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2 produkter
2 produkter
Integrated Chemical Processes in Liquid Multiphase Systems
From Chemical Reaction to Process Design and Operation
Inbunden, Engelska, 2022
2 086 kr
Skickas inom 5-8 vardagar
Liquid multiphase processes represent a promising option for realizing novel, efficient, and sustainable production processes, as required for the transformation towards climate-neutral manufacturing processes. This volume presents the results obtained over twelve years in the DFG-funded collaborative project Transregio 63 “Integrated Chemical Processes in Liquid Multiphase Systems”. In an interdisciplinary approach to the design and operation of such processes, essential principles of Green Chemistry are realized, such as using long-chain olefins as model representatives of renewable raw materials, highly effi cient catalysts, and green solvents, linked with process optimization to improve energy and material efficiency. Experts from different fields addressed all steps of the development process, from the description of the reactions on the molecular level via thermodynamics and the design of efficient separation processes to the operation of entire miniplants for liquid multiphase production processes. Thus, the complete development chain from the first reaction-related investigations in the laboratory to the technological realization in miniplants with model-based control is demonstrated. Numerous methodological innovations are proposed and validated using several innovative phase systems (thermomorphic multiphase systems, microemulsion systems, Pickering emulsions) and homogeneously catalyzed reactions. Engineers and chemists from the chemical industry as well as advanced students and researchers will get valuable insights into the physico-chemical phenomena in chemical multiphase processes and benefit from recommendations concerning methods for the selection of phase systems and rapid model-based process development.
Reactions in Compartmentalized Liquids
Proceedings of a Symposium held at the Zentrum für interdisziplinäre Forschung, Bielefeld/ FRG, September 11.–14, 1988
Häftad, Engelska, 1989
1 081 kr
Skickas inom 10-15 vardagar
At the annual meetings ofthe "Fast Reactions in Solution Discussion Group" of the Royal Society of Chemistry, an increasing number of contributions is concerned with reactions in complex liquids, where the solvents cannot be regarded as homogeneous media but where their microstructure has to be taken into account. In order to summarize the different aspects of those solvents, the 1988 meeting of the group has been held as a symposium devoted to "Compartmentalized Liquids". The contributions concerned different fields of science from mathematics, physics, and chemistry to food research and pharmacy. Thus it was appropriate to organize the meeting afthe Zentrum fUr interdiszipliniire Forschung at Bielefeld. Envisaging compartmentalized liquids on a scale descending size, we may order the systems described in this volume from colloidal solutions, gels, hydro col loids, membranes, vesicles, microemulsions, micellar solutions, macrocyclic complexes to "cages" involved in bimolecular encounter. In recent years many experimental and theoretical studies have been performed on those systems, and they are also of growing interest for technical applications. Two important reasons for the investigation of compartmentalized liquids as reaction media are: i) they are suited for performing reactions between water-soluble and oil-soluble reactants, ii) they provide large internal interfaces, where reactions may be catalyzed. Due to the large interfaces, the diffusion of molecules is restricted, and for the theoretical treatment of reaction rates in these systems the concept offractal geometry seems to be appropriate. Therefore contribu tions concerning fractals are included in this volume.