Setting the foundations for a highly selective fractional crystallization scheme to capture carbon dioxide from coal-fired boiler emissions

在这个应用程序中，我建议奠定理论和实验基础，最终将导致一种成本更低的技术，从燃煤发电厂的燃烧前或燃烧后气流中去除二氧化碳。半包合物是一种晶体材料，当气体（如CO2）与盐（如四正丁基溴化铵（TBAB））的水溶液在适当的温度和压力条件下接触时形成。半包合物与天然气水合物有许多相似之处。像天然气水合物一样，半包合物提供了一个水分子的分子笼，能够选择性地捕获二氧化碳等分子。然而，在给定温度下，在TBAB水溶液中形成的半笼合物的压力要比天然气水合物低得多。

In this application, I am proposing to lay the theoretical and experimental foundations that will eventually lead to a less costly technique to remove CO2 from either the pre- or post-combustion gas stream of a coal-fired power plant. Semi-clathrates are a crystalline material that form when gases such as CO2 are contacted with an aqueous solution of a salt such as Tetra-n-butyl ammonium bromide (TBAB) under the appropriate set of temperature and pressure conditions. Semi-clathrates have many similarities to gas-hydrates. Like gas hydrates, semi-clathrates provide a molecular cage of water molecules that are capable of selectively trapping molecules such as CO2. However, semi-clathrates formed in aqueous solutions of TBAB form at substantially lower pressures, at a given temperature, than gas-hydrates.