Green house potential

They are non-toxic, have zero ozone depletion potential andhave significantly low green house potential. For these reasons, they are friendly to life and the environment and hence are useful in green chemistry. 

Carbon dioxide is a potential carbon resource abundant on earth. It is also a green house gas with a rapidly increasing atmospheric concentration during the last two centuries. Chemical fixation of CO2 is an attractive technique for utilization of carbon resources, as well as for the reduction of the atmospheric concentration of CO2. Nevertheless, CO2 is the stablest among carbon based substances under the enviromnental conditions. It has not been incorporated as a major industrial material. 

However, with the breaktlirough created for the sake of the two stroke engines in gasoline direct injection, notably by Siemens, or with air injection, (orbital or lAPAC) the 4 stroke lean bum engine is clearly a potential winner for tomorrow s green house engines. Already existing results evidence this forecast. 

Another interesting question that is raised regarding automotive catalytic converters is the formation of secondary emissions. In this study main emphasis was put on the nitrogen containing molecules NH3 and N2O, the latter of which becomes more and more important due to it s green house effect potential. First the NH3-formation is compared for the Pt/Rh- and the stabilized Pd-system, see Figure 5. 

Ecological data have been collected for all the products in this project as well as for all process steps required (see Table 13.1). First a life-cycle inventory was established for aU relevant ecological inputs. In a second step a data assessment was carried out aggregating individual data into 10 environmental categories such as anthropogenic green house effect, eutrophication potential, and the like (Fig. 13.21). 

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