and synthesis in particular, may benefit from sonication in terms of both chemical and mechanical activation. The “sustainable corner” of this field is largely exemplified through concepts like atom economy, renewable sources, wasteless syntheses, and benign solvents as reaction media. This book is useful for both researchers and graduate students, especially those familiar with the field of sonochemistry and applications of ultrasound in general. However, it is also of interest to a broader audience as it discusses the fundamentals, techniques, and experimental skills necessary for scientists wishing to initiate the use of ultrasound in their domain of expertise.
Author: Gregory Chatel Publisher: World Scientific Publishing Company ISBN: 1786341298 Category : Science Languages : en Pages : 187
Book Description
The application of ultrasound waves to chemical reactions — sonochemistry — has huge potential for innovation in eco-friendly and eco-efficient chemistry. Sonochemistry: New Opportunities for Green Chemistry first introduces the basics of ultrasonic waves and the history of sonochemistry before moving on to look at acoustic cavitation and the estimation of ultrasonic parameters. After this comes a discussion of the equipment needed for experimentation with sonochemistry. Finally there is an in-depth look at green sonochemistry in different fields of research, covering concepts such as new combinations of ultrasound with ionic liquids, microwave irradiation, enzyme combination, and sono-assisted electrochemistry. In conclusion, distinguished sonochemists from around the world share their opinions on the green sonochemistry, and their predictions in the field.Undergraduate and graduate students in chemistry, and practitioners of ultrasonic technology will gain a unique insight into the opportunities and challenges facing sonochemistry today in its theoretical and practical implementation.
Author: José-Luis Capelo-Martínez Publisher: John Wiley & Sons ISBN: 9783527319343 Category : Science Languages : en Pages : 180
Book Description
Mit Ultraschall kann man den Fortgang von Reaktionen verfolgen und Arbeitsschritte in der Analytik beschleunigen. Neben den klassischen Anwendungen in der Extraktion stellt dieser Band auch moderne Einsatzgebiete, unter anderem in der Proteomforschung und Polymertechnik, vor. Spezielle Kapitel widmen sich den erforderlichen Instrumenten wie Ultraschallbädern und -sonden.
Author: Felipe López-Saucedo Publisher: CRC Press ISBN: 1040117619 Category : Technology & Engineering Languages : en Pages : 253
Book Description
This book explores the most pertinent aspects and advancements in sonochemistry, dedicating nine chapters to fundamentals, synthesis methods, and applications. Covering ultrasound as the primary energy source, the initial chapters cover the interaction of ultrasound waves with matter and its diverse applications across various fields. The text further delves into the synthesis of nanomaterials and nanocomposites under varying reaction conditions. Finally, the book examines specific topics, including the application of sonochemistry in wastewater treatment, catalysts, sensors, meat processing, and food packaging. These insights indicate that sonochemistry is an emerging science with promising applications extending beyond the confines of the laboratory.
Author: Suresh C. Ameta Publisher: CRC Press ISBN: 1351592998 Category : Science Languages : en Pages : 355
Book Description
Traditionally heat and light are thought as energy sources to drive a particular chemical reaction, but now ultrasound is a promising energy source for this purpose. The collapse of a bubble generates a wide range of high temperatures and pressures, and therefore, use of ultrasound has a considerable potential in chemical and allied sciences. Ultrasound-assisted reactions are green and economically viable alternatives to conventional techniques. This new volume presents a complete picture of ultrasound-assisted reactions and technologies that can be used in organic synthesis, polymer synthesis and degradation, nanomaterials, wastewater treatment, food ingredients and products, pharmaceutical applications, bioenergy applications, and more. This volume aims to shed light on the diversified applications of ultrasound and its significant role as a green chemical pathway. Sonochemistry deals with the effect of ultrasonic waves on chemical systems. It has green value because of non-hazardous acoustic radiation and is therefore duly recognized as a green chemistry by synthetic chemists as well as environmentalists. There is no direct interaction of ultrasound with molecular species, but the observed chemical and physical effects of ultrasound are due to the cavitational collapse, which produces drastic conditions of temperature and pressure locally. It induces the formation of various chemical species, which cannot be easily attained under conventional conditions. Sometimes, these species are responsible for driving towards an unusual reactivity in molecular entities. This book, Sonochemistry: An Emerging Green Technology, provides the complete development of sonochemistry, starting with an introduction and basic concepts of sonochemistry and proceeding on to different types of sonochemical reactions, instrumentation, use of ultrasound in driving particular chemical reactions, and its applications in various fields, such as polymer synthesis, decontamination of water and wastewater, preparation of nanomaterials, food technology, pharmaceutical sciences, etc. The book also briefly discusses some areas that utilize ultrasounds of different frequencies. These include food products and their processing; anaerobic digestion of waste; and medical applications such as ultrasonography, sonodynamic therapy, drug delivery, etc. Sonochemistry will be successfully used on an industrial scale in pharmaceutical drugs, polymers, nanomaterials, food technology, material science, biogas production, etc. in years to come and will be an established green chemical technology of the future.
Author: T.J. Mason Publisher: Elsevier ISBN: 076230331X Category : Medical Languages : en Pages : 326
Book Description
This is the fifth volume of Advances in Sonochemistry the first having been published in 1990. The definition of sonochemistry has developed to include not only the ways in which ultrsound has been harnessed to effect chemistry but also its uses in material processing. Subjects included range from chemical dosimetry to ultrasound in microbiology to ultrasound in the extraction of plant materials and in leather technology.
Author: Jean-Louis Luche Publisher: Springer Science & Business Media ISBN: 0306459167 Category : Science Languages : en Pages : 460
Book Description
TEAN-LOUIS LUCHE A French poet of this eentury, Pierre Mae Orlan, wrote "Adventure does not exist, it is only in the mind of he who is pursuing it, and, as soon as it is at one's finger tips, it vanishes to come back to life, far away, in a different shape, at the frontiers of imagination". This sentence could be used to define the adventure that many sonochemists experienced. Most of them did not even suspect that the "laboratory trick" they were using was the first contact with a considerable amount of science. If a personal note is allowed here, it ean be interesting to mention the part played by chance in my involvement in sonochemistry. Almost 20 years ago, we had to perform an apparently simple Grignard reaetion with n-butylmagnesium bromide and geranial, but the results were repeatedly unsatisfactory. The one-pot Barbier technique was attempted, also without success. From my studies at the University, I imagined that the failure of the latter reaction could be caused by a common phenomenon known by solid state chemists as passivation, which in some cases can be overcome by ultrasonication. By chance, an ultrasonie bath was sitting on the next beneh, borrowed to clean some equipment. We clamped our reluctant reaction mixture into the bath, the reaction proceeded vigorously, and ... the adventure started. Without knowing anything about cavitation, high energies, ete., we had an illustration of Goethe's word "Am Anfang war die Tat" (at the Beginning was the Act).
Author: Jean-Louis Luche Publisher: Springer Science & Business Media ISBN: 1489919104 Category : Science Languages : en Pages : 447
Book Description
TEAN-LOUIS LUCHE A French poet of this eentury, Pierre Mae Orlan, wrote "Adventure does not exist, it is only in the mind of he who is pursuing it, and, as soon as it is at one's finger tips, it vanishes to come back to life, far away, in a different shape, at the frontiers of imagination". This sentence could be used to define the adventure that many sonochemists experienced. Most of them did not even suspect that the "laboratory trick" they were using was the first contact with a considerable amount of science. If a personal note is allowed here, it ean be interesting to mention the part played by chance in my involvement in sonochemistry. Almost 20 years ago, we had to perform an apparently simple Grignard reaetion with n-butylmagnesium bromide and geranial, but the results were repeatedly unsatisfactory. The one-pot Barbier technique was attempted, also without success. From my studies at the University, I imagined that the failure of the latter reaction could be caused by a common phenomenon known by solid state chemists as passivation, which in some cases can be overcome by ultrasonication. By chance, an ultrasonie bath was sitting on the next beneh, borrowed to clean some equipment. We clamped our reluctant reaction mixture into the bath, the reaction proceeded vigorously, and ... the adventure started. Without knowing anything about cavitation, high energies, ete., we had an illustration of Goethe's word "Am Anfang war die Tat" (at the Beginning was the Act).
Author: Ants Tuulmets
Author: Ants Tuulmets
Author: Jean-Marc Lévêque
Author: Gregory Chatel
Author: José-Luis Capelo-Martínez
Author: Felipe López-Saucedo
Author: Suresh C. Ameta
Author: T.J. Mason
Author: Ritu Singla
Author: Jean-Louis Luche
Author: Jean-Louis Luche