Chemical Processes and Use of CO2

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Chemical Processes and Use of CO2 ( chemical-processes-and-use-co2 )

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DREAM REACTION FUNDED PROJECTS 1.2.2 Project description The goal is to develop innovative and sustainable chemical processes that exhibit a high CO2 fixation potential, high energy efficiency and high selec- tivity, and that also avoid or minimise waste generation. These novel pro- cesses will require the development of a new generation of catalysts that enable the production of monomeric and polymeric carbonates using car- bon dioxide as a C1 synthetic building block (see Figure 7). The catalysts to be developed will activate the relatively inert CO2 so that it can be utilised as a valuable feedstock for synthesising carbonates. Another approach that will be explored involves building up the carbonate unit from carbon monoxide (CO) and oxygen. Both reactions can be considered to be dream reactions – hence the name of the project. Up until now, alternative CO/CO2-based processes have not been economically viable compared with the established phosgene-based production processes, but new catalysts and new synthetic strategies could well make the development of cost-effective and environ- mentally friendly processes a realistic option. The technical complexity of the traditional synthetic route involving phos- gene is just one of the drivers behind the development of the alternative processes presented here. The dream reaction being targeted in this pro- ject involves the fixation of CO2 and the potential to save energy in the Fig. 7: Carbon dioxide (CO2) as a C1 building block in the synthesis of polyether polycarbonate polyols (PPP), which are used as intermediates in the manufacture of soft polyurethane foams, and of diphenyl carbonate, which is used in the manufacture of polycarbonates. Project part 1: Project part 2: Production of soft polyurethane foams Production of polycarbonates 33

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