Some chemical CO₂ solvents are designed for CO₂ capture under relatively high pressure conditions from large-scale sources, including coal gasification gases prior to combustion (Pre Combustion Capture) or extracted natural gases.
 

As an additional outcome of our research and development of highly energy-efficient liquid CO₂ solvents, we have identified chemical CO₂ solvents with excellent CO₂ absorption and desorption performances under high pressure conditions. Currently, we are developing CO₂ capture processes capable of operating under high pressure conditions with improved performance. These newly developed solvents exhibit high CO₂ recoveries and high CO₂ absorption and desorption rates with low levels of CO₂ absorption heats under high pressure conditions, and thus should allow CO₂ capture with significantly reduced energy consumption. Using these newer solvents, the total energy required for CO₂ capture, including an associated compression process, has been estimated to be less than 1.2 GJ/t-CO₂.