绿色化学课件-第二章.ppt

Chapter 2 Green Chemistry 2.1 The concept of Green Chemistry 2.2 Promoting the development of Green Chemistry 2.3 Atom Economy of chemistry reaction 2.4 Atom Economy and environmental effects 2.5 Research area of green chemistry 2.1 The concept of Green Chemistry Noyori: Importance of Green Chemistry 1. The connotation(内涵) of Green Chemistry Green chemistry is an active intercrossingresearch area in the world, it deals with the frontier of chemical research. The traditional ways of environmental protection just bring us about temporarysolutions for environmental problems while Green Chemistry provides permanent cures. Green Chemistry provides ways to reduce or eliminateenvironmental pollution from the beginning, which could have eternal benefits. The principles of Green Chemistry could and should be used to all domain of chemistry and chemical engineering. No pollution should be accompanied in chemical processes, this is to say, eliminate the potential of pollution before it occurs. The realization of this goal means no environmental control is needed, because there will be no pollution. Green Chemistry is the utilization of a set of principles to reduce or eliminate the use of hazardous materials in the design, manufacture and use of chemicals, and these chemicals themselves should be economically and environmentally benign. Green Chemistry is the application of chemical principles, chemical technologies and chemical methods to reduce or eliminate the use of hazardous starting materials, hazardous processes, hazardous target products, hazardous auxiliary substances (such as solvents, separation agents) in the production and use of chemicals. Hazardous or potentially hazardous processes should also be reduced or eliminated. By-products are expected to be avoided as thoroughly as possible and the starting materials be utilized as completely as possible thus satisfying a sustainable civilization. Environment resourc