How does green chemistry manifest itself?

The most prominent is the light energy references, solar street lights on the street; there is also a focus on green fuel hydrogen references; and the development of nuclear energy references! Much better

Mainly focus on the following aspects:

1, the use of non-toxic, harmless raw materials: chemical research and chemical production is often used in toxic, harmful raw materials, such as highly toxic phosgene, hydrocyanic acid, benzene, aldehydes and other raw materials and intermediates, which seriously pollute the environment and jeopardize human health. The use of non-toxic, harmless raw materials is an important task of green chemistry.

2, the development and application of "atomic economy" reaction route: is to maximize the use of raw material molecules of each atom, so that the combination of the target molecules, without producing by-products or waste, so as to achieve zero emission of waste. The "atom economy" reaction is conducive to the conservation of resources and protection of the environment.

3. Adopting new, efficient, environmentally friendly and recyclable catalysts: Through the selection of catalysts, the selectivity of the reaction can be improved and the generation of by-products can be avoided, thus improving the utilization rate of the atoms and reducing the emission of hazardous substances into the environment.

4, the use of non-toxic, non-hazardous solvents: committed to the development of the reaction in the presence of solvent-free, such as solid-state reaction; the development and application of non-toxic, inexpensive, environmentally non-hazardous water-mediated system; supercritical fluid as a medium for the reaction will become an important way of green synthesis process.

5, the greening of products: the use of new processes, new raw materials, new formulations, the synthesis of new non-toxic, non-hazardous to mankind and the environment of green products is the ultimate mission and ultimate goal of green chemistry. Such as the development of new refrigerants to reduce the destruction of the ozone layer; the development of new, biodegradable polymer materials to solve the problem of "white pollution".

6, the full application of renewable resources: the use of renewable resources as chemical raw materials, is an important task of green chemistry and research direction. According to statistics, more than 95% of modern organic chemicals from oil and coal, but oil and coal reserves are limited, is a non-renewable energy. At the same time, the extraction and processing of oil and coal seriously pollute the environment. The use of renewable biomass, such as starch, cellulose, biogas, sugar, etc. to replace the traditional petroleum, coal and other industrial raw materials can protect resources and benefit the environment, can be said to be a double win.

7, from the product development pathway to consider: the development of traditional chemical processes is after a long experimental exploration, and continuous improvement, optimization and refinement. In this research mode, will certainly consume a large number of chemical reagents, solvents and energy, and a steady stream of by-products and waste. Often, the development of a viable chemical process takes a long time and consumes a great deal of human and material resources. At present, computer-aided molecular design and materials design is an emerging branch of science and has achieved extensive development and application in practice. Such as in organic synthesis and drug synthesis, scientists first establish a known organic synthesis reaction as full as possible database, and then after determining the target product, the first step to find out all the target products can be produced by the reaction; the second step of the raw materials for these reactions as intermediate target products to find out all the reaction routes can be produced by them; and then the application of computer intelligence to optimize the best reaction routes that are inexpensive, good quality and do not waste resources and do not pollute the environment. Then computer intelligence technology is applied to optimize the best reaction routes that are cheap, cost-effective, do not waste resources and do not pollute the environment; finally, the designed target molecules are synthesized by chemical methods. Green chemistry has played an increasingly significant role in saving raw materials, protecting the environment, and safeguarding human health and safety, and has received widespread attention from the society. Many scientific research institutions and government departments around the world are committed to the development and popularization of green chemistry. It is believed that with the progress of science and the improvement of people's green consciousness, the earth's environment on which we depend will become better.