Green chemical process

THE CATALYTIC REACTION ENGINEERING TOWARD GREEN CHEMICAL PROCESSES PROJECT IN JAPAN... 

Design of catalytic reaction fields toward green chemical processes... 

GCES allows users to build a green chemical process, design a green chemical, or survey the field of green chemistry. The system is equally useful for new and existing chemicals and their synthetic processes. The GCES features are contained in five modules ... 

From the studies covered in this chapter, it can be concluded that a completely green chemical process in the synthesis of this kind of material is still a challenge. Some protocols, despite using non-toxic precursors, are time- and/or energy-consuming processes or require the use of non-friendly and non-recyclable solvents. Reaction times in microwave-assisted reaction processes have shown to be shorter. On the other hand, the substitution of conventional solvents for chemical and thermally stable I Ls allowed the reutilization of the solvent and also provided control of the size and shape of NPs. 

Table 6.2. Steps for evaluation and execution of green chemical processes.

The next milestone came with the description of the condensation reactions between 1,3- dicarbonyl compounds and alcohols, amines or thiol derivatives. This reaction was a great success in the search for simplicity as an efficient tool for green chemical processes, thanks to the reduction of the number of synthetic steps and... 

A sustainable chemical industry is characterized by green chemical processes, where all of the above concerns are taken into account, or where there is a total recycling of intrinsically toxic or hazardous materials and substances, and an almost total recycling of other nonhazardous materials (e.g., water, plastic, or metals) that may constitute an environmental problem through resource depletion and pollution, as well as additional energy consumption. 

Xiang, J. Toyoshima, S. Orita, A. Otera, J. A Practical and Green Chemical Process Fluoroalkyldistannoxane-catalyzed Biphasic Trans-esterification, Angew. Chem., Int. Ed., 2001, 40, 3670-3672. 

Enzyme-catalyzed reactions based on such biphasic systems have been shown to be promising alternatives for developing green chemical processes because of their physical and chemical characteristics [9]. By combining these media with enzymes, the possibilities of carrying out integral green biocatalytic processes has been already demonstrated [10-12]. Such biphasic systems can be used for both the biotransformation and extraction of products simultaneously, even under extremely harsh conditions, because of the different miscibilities of ILs and SC-CO2. 

The outlook of syntheses, based on using SC-CO2 or appropriate IL/SC-CO2 biphasic system for developing integral green chemical processes due to the physical and chemical characterishcs of these neoteric solvents and the enhanced enzyme catalytic properties seems promising. 

A.G. Livingston, L. Peeva, S. Han, D.A. Nair, S.S. Luthra, L.S. White, L.M. Freitas dos Santos, Membrane separation in green chemical processing - solvent nanofiltration in liquid phase organic synthesis reactions, Ann. N.Y. Acad. Sci., 984 (2003) 123-141. 

Phase-transfer catalysis is one of the most practical synthetic methodologies because of its operational simplicity and mild reaction conditions, which enable applications in industrial syntheses as a sustainable green chemical process. As reviewed in this chapter, diverse Cinchona alkaloid-derived quaternaiy ammonium salts have been developed via the modification of Cinchona alkaloids based on steric or electronic factors as highly efficient chiral PTC catalysts and successfully applied in various asymmetric organic reactions. Despite the successful development and application of these catalysts, some problems remain to be addressed. Although Cinchona alkaloids have unique structural features, resulting in the availability of four... 

Kralisch D, Ott D, Gericke D. Rules and benefits of life cycle assessment in green chemical process and synthesis design a tutorial review. Green Chem 2015 17(1) 123—45. 

As editors of this book, we sincerely hope it can serve as a starting point to highlight the importance of industrial biotechnology and green chemical processes and technologies in biorefineries for the benefit of humankind. 

Over the past several years, a number of different strategies have been investigated to perform olefin metathesis reactions in media other than traditional organic solvents. These efforts are related to sustainability, with a focus toward the development of green chemical processes as described in the introduction... 

McKenzie, L. C., Thompson, J. E., Sullivan, R., and Hutchison, J. E. Green Chemical Processing in the Teaching Laboratory A Convenient Liquid COj Extraction of Natural Products. Green Chemistry, 6 (2004) 355-358. 

Da Silva LM, Santana MHP, Boodts JFC (2003) Electrochemistry and green chemical processes electrochemical ozone production. Quim Nova 26 880-888... 

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